AT&T PARADYNE ============= COMSPHERE 3820PLUS Modem Type Data (synchronous/asynchronous) Maximum Data Rate 28.8Kbps Data Bus External Data Modulation AT&T V.32terbo, V.34, Point to Point Protocol diagnostic, Trellis Multipoint Bell 103A/212A ITU-T V.21, V.22, V.22bis, V23, V.27bis, V.27ter, V.29, V.32, V.33, V.32bis, V.34 Error MNP5, V.42, V.42bis Correction/Compression +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------------+----------+---------------+----------| | Switched line | CN1 | Power switch | SW1 | |----------------------+----------+---------------+----------| | Leased line | CN2 | Scroll left | CN6 | |----------------------+----------+---------------+----------| | RS-232/422 | CN3 | Scroll right | CN7 | |----------------------+----------+---------------+----------| | DC power | CN4 | Go up one | CN8 | | | | level | | |----------------------+----------+---------------+----------| | Network Management | CN5 | Go to top | CN9 | | (proprietary) | | level | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAGNOSTIC LED(S) | |------------------------------------------------------------| | LED | Color | Status | Condition | |----------+--------+----------+-----------------------------| | PWR | Green | On | Power is on | |----------+--------+----------+-----------------------------| | PWR | Green | Off | Power is off | |----------+--------+----------+-----------------------------| | ALRM | Red | Blinking | Major alarm detected in a | | | | | remote 392x series modem | |----------+--------+----------+-----------------------------| | ALRM | Red | Off | Normal operation | |----------+--------+----------+-----------------------------| | DIAG | Green | On | Modem is receiving | | | | | diagnostic messages | |----------+--------+----------+-----------------------------| | DIAG | Green | Off | Modem is not receiving | | | | | diagnostic messages | |----------+--------+----------+-----------------------------| | DTR/108 | Green | On | DTR signal is high | |----------+--------+----------+-----------------------------| | DTR/108 | Green | Off | DTR signal is low | |----------+--------+----------+-----------------------------| | RTS/105 | Green | On | RTS signal is high | |----------+--------+----------+-----------------------------| | RTS/105 | Green | Off | RTS signal is low | |----------+--------+----------+-----------------------------| | CTS/106 | Green | On | CTS signal is high | |----------+--------+----------+-----------------------------| | CTS/106 | Green | Off | CTS signal is low | |----------+--------+----------+-----------------------------| | TXD/103 | Green | On | Modem is receiving data | | | | | from DTE | |----------+--------+----------+-----------------------------| | TXD/103 | Green | Off | Modem is not receiving data | | | | | from DTE | |----------+--------+----------+-----------------------------| | LSD/109 | Green | On | Carrier signal detected | |----------+--------+----------+-----------------------------| | LSD/109 | Green | Off | Carrier signal not detected | |----------+--------+----------+-----------------------------| | RXD/104 | Green | On | Modem is transmitting data | | | | | to DTE | |----------+--------+----------+-----------------------------| | RXD/104 | Green | Off | Modem is not transmitting | | | | | data to DTE | |----------+--------+----------+-----------------------------| | SQ | Yellow | Blinking | Line signal is degraded or | | | | | data path is being blocked | |----------+--------+----------+-----------------------------| | SQ | Yellow | Off | Normal operation | |----------+--------+----------+-----------------------------| | TEST/142 | Yellow | On | Test connection established | |----------+--------+----------+-----------------------------| | TEST/142 | Yellow | Blinking | Modem is upgrading firmware | |----------+--------+----------+-----------------------------| | TEST/142 | Yellow | Off | No test connection | | | | | established | |----------+--------+----------+-----------------------------| | RATE | Yellow | On | Modem is connected at less | | | | | than configured speed | |----------+--------+----------+-----------------------------| | RATE | Yellow | Off | Modem is connected at | | | | | configured speed | |----------+--------+----------+-----------------------------| | DIAL | Yellow | On | Modem is establishing a | | | | | switched line connection | |----------+--------+----------+-----------------------------| | DIAL | Yellow | Blinking | Switched line connection | | | | | established | |----------+--------+----------+-----------------------------| | DIAL | Yellow | Off | No switched line connection | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | ANTISTREAMING | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S72=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S72=0 &W | |--------------+---------------------------------------------| | Description: | Selects antistreaming option | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i 72=0 | Disabled | |--------------+---------------------------------------------| | i S72=1 | 10 seconds | |--------------+---------------------------------------------| | i S72=2 | 30 seconds | |--------------+---------------------------------------------| | i S72=3 | 1 minute | |--------------+---------------------------------------------| | i S72=4 | 2 minutes | |--------------+---------------------------------------------| | i S72=5 | 3 minutes | |--------------+---------------------------------------------| | i S72=6 | 5 minutes | +------------------------------------------------------------+ +------------------------------------------------------------+ | AT COMMAND RESPONSE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S84=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S84=0 &W | |--------------+---------------------------------------------| | Description: | Sets the response to AT commands. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S84=0 | Normal operation | |--------------+---------------------------------------------| | i S84=1 | Execute valid commands, suppress error | | | codes. | |--------------+---------------------------------------------| | i S84=2 | Ignore configuration commands, always | | | return OK error code. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO BAUD | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S78=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S78=0 &W | |--------------+---------------------------------------------| | Description: | Allows modem to connect at remote modem's | | | modulation. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S78=0 | Auto baud enabled. | |--------------+---------------------------------------------| | i S78=1 | Auto baud disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE FALLBACK CHARACTER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %An [cmds] | |--------------+---------------------------------------------| | Example: | AT%A20 | |--------------+---------------------------------------------| | Default: | 15 | |--------------+---------------------------------------------| | Range: | 0-127 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used as the | | | auto-reliable fallback character. %A0 will | | | disable this function. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE TIME BUFFER CONFIGURATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Cn [cmds] | |--------------+---------------------------------------------| | Example: | AT \C1 &W | |--------------+---------------------------------------------| | Description: | Controls the handling of incoming data | | | during auto-reliable time period. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \CO | Data is discarded. | |--------------+---------------------------------------------| | i \C1 | Data is buffered. | |--------------+---------------------------------------------| | i \C2 | Data is discarded, resets to \C1 on receipt | | | of autoreliable fallback character. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT \K5 &W | |--------------+---------------------------------------------| | Description: | Selects response to DTE break command. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \K0 | Send break, clear buffer, enter command | | | mode. | |--------------+---------------------------------------------| | i \K1 | Send break, clear buffer | |--------------+---------------------------------------------| | i \K2 | Send break, send data, enter command mode. | |--------------+---------------------------------------------| | i \K3 | Send break. send data, | |--------------+---------------------------------------------| | i \K4 | Send data, send break, enter command mode. | |--------------+---------------------------------------------| | i \K5 | Send data, send break. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BUFFER REDUCED ASYNCRONOUS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S97=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S97=0 &W | |--------------+---------------------------------------------| | Description: | Limits asynchronous buffer size to a 20 | | | character maximum | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S97=0 | Buffer size limit disabled. | |--------------+---------------------------------------------| | i S97=1 | Buffer size limit enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | BUSY OUT ON LOW DTR | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S69=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S69=0 &W | |--------------+---------------------------------------------| | Description: | Modem goes off hook on low DTR (use only in | | | PBX mode). | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S69=0 | Busy out disabled. | |--------------+---------------------------------------------| | i S69=1 | Busy out enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CALLBACK SECURITY | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S67=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S67=0 &W | |--------------+---------------------------------------------| | Description: | Enables callback security option | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S67=0 | Disabled | |--------------+---------------------------------------------| | i S67=1 | Enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | CD SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Cn [cmds] | |--------------+---------------------------------------------| | Example: | AT &C3 I4 | |--------------+---------------------------------------------| | Description: | Configures the behavior of the carrier | | | detect signal. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &C0 | CD forced high. | |--------------+---------------------------------------------| | i &C1 | CD normal. | |--------------+---------------------------------------------| | i &C2 | CD forced high except during handshaking | | | and disconnecting. | |--------------+---------------------------------------------| | i &C3 | CD follows DTR | |--------------+---------------------------------------------| | i &C4 | CD follows remote RTS signal. | |--------------+---------------------------------------------| | i &C5 | CD Follows DTR signal. Forced low on | | | disconnect. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CELLULAR ENHANCEMENTS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S91=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S91=0 &W | |--------------+---------------------------------------------| | Description: | Configures modem to enhanced cellular mode | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S91=0 | Disabled | |--------------+---------------------------------------------| | i S91=1 | Enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %Cn | |--------------+---------------------------------------------| | Example: | AT I2 %C1 L3 | |--------------+---------------------------------------------| | Description: | Selects data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled. | |--------------+---------------------------------------------| | %C1 | Data compression enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CTS SIGNAL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Dn [cmds] | |--------------+---------------------------------------------| | Example: | AT \D0 | |--------------+---------------------------------------------| | Description: | Selects the function of the CTS signal. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \D0 | CTS forced high. | |--------------+---------------------------------------------| | i \D1 | CTS normal. | |--------------+---------------------------------------------| | i \D2 | CTS interrupted for 2 seconds on | | | disconnect. | |--------------+---------------------------------------------| | i \D3 | CTS follows DTR. | |--------------+---------------------------------------------| | i \D4 | CTS follows RTS | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISCONNECT BUFFER DELAY | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S49=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S49=0 | |--------------+---------------------------------------------| | Default: | 10 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Selects how long the modem will continue to | | | transmit data in transmit buffer after | | | receipt of disconnect signal | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISCONNECT IMMEDIATELY | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S85=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S85=0 &W | |--------------+---------------------------------------------| | Description: | Disconnect immediately on receipt of | | | disconnect signal from DTE or diagnostic | | | control panel. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S85=0 | Disabled. | |--------------+---------------------------------------------| | i S85=1 | Enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISCONNECT ON LOSS OF CURRENT | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S65=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S65=0 | |--------------+---------------------------------------------| | Description: | Causes the modem to disconnect if the | | | telephone line's current drops. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S65=0 | Disconnect after 8ms if current is lost. | |--------------+---------------------------------------------| | i S65=1 | Disconnect after 90ms if current is lost. | |--------------+---------------------------------------------| | i S65=2 | Disabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | DTE RATE CONTROL | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S61=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S61=0 &W | |--------------+---------------------------------------------| | Description: | Sets result of DTE CT111 rate control | | | signal. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S61=0 | Disabled. | |--------------+---------------------------------------------| | i S61=1 | Fallback 1. | |--------------+---------------------------------------------| | i S61=2 | Fallback 2. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Example: | AT \G1 &K3 | |--------------+---------------------------------------------| | Description: | Selects modem port flow control. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \G0 | Flow control disabled. | |--------------+---------------------------------------------| | i \G1 | Flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Qn [cmds] | |--------------+---------------------------------------------| | Example: | AT \Q5 | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \Q0 | Flow control disabled. | |--------------+---------------------------------------------| | i \Q1 | Bidirectional XON/XOFF flow control | | | enabled. | |--------------+---------------------------------------------| | I \Q2 | CTS flow control by DCE enabled. | |--------------+---------------------------------------------| | i \Q3 | Bidirectional CTS/RTS flow control enabled. | |--------------+---------------------------------------------| | i \Q4 | XON/XOFF flow control by DTE enabled. | |--------------+---------------------------------------------| | i \Q5 | XON/XOFF flow control by DCE enabled. | |--------------+---------------------------------------------| | i \Q6 | RTS flow control by DTE enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Tn [cmds] | |--------------+---------------------------------------------| | Example: | AT\T20 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the length of time that the modem does | | | not receive information before it | | | disconnects. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LAP-M FRAME SIZE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Example: | AT \A3 %C1 | |--------------+---------------------------------------------| | Description: | Sets the maximum frame size for V.42 and | | | MNP connections. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \A0 | Maximum frame size is 64 | |--------------+---------------------------------------------| | i \A1 | Maximum frame size is 128 | |--------------+---------------------------------------------| | i \A2 | Maximum frame size is 192 | |--------------+---------------------------------------------| | i \A3 | Maximum frame size is 256 | |--------------+---------------------------------------------| | i \A4 | Maximum frame size is 32 | |--------------+---------------------------------------------| | i \A5 | Maximum frame size is 16 | +------------------------------------------------------------+ +------------------------------------------------------------+ | LAP-M FRAME WINDOW | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S89=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS89=6 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 1-9 | |--------------+---------------------------------------------| | Unit: | 1 frame (beginning with 0=6 frames) | |--------------+---------------------------------------------| | Description: | Sets the number of frames used in V.42 and | | | V.42bis transmissions | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE AUTO-RETRAIN | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S82=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S82=0 &W | |--------------+---------------------------------------------| | Description: | Allows modem to retrain to compensate for | | | bad line quality in V.32bis or V.32terbo | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S82=0 | Retrain enabled. | |--------------+---------------------------------------------| | i S82=1 | Retrain disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE BACKUP SPECIAL STANDBY | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S98=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S98=0 &W | |--------------+---------------------------------------------| | Description: | Allows leased line dial backup using a | | | third modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S98=0 | Disabled | |--------------+---------------------------------------------| | i S98=1 | Enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE DIAL BACKUP | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S46=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S46=0 &F1 | |--------------+---------------------------------------------| | Description: | Automatically establishes switched line | | | connection if leased line fails | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i S46=0 | Disabled. | |--------------+---------------------------------------------| | i S46=1 | Enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE BACKUP RECOVERY DELAY | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] S47=n &F1 [cmds] | |--------------+---------------------------------------------| | Example: | AT S47=0 &F1 | |--------------+---------------------------------------------| | Description: | After leased line failure, modem attempts | | | to reconnect after specified delay. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S46=0 | Disabled. | |--------------+---------------------------------------------| | i S46=1 | 15 minute delay. | |--------------+---------------------------------------------| | i S46=2 | 60 minute delay. | |--------------+---------------------------------------------| | i S46=3 | 4 hour delay | |--------------+---------------------------------------------| | i S46=4 | 2 minute delay (test) | |--------------+---------------------------------------------| | i S46=6 | Adv 30 minutes | |--------------+---------------------------------------------| | i S46=5 | Adv 15 minutes | |--------------+---------------------------------------------| | i S46=7 | Adv 60 minutes | |--------------+---------------------------------------------| | i S46=8 | Adv 2 minutes (test) | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE DISCONNECT LEVEL | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S48=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S48=0 &W | |--------------+---------------------------------------------| | Description: | Sets level carrier signal drops to before | | | disconnect. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S48=0 | Disconnect at -43dBm | |--------------+---------------------------------------------| | i S48=1 | Disconnect at -26dBm | |--------------+---------------------------------------------| | i S48=2 | Disconnect at -33dBm | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE SPEED | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S44=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS44=6 | |--------------+---------------------------------------------| | Default: | 27 | |--------------+---------------------------------------------| | Description: | Sets maximum leased line speed | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i S44=1 | 14.4Kbps V.32bis | |--------------+---------------------------------------------| | i S44=2 | 12.0Kbps V.32bis | |--------------+---------------------------------------------| | i S44=3 | 9600bps V.32 | |--------------+---------------------------------------------| | i S44=4 | 7200bps V.32bis | |--------------+---------------------------------------------| | i S44=5 | 4800bps V.32 | |--------------+---------------------------------------------| | i S44=6 | 2400bps V.22bis | |--------------+---------------------------------------------| | i S44=11 | 14.4Kbps V.33 | |--------------+---------------------------------------------| | i S44=12 | 12.0KbpsV.33 | |--------------+---------------------------------------------| | i S44=13 | 9600bps V.29 | |--------------+---------------------------------------------| | i S44=14 | 7200bps V.29 | |--------------+---------------------------------------------| | i S44=15 | 4800bps V.29 | |--------------+---------------------------------------------| | i S44=16 | 4800bps V.27bis | |--------------+---------------------------------------------| | i S44=17 | 2400bps V.27bis | |--------------+---------------------------------------------| | i S44=18 | 19.2Kbps V.32terbo | |--------------+---------------------------------------------| | i S44=19 | 16.8Kbps V.32terbo | |--------------+---------------------------------------------| | i S44=20 | 19.2Kbps TMp | |--------------+---------------------------------------------| | i S44=21 | 14.4Kbps TMp | |--------------+---------------------------------------------| | i S44=22 | 9600bps TMp | |--------------+---------------------------------------------| | i S44=23 | 7200bps TMp | |--------------+---------------------------------------------| | i S44=24 | 4800bps TMp | |--------------+---------------------------------------------| | i S44=25 | 2400bps TMp | |--------------+---------------------------------------------| | i S44=26 | 33.6Kbps | |--------------+---------------------------------------------| | i S44=27 | 31.2Kbps | |--------------+---------------------------------------------| | i S44=28 | 28.8Kbps V.34 | |--------------+---------------------------------------------| | i S44=29 | 26.4Kbps V.34 | |--------------+---------------------------------------------| | i S44=30 | 24.0Kbps V.34 | |--------------+---------------------------------------------| | i S44=31 | 21.6Kbps V.34 | |--------------+---------------------------------------------| | i S44=32 | 19.2Kbps V.34 | |--------------+---------------------------------------------| | i S44=33 | 16.8Kbps V.34 | |--------------+---------------------------------------------| | i S44=34 | 14.4Kbps V.34 | |--------------+---------------------------------------------| | i S44=35 | 12.0Kbps V.34 | |--------------+---------------------------------------------| | i S44=36 | 9600bps V.34 | |--------------+---------------------------------------------| | i S44=37 | 7200bps V.34 | |--------------+---------------------------------------------| | i S44=38 | 4800bps V.34 | |--------------+---------------------------------------------| | i S44=39 | 2400bps V.34 | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S45=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S45=15 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 15 | |--------------+---------------------------------------------| | Unit: | -1 dBm | |--------------+---------------------------------------------| | Description: | Sets the signal level for transmission when | | | in leased line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LINE TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &Ln [cmds] | |--------------+---------------------------------------------| | Example: | AT &L0 H1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Selects line type. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i &L0 | Switched line. | |--------------+---------------------------------------------| | i &L1 | 2-wire originate mode leased line. | |--------------+---------------------------------------------| | i &L2 | 4-wire originate mode leased line. | |--------------+---------------------------------------------| | i &L3 | 2-wire answer mode leased line. | |--------------+---------------------------------------------| | i &L4 | 4-wire answer mode leased line. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCAL ANALOG LOOPBACK | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S52=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S52=0 &W | |--------------+---------------------------------------------| | Description: | Modem executes local analog loopback on | | | receipt of CT141 signal from DTE | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S52=0 | Loopback disabled. | |--------------+---------------------------------------------| | i S52=1 | Loopback enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S90=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S90=0 | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S90=0 | Disabled. | |--------------+---------------------------------------------| | i S90=1 | Serial speed follows connect speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | NETWORK POSITION IDENTIFICATION | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S74=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S74=0 &W | |--------------+---------------------------------------------| | Description: | Identifies modem as either tributary or | | | control | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S74=0 | Identify as tributary | |--------------+---------------------------------------------| | i S74=1 | Identify as control | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.27bis TRAIN TIME | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S70=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S70=0 &W | |--------------+---------------------------------------------| | Description: | Selects length of V.27bis train time. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S70=0 | Short | |--------------+---------------------------------------------| | i S70=1 | Long | +------------------------------------------------------------+ +------------------------------------------------------------+ | PASSWORD REMOTE ACCESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S56=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS56=06 | |--------------+---------------------------------------------| | Default: | None | |--------------+---------------------------------------------| | Range: | 00-99 | |--------------+---------------------------------------------| | Unit: | Password digits | |--------------+---------------------------------------------| | Description: | Allows entry of the first two digits of | | | remote access password. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PASSWORD REMOTE ACCESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S57=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS57=06 | |--------------+---------------------------------------------| | Default: | None | |--------------+---------------------------------------------| | Range: | 00-99 | |--------------+---------------------------------------------| | Unit: | Password digits | |--------------+---------------------------------------------| | Description: | Allows entry of the second two digits of | | | remote access password. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PASSWORD REMOTE ACCESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S58=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS58=06 | |--------------+---------------------------------------------| | Default: | None | |--------------+---------------------------------------------| | Range: | 00-99 | |--------------+---------------------------------------------| | Unit: | Password digits | |--------------+---------------------------------------------| | Description: | Allows entry of the third two digits of | | | remote access password. | +------------------------------------------------------------+ +------------------------------------------------------------+ | PASSWORD REMOTE ACCESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S59=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS59=06 | |--------------+---------------------------------------------| | Default: | None | |--------------+---------------------------------------------| | Range: | 00-99 | |--------------+---------------------------------------------| | Unit: | Password digits | |--------------+---------------------------------------------| | Description: | Allows entry of the fourth two digits of | | | remote access password. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REMOTE CONFIGURATION | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S55=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S55=0 &W | |--------------+---------------------------------------------| | Description: | Allows remote configuration by 3800 series | | | modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S55=0 | Remote configuration enabled. | |--------------+---------------------------------------------| | i S55=1 | Remote configuration disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REMOTE DIGITAL LOOPBACK | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S51=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S51=0 &W | |--------------+---------------------------------------------| | Description: | Modem executes remote digital loopback on | | | receipt of CT140 signal from DTE | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S51=0 | Loopback disabled. | |--------------+---------------------------------------------| | i S51=1 | Loopback enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Example: | AT I1 O | |--------------+---------------------------------------------| | Description: | Displays modem properties. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Reports product code. | |--------------+---------------------------------------------| | I1 | Reports firmware 3 digit version number. | |--------------+---------------------------------------------| | I2 | Performs EPROM check | +------------------------------------------------------------+ +------------------------------------------------------------+ | STORED PROFILE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S88=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S88=0 &W | |--------------+---------------------------------------------| | Description: | Loads stored profile on disconnect. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S88=0 | Disabled. | |--------------+---------------------------------------------| | i S88=231 | Disabled. | |--------------+---------------------------------------------| | i S88=1 | Enabled. | |--------------+---------------------------------------------| | i S88=232 | Enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SWITCHED LINE SPEED | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S41=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS41=6 | |--------------+---------------------------------------------| | Default: | 24 | |--------------+---------------------------------------------| | Description: | Sets maximum line speed | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S41=1 | 14.4Kbps V.32bis | |--------------+---------------------------------------------| | i S41=2 | 12.0Kbps V.32bis | |--------------+---------------------------------------------| | i S41=3 | 9600bps V.32bis | |--------------+---------------------------------------------| | i S41=4 | 7200bps V.32bis | |--------------+---------------------------------------------| | i S41=5 | 4800bps V.32bis | |--------------+---------------------------------------------| | i S41=6 | 2400bps V.22bis | |--------------+---------------------------------------------| | i S41=7 | 1200bps V.22 | |--------------+---------------------------------------------| | i S41=8 | 1200bps 212A | |--------------+---------------------------------------------| | i S41=10 | 0-300bps V21 | |--------------+---------------------------------------------| | i S41=11 | 0-300bps 103J | |--------------+---------------------------------------------| | i S41=12 | 1200/75bps V.23 | |--------------+---------------------------------------------| | i S41=13 | 75/1200bps V.23 | |--------------+---------------------------------------------| | i S41=18 | 600/75bps V.23 | |--------------+---------------------------------------------| | i S41=19 | 75/600bps V.23 | |--------------+---------------------------------------------| | i S41=20 | 19.2Kbps V.32terbo | |--------------+---------------------------------------------| | i S41=21 | 16.8Kbps V.32terbo | |--------------+---------------------------------------------| | i S41=22 | 33.6Kbps | |--------------+---------------------------------------------| | i S41=23 | 31.2Kbps | |--------------+---------------------------------------------| | i S41=24 | 28.8Kbps V.34 | |--------------+---------------------------------------------| | i S41=25 | 26.4Kbps V.34 | |--------------+---------------------------------------------| | i S41=26 | 24.0Kbps V.34 | |--------------+---------------------------------------------| | i S41=27 | 21.6Kbps V.34 | |--------------+---------------------------------------------| | i S41=28 | 19.2Kbps V.34 | |--------------+---------------------------------------------| | i S41=29 | 16.8Kbps V.34 | |--------------+---------------------------------------------| | i S41=30 | 14.4Kbps V.34 | |--------------+---------------------------------------------| | i S41=31 | 12.0Kbps V.34 | |--------------+---------------------------------------------| | i S41=32 | 9600bps V.34 | |--------------+---------------------------------------------| | i S41=33 | 7200bps V.34 | |--------------+---------------------------------------------| | i S41=34 | 4800bps V.34 | |--------------+---------------------------------------------| | i S41=35 | 2400bps V.34 | +------------------------------------------------------------+ +------------------------------------------------------------+ | TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] &In [cmds] | |--------------+---------------------------------------------| | Example: | AT &I26 &W | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0-32 | |--------------+---------------------------------------------| | Unit: | -1 dBm | |--------------+---------------------------------------------| | Description: | Sets the signal level for transmission | |------------------------------------------------------------| | Note: 0-9 invalid in North America. | +------------------------------------------------------------+ +------------------------------------------------------------+ | TRELLIS MULTIPOINT TRANSMIT PREEMPHASIS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S96=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S96=0 &W | |--------------+---------------------------------------------| | Description: | Compensates for high frequency attenuation | | | with amplification | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S96=0 | Enabled | |--------------+---------------------------------------------| | i S96=1 | Disabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | TRELLIS MULTIPOINT TRAIN TIME | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S95=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S95=0 &W | |--------------+---------------------------------------------| | Description: | Selects train time from tributary to | | | control modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S95=0 | 10 milliseconds | |--------------+---------------------------------------------| | i S95=1 | 20 milliseconds | |--------------+---------------------------------------------| | i S95=2 | 50 milliseconds | |--------------+---------------------------------------------| | i S95=3 | 100 milliseconds | |--------------+---------------------------------------------| | i S95=4 | 200 milliseconds | |--------------+---------------------------------------------| | i S95=5 | 300 milliseconds | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.25bis CODE SET | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S62=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S62=0 &W | |--------------+---------------------------------------------| | Description: | Sets coding type used in V.25bis mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S62=0 | ASCII | |--------------+---------------------------------------------| | i S62=1 | EBCDIC | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.25bis IDLE CHARACTER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S63=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S63=0 &W | |--------------+---------------------------------------------| | Description: | Sets V.25 idle fill type | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S63=0 | Fill character is mark. | |--------------+---------------------------------------------| | i S63=1 | Fill character is flag. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.25bis NEW LINE CHARACTER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S64=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S64=0 &W | |--------------+---------------------------------------------| | Description: | Sets V.25 new line character. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S64=0 | Carriage return and line feed. | |--------------+---------------------------------------------| | i S64=1 | Carriage return. | |--------------+---------------------------------------------| | i S64=2 | Line feed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.29 LINK TYPE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S94=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S94=0 &W | |--------------+---------------------------------------------| | Description: | Selects point to point or multipoint | | | operation | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S94=0 | Point to point operation | |--------------+---------------------------------------------| | i S94=1 | Multipoint operation | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.29 RETRAIN | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S93=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S93=0 &W | |--------------+---------------------------------------------| | Description: | Modem transmits training sequence on | | | receipt of training sequence | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S93=0 | Enabled | |--------------+---------------------------------------------| | i S93=1 | Disabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.29 TRAIN | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S92=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S92=0 &W | |--------------+---------------------------------------------| | Description: | Allows retrain based on incoming data or | | | training sequence. Required for tributary | | | modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S92=0 | Disabled | |--------------+---------------------------------------------| | i S92=1 | Enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32bis AUTO-RETRAIN | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S76=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S76=0 &W | |--------------+---------------------------------------------| | Description: | Selects action the modem will take during | | | bad line quality on 32bis connection. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S76=0 | Auto retrain enabled. | |--------------+---------------------------------------------| | i S76=1 | Auto retrain disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.32bis TRAIN | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S43=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S43=0 &W | |--------------+---------------------------------------------| | Description: | Sets train length for V.34, V.32terbo, | | | V.32bis and V32. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S43=0 | Long | |--------------+---------------------------------------------| | i S43=1 | Short | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.34 SPLIT BAUD MODE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S14=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S14=0 | |--------------+---------------------------------------------| | Description: | Controls V.34 split baud mode. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S14=0 | V.34 split baud mode enabled. | |--------------+---------------------------------------------| | i S14=1 | V.34 split baud mode disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.42bis COMPRESSION CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] "Hn [cmds] | |--------------+---------------------------------------------| | Example: | AT "H3 &W | |--------------+---------------------------------------------| | Description: | Controls V.42bis data compression | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i "H0 | V.42bis disabled. | |--------------+---------------------------------------------| | i "H1 | V.42bis when transmitting enabled. | |--------------+---------------------------------------------| | i "H2 | V.42bis when receiving enabled. | |--------------+---------------------------------------------| | i "H3 | V.42bis when transmitting/receiving | | | enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.54 DEVICE ADDRESS | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S53=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS53=6 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-34 | |--------------+---------------------------------------------| | Unit: | Device address 0= disabled | |--------------+---------------------------------------------| | Description: | Identifies the address of the modem in | | | loopback test. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.54 DEVICE TYPE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S54=n [cmds] | |--------------+---------------------------------------------| | Example: | AT S54=0 &W | |--------------+---------------------------------------------| | Description: | Identifies modem's network position. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i S54=0 | Peripheral | |--------------+---------------------------------------------| | i S54=1 | Intermediate | +------------------------------------------------------------+ +------------------------------------------------------------+ | XON/XOFF PASS-THROUGH | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Xn [cmds] | |--------------+---------------------------------------------| | Example: | AT \X7 O | |--------------+---------------------------------------------| | Description: | Selects whether XON/XOFF signals are sent | | | to remote modem. | |--------------+---------------------------------------------| | i Command | Function | |--------------+---------------------------------------------| | i \X0 | XON/XOFF signals trapped by local modem. | |--------------+---------------------------------------------| | i \X1 | XON/XOFF passed through local modem. | +------------------------------------------------------------+ Proprietary V.25bis Command Set +------------------------------------------------------------+ | DISPLAY STORED NUMBERS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | RLNn | |--------------+---------------------------------------------| | Example: | RLN2 | |--------------+---------------------------------------------| | Description: | Display number in memory location n. If no | | | number is given, all stored numbers will be | | | displayed. | +------------------------------------------------------------+