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# COMPUTER PERIPHERALS, INC.
VIVA 28.8 EXTERNAL DATA/FAX
Modem Type Data (synchronous/asynchronous)/Fax
Maximum Data Rate 28.8Kbps
Maximum Fax Rate 14.4Kbps
Data Bus External
Fax Class Class I
Data Modulation Bell 103A/212A
Protocol
ITU-T V.22, V.22bis, V.23, V.32,
V.32bis, V.34
Rockwell V.FC
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Protocol
Error MNP5, MNP10, V.42, V.42bis
Correction/Compression
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Line out | CN1 | DC power | CN4 |
|------------------+----------+-------------------+----------|
| Line in | CN2 | Power switch | SW1 |
|------------------+----------+-------------------+----------|
| RS-232/422 | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+----------+-----------------------------------|
| HS | Red | On | Modem is operating at 2400bps |
|-----+-------+----------+-----------------------------------|
| HS | Red | Off | Modem is operating at slower than |
| | | | 2400bps |
|-----+-------+----------+-----------------------------------|
| AA | Red | On | Auto-answer enabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Off | Auto-answer disabled |
|-----+-------+----------+-----------------------------------|
| AA | Red | Blinking | Phone is ringing |
|-----+-------+----------+-----------------------------------|
| CD | Red | On | Carrier signal detected |
|-----+-------+----------+-----------------------------------|
| CD | Red | Off | Carrier signal not detected |
|-----+-------+----------+-----------------------------------|
| OH | Red | On | Modem is off-hook |
|-----+-------+----------+-----------------------------------|
| OH | Red | Off | Modem is on-hook |
|-----+-------+----------+-----------------------------------|
| RD | Red | On | Modem is receiving data |
|-----+-------+----------+-----------------------------------|
| RD | Red | Off | Modem is not receiving data |
|-----+-------+----------+-----------------------------------|
| SD | Red | On | Modem is transmitting data |
|-----+-------+----------+-----------------------------------|
| SD | Red | Off | Modem is not transmitting data |
|-----+-------+----------+-----------------------------------|
| TR | Red | On | DTR signal is high |
|-----+-------+----------+-----------------------------------|
| TR | Red | Off | DTR signal is low |
|-----+-------+----------+-----------------------------------|
| MR | Red | On | Power is on |
|-----+-------+----------+-----------------------------------|
| MR | Red | Off | Power is off |
|------------------------------------------------------------|
| Note: The LEDs are Icons |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| AUTO FALL FORWARD/FALLBACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects auto fallback |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » %G0 | Fallback disabled |
|--------------+---------------------------------------------|
| %G1 | Fallback enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO-RETRAIN - FALLBACK/FALLFORWARD |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls auto-retrain mode and |
| | fallback/fall forward |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %E0 | Auto-retrain disabled |
|--------------+---------------------------------------------|
| %E1 | Auto-retrain enabled |
|--------------+---------------------------------------------|
| %E2 | Fallback/fall forward enabled |
|--------------+---------------------------------------------|
| %E3 | Auto-retrain enabled, modem hangs up when |
| | line quality deteriorates. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14? [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays echo, result codes, result code |
| | display, dial mode, and answer/originate |
| | mode. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 0 | Not used |
|----------+--------+----------------------------------------|
| 1 | 0 | Command echo disabled |
| | | |
| | 1 | Command echo enabled |
|----------+--------+----------------------------------------|
| 2 | 0 | Result codes enabled |
| | | |
| | 1 | Result codes disabled |
|----------+--------+----------------------------------------|
| 3 | 0 | Display result codes in numeric format |
| | | |
| | 1 | Display result codes in verbose format |
|----------+--------+----------------------------------------|
| 4 | 0 | Not used |
|----------+--------+----------------------------------------|
| 5 | 0 | Tone dial enabled |
| | | |
| | 1 | Pulse dial enabled |
|----------+--------+----------------------------------------|
| 6 | 0 | Not used |
|----------+--------+----------------------------------------|
| 7 | 0 | Answer mode enabled |
| | | |
| | 1 | Originate mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S21 |
|------------------------------------------------------------|
| Format | AT [cmds] S21? [cmds] |
|----------------+-------------------------------------------|
| Default: | Read-only |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Displays jack type, CTS signal, low DTR |
| | action, DCD signal, DSR signal, and the |
| | long space disconnect function. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 | Selects RJ-11, RJ-41S, or RJ45S jack |
| | | |
| | 1 | Selects RJ-12 or RJ-13 jack |
|----------+-------+-----------------------------------------|
| 1 | 0 | Not used |
|----------+-------+-----------------------------------------|
| 2 | 0 | CTS follows RTS |
| | | |
| | 1 | CTS forced high |
|----------+-------+-----------------------------------------|
| 4, 3 | 00 | DTR signal ignored |
| | | |
| | 01 | Modem goes to command mode on low DTR |
| | | |
| | 10 | Modem disconnects on low DTR. |
| | | Auto-Answer is disabled |
| | 11 | |
| | | Modem is initialized on low DTR |
|----------+-------+-----------------------------------------|
| 5 | 0 | DCD forced high |
| | | |
| | 1 | DCD normal |
|----------+-------+-----------------------------------------|
| 6 | 0 | DSR forced high |
| | | |
| | 1 | DSR normal |
|----------+-------+-----------------------------------------|
| 7 | 0 | Long Space Disconnect function disabled |
| | | |
| | 1 | Long Space Disconnect function enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S22 |
|------------------------------------------------------------|
| Format | AT [cmds] S22? [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays speaker volume and controls, |
| | limits results codes, and make/break |
| | pulse ratio. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 1, 0 | 00 | On volume |
| | | |
| | 01 | Low level volume |
| | | |
| | 10 | Medium level volume |
| | | |
| | 11 | High level volume |
|------------+-------+---------------------------------------|
| 3, 2 | 00 | Speaker off |
| | | |
| | 01 | Speaker off on carrier |
| | | |
| | 10 | Speaker always on |
| | | |
| | 11 | Speaker on during handshake |
|------------+-------+---------------------------------------|
| 6, 5, 4 | 000 | Basic result codes only enabled |
| | | |
| | 100 | Basic and connection speed result |
| | | codes enabled |
| | 101 | |
| | | Basic and connection speed result |
| | 110 | codes and dialtone detection enabled |
| | | |
| | 111 | All result codes except dialtone |
| | | detection enabled |
| | | |
| | | All result codes enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S23 |
|------------------------------------------------------------|
| Format | AT [cmds] S23? [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays remote digital loopback, DTE |
| | rate and parity, and guard tone. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+-------+---------------------------------------|
| 0 | 0 | Remote digital loopback denied |
| | | |
| | 1 | Remote digital loopback allowed |
|------------+-------+---------------------------------------|
| 3, 2, 1 | 000 | Sets serial port speed to 0-300bps |
| | | |
| | 001 | Sets serial port speed to 600bps |
| | | |
| | 010 | Sets serial port speed to 1200bps |
| | | |
| | 011 | Sets serial port speed to 2400bps |
| | | |
| | 100 | Sets serial port speed to 4800bps |
| | | |
| | 101 | Sets serial port speed to 9600bps |
| | | |
| | 110 | Sets serial port speed to 19200bps |
| | | |
| | 111 | Sets serial port speed to 38400bps |
|------------+-------+---------------------------------------|
| 5,4 | 0 | Not used |
|------------+-------+---------------------------------------|
| 7, 6 | 00 | Guard tone disabled |
| | | |
| | 01 | Guard tone 550Hz enabled |
| | | |
| | 10 | Guard tone 1800Hz enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S27 |
|------------------------------------------------------------|
| Format | AT [cmds] S27? [cmds] |
|------------------+-----------------------------------------|
| Default: | Read-only |
|------------------+-----------------------------------------|
| Range: | 0-255 |
|------------------+-----------------------------------------|
| Unit: | Bit-mapped |
|------------------+-----------------------------------------|
| Description: | Displays synchronous/asynchronous mode, |
| | Line type, clock source, and ITU-T/Bell |
| | modes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|------------+----------+------------------------------------|
| 3, 1, 0 | 000 | Asynchronous mode, serial port |
| | | speed follows connect speed |
| | 001 | |
| | | Asynchronous command mode and |
| | 010 | synchronous connect mode |
| | | |
| | 011 | Asynchronous command mode and |
| | | synchronous connect mode |
| | 100 | |
| | | Asynchronous command mode on low |
| | | DTR, synchronous connect mode on |
| | | high DTR |
| | | |
| | | Hayes AutoSync™ mode |
|------------+----------+------------------------------------|
| 2 | 0 | Dial up line |
| | | |
| | 1 | Leased line |
|------------+----------+------------------------------------|
| 5, 4 | 00 | Internal transmit clock source |
| | | |
| | 01 | External transmit clock source |
| | | |
| | 10 | Remote transmit clock source |
|------------+----------+------------------------------------|
| 6 | 0 | CCITT mode |
| | | |
| | 1 | Bell mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S28 |
|------------------------------------------------------------|
| Format | AT [cmds] S28=n [cmds] |
|----------------+-------------------------------------------|
| Default: | Read-only |
|----------------+-------------------------------------------|
| Range: | 0-255 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Displays V.23 split baud mode, V.23 |
| | speed/direction, pulse dialing, and MNP10 |
| | link negoiation. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+--------+----------------------------------------|
| 0 | 0 | V.23 split baud mode disabled |
| | | |
| | 1 | V.23 split baud mode enabled |
|----------+--------+----------------------------------------|
| 1 | 0 | Select 75bps transmit, 1200bps receive |
| | | |
| | 1 | Select 1200bps transmit, 75bps receive |
|----------+--------+----------------------------------------|
| 2 | 0 | Not used |
|----------+--------+----------------------------------------|
| 4, 3 | 00 | 39ms make/61ms break at 10pps |
| | | |
| | 01 | 33ms make/67ms break at 10pps |
| | | |
| | 10 | 39ms make/61ms break at 20pps |
| | | |
| | 11 | 33ms make/67ms break at 20pps |
|----------+--------+----------------------------------------|
| 5 | 0 | Not used |
|----------+--------+----------------------------------------|
| 7, 6 | 00 | Link will be negotiated at highest |
| | | possible speed |
| | 01 | |
| | | Link will be negotiated at 1200bps |
| | 10 | |
| | | Link will be negotiated at 4800bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S31 |
|------------------------------------------------------------|
| Format | AT [cmds] S31=n [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays auto-baud function and result |
| | codes. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 0 | 0 | Not used |
|-----------+-------+----------------------------------------|
| 1 | 0 | Auto-baud disabled |
| | | |
| | 1 | Auto-baud enabled |
|-----------+-------+----------------------------------------|
| 3, 2 | 00 | DTE speed displayed in result codes |
| | | |
| | 01 | Extended result codes enabled; DCE |
| | | speed displayed in result codes. |
| | 10 | |
| | | DCE speed displayed in result codes |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S40 |
|------------------------------------------------------------|
| Format | AT [cmds] S40=n [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays MNP10 services, break control, |
| | and MNP block size. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+-------+----------------------------------------|
| 1, 0 | 00 | MNP10 disabled |
| | | |
| | 01 | MNP10 enabled |
| | | |
| | 10 | MNP10 enabled on originate mode only |
|-----------+-------+----------------------------------------|
| 0 | 0 | MNP10 disabled |
| | | |
| | 1 | MNP10 enabled |
|-----------+-------+----------------------------------------|
| 1 | 0 | MNP10 at 2400 and 1200bps disabled |
| | | |
| | 1 | MNP10 at 2400 and 1200bps enabled |
|-----------+-------+----------------------------------------|
| 2 | 0 | Power level adjustment disabled |
| | | |
| | 1 | Power level adjustment enabled |
|-----------+-------+----------------------------------------|
| 5 - 3 | 000 | \K0 |
| | | |
| | 001 | \K1 |
| | | |
| | 010 | \K2 |
| | | |
| | 100 | \K3 |
| | | |
| | 101 | \K4 |
| | | |
| | 110 | \K5 |
|-----------+-------+----------------------------------------|
| 7, 6 | 00 | MNP block size is 64 characters |
| | | |
| | 01 | MNP block size is 128 characters |
| | | |
| | 10 | MNP block size is 192 characters |
| | | |
| | 11 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S41 |
|------------------------------------------------------------|
| Format | AT [cmds] S41=n [cmds] |
|-----------------+------------------------------------------|
| Default: | Read-only |
|-----------------+------------------------------------------|
| Range: | 0-255 |
|-----------------+------------------------------------------|
| Unit: | Bit-mapped |
|-----------------+------------------------------------------|
| Description: | Displays compression, auto-retrain, flow |
| | control, stream/block mode and MNP10 |
| | fallback. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+---------+--------------------------------------|
| 1, 0 | 00 | Data compression disabled |
| | | |
| | 01 | MNP5 enabled |
| | | |
| | 10 | V.42bis enabled |
| | | |
| | 11 | MNP5 and V.42bis enabled |
|-----------+---------+--------------------------------------|
| 6, 2 | 00 | Auto-retrain disabled |
| | | |
| | 01 | Auto-retrain enabled |
| | | |
| | 10 | %E2 |
|-----------+---------+--------------------------------------|
| 3 | 0 | Flow control disabled |
| | | |
| | 1 | Flow control enabled |
|-----------+---------+--------------------------------------|
| 4 | 0 | Stream mode for MNP |
| | | |
| | 1 | Block mode for MNP |
|-----------+---------+--------------------------------------|
| 7 | 0 | MNP10 at 2400 and 1200bps disabled |
| | | |
| | 1 | MNP10 at 2400 and 1200bps enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK SEND |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Bn [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-9 |
|--------------+---------------------------------------------|
| Unit: | .1 second |
|--------------+---------------------------------------------|
| Description: | Sends break to modem |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BREAK TYPE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Configures action of break signal |
|------------------------------------------------------------|
| Command | Break from | Modem | Break |
| | DTE | receives \B | received |
| | | | from remote |
| | | | modem |
|---------------+---------------+--------------+-------------|
| \K0 | Online | Break sent | Buffers |
| | command mode | to remote | cleared, |
| | enabled, send | modem and | break sent |
| | no break to | buffered | to DTE |
| | remote modem | cleared | |
|---------------+---------------+--------------+-------------|
| \K1 | Break sent to | Break sent | Buffers |
| | remote modem | to remote | cleared, |
| | and buffered | modem and | break sent |
| | cleared | buffered | to DTE |
| | | cleared | |
|---------------+---------------+--------------+-------------|
| \K2 | Online | Send break | Break sent |
| | command mode | to remote | immediately |
| | enabled, send | modem | to DTE |
| | no break to | immediately | |
| | remote modem | | |
|---------------+---------------+--------------+-------------|
| \K3 | Send break to | Send break | Break sent |
| | remote modem | to remote | immediately |
| | immediately | modem | to DTE |
| | | immediately | |
|---------------+---------------+--------------+-------------|
| \K4 | Online | Send break | Break sent |
| | command mode | with | with |
| | enabled, send | transmitted | received |
| | no break to | data | data to the |
| | remote modem | | DTE |
|---------------+---------------+--------------+-------------|
| » \K5 | Send break | Send break | Break sent |
| | with | with | with |
| | transmitted | transmitted | received |
| | data | data | data to the |
| | | | DTE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CELLULAR TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S201=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Controls cellular transmission level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Cn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| %C0 | Data compression disabled |
|--------------+---------------------------------------------|
| %C1 | MNP5 enabled |
|--------------+---------------------------------------------|
| %C2 | V.42bis enabled |
|--------------+---------------------------------------------|
| » %C3 | Both MNP5 AND V.42bis enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| COMPROMISE EQUALIZER |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] :En [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls V.32 compromise equalizer |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| :E0 | Equalizer disabled |
|--------------+---------------------------------------------|
| » :E1 | Equalizer enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONNECT MODE |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Nn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets connect mode |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \N0 | Normal mode enabled |
|--------------+---------------------------------------------|
| \N1 | Direct mode enabled |
|--------------+---------------------------------------------|
| \N2 | Reliable mode enabled |
|--------------+---------------------------------------------|
| » \N3 | Auto-reliable mode enabled |
|--------------+---------------------------------------------|
| \N4 | LAPM mode enabled |
|--------------+---------------------------------------------|
| \N5 | MNP mode enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FAX TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S92=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Controls fax transmission level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \Gn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects modem port flow control |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » \G0 | Flow control disabled |
|--------------+---------------------------------------------|
| \G1 | Flow control enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XON |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S32=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 17 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XON |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOW CONTROL CHARACTER - XOFF |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S33=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 19 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the character used to represent XOFF |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LEASED LINE TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S99=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Controls leased-line transmission level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| LINE SIGNAL LEVEL |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %L [cmds] |
|--------------+---------------------------------------------|
| Range: | 9-43 |
|--------------+---------------------------------------------|
| Unit: | -1dBm |
|--------------+---------------------------------------------|
| Description: | Returns received line signal level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MAXIMUM BLOCK SIZE FOR TRANSMISSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] \An [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the maximum transmittable block size |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| \A0 | MNP block size is 64 characters |
|--------------+---------------------------------------------|
| » \A1 | MNP block size is 128 characters |
|--------------+---------------------------------------------|
| \A2 | MNP block size is 192 characters |
|--------------+---------------------------------------------|
| \A3 | MNP block size is 256 characters |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 COMPRESSION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Kn [cmds] |
|--------------+---------------------------------------------|
| Description: | Selects MNP10 data compression |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -K0 | MNP10 disabled |
|--------------+---------------------------------------------|
| » -K1 | MNP10 enabled |
|--------------+---------------------------------------------|
| -K2 | MNP10 enabled on originate mode only |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 FALL-BACK |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] -Qn [cmds] |
|--------------+---------------------------------------------|
| Description: | Allows MNP10 to fall back to speeds slower |
| | than 4800bps |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| -Q0 | MNP10 at 2400 and 1200bps disabled |
|--------------+---------------------------------------------|
| » -Q1 | MNP10 at 2400 and 1200bps enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 LINK NEGOTIATION |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] *Hn [cmds] |
|--------------+---------------------------------------------|
| Description: | Sets the speed at which MNP10 link |
| | negotiation will occur |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » *H0 | Link will be negotiated at highest possible |
| | speed |
|--------------+---------------------------------------------|
| *H1 | Link will be negotiated at 1200bps |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MNP10 POWER LEVEL ADJUST |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] )Mn [cmds] |
|--------------+---------------------------------------------|
| Description: | Controls automatic transmit power level |
| | adjustment during MNP 10 link negotiation |
|--------------+---------------------------------------------|
| Command | Function |
|--------------+---------------------------------------------|
| » )M0 | Power level adjustment disabled |
|--------------+---------------------------------------------|
| )M1 | Power level adjustment enabled |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REMOTE ACCESS ESCAPE CHARACTER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S202=n [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | ASCII |
|--------------+---------------------------------------------|
| Description: | Sets the remote access escape character |
+------------------------------------------------------------+
+------------------------------------------------------------+
| REPORT LINE SIGNAL QUALITY |
|------------------------------------------------------------|
| Type: | Immediate |
|--------------+---------------------------------------------|
| Format: | AT [cmds] %Q [cmds] |
|--------------+---------------------------------------------|
| Description: | Returns line signal quality |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLEEP TIMER |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S24=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 0 |
|--------------+---------------------------------------------|
| Range: | 0-255 |
|--------------+---------------------------------------------|
| Unit: | 1 second |
|--------------+---------------------------------------------|
| Description: | Maximum duration of DTE and DCE inactivity |
| | allowed prior to initiating low-power sleep |
| | mode |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SWITCHED TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Register |
|--------------+---------------------------------------------|
| Format: | AT [cmds] S91=n [cmds] |
|--------------+---------------------------------------------|
| Default: | 10 |
|--------------+---------------------------------------------|
| Range: | 0-15 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Controls switched transmission level |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16? [cmds] |
|---------------+--------------------------------------------|
| Default: | Read-only |
|---------------+--------------------------------------------|
| Range: | 0-255 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Displays loopback tests, analog, digital, |
| | remote digital, and self tests |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | 0 | Local analog loopback not in progress |
| | | |
| | 1 | Local analog loopback in progress |
|---------+-------+------------------------------------------|
| 1 | 0 | Not used |
|---------+-------+------------------------------------------|
| 2 | 0 | Local digital loopback not in progress |
| | | |
| | 1 | Local digital loopback in progress |
|---------+-------+------------------------------------------|
| 3 | 0 | Modem not in remote digital loopback |
| | | |
| | 1 | Remote digital loopback in progress |
|---------+-------+------------------------------------------|
| 4 | 0 | Remote digital loopback not requested |
| | | |
| | 1 | Remote digital loopback requested |
|---------+-------+------------------------------------------|
| 5 | 0 | Remote digital loopback w/ self-test not |
| | | in progress |
| | 1 | |
| | | Remote digital loopback w/ self-test in |
| | | progress |
|---------+-------+------------------------------------------|
| 6 | 0 | Local analog loopback w/ self-test not |
| | | in progress |
| | 1 | |
| | | Local analog loopback w/ self-test in |
| | | progress |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TRANSMISSION LEVEL |
|------------------------------------------------------------|
| Type: | Configuration |
|--------------+---------------------------------------------|
| Format: | AT [cmds] @Mn [cmds] |
|--------------+---------------------------------------------|
| Default: | Unidentified |
|--------------+---------------------------------------------|
| Range: | 11-31 |
|--------------+---------------------------------------------|
| Unit: | -1 dBm |
|--------------+---------------------------------------------|
| Description: | Sets initial transmit power level for |
| | transmission |
|--------------+---------------------------------------------|
| í Command | Function |
|--------------+---------------------------------------------|
| @M0 | -26dBm |
|--------------+---------------------------------------------|
| @M1 | -30dBm |
|--------------+---------------------------------------------|
| @M2-@M10 | -10dBm |
+------------------------------------------------------------+