COMPUTER PERIPHERALS, INC. ========================== VIVA 24M Modem Type Data (synchronous/asynchronous) Maximum Data Rate 2400bps Data Bus External Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis Error Correction/Compression MNP5 +------------------------------------------------------------+ | 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 | Blinking | Loopback tests enabled | |-----+-------+----------+-----------------------------------| | MR | Red | On | Power is on | |-----+-------+----------+-----------------------------------| | MR | Red | Off | Power is off | |------------------------------------------------------------| | Note: The LEDs are Icons. | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | ACCEPT RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \U | |--------------+---------------------------------------------| | Example: | AT \U | |--------------+---------------------------------------------| | Description: | Accepts remote modem's request for reliable | | | link. | +------------------------------------------------------------+ +------------------------------------------------------------+ | AUTO-RELIABLE FALLBACK CHARACTER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %An [cmds] | |--------------+---------------------------------------------| | Example: | AT %A0 | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | 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 \C0 &W | |--------------+---------------------------------------------| | Description: | Controls the handling of incoming data | | | during auto-reliable time period. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \CO | Data is discarded. | |--------------+---------------------------------------------| | \C1 | Data is buffered. | |--------------+---------------------------------------------| | \C2 | Data is discarded, sets to normal mode and | | | sends auto-reliable character to serial | | | port. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK SEND | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Bn [cmds] | |--------------+---------------------------------------------| | Example: | AT \B3 | |--------------+---------------------------------------------| | Default: | 3 | |--------------+---------------------------------------------| | Range: | 1-9 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sends break to modem. | +------------------------------------------------------------+ +--------------------------------------------------------------------+ | BREAK TYPE | |--------------------------------------------------------------------| |Type: |Configuration | |------------+-------------------------------------------------------| |Format: |AT [cmds] \Kn [cmds] | |------------+-------------------------------------------------------| |Example: |AT \K5 | |------------+-------------------------------------------------------| |Description:|Configures action of break signal. | |--------------------------------------------------------------------| | Command |Break from DTE | Break from | Break from | Modem | | | | DTE |remote modem|receives \B | | |Reliable/Normal| | | | | | mode |Direct mode | | | |-------------+---------------+------------+------------+------------| |\K0 |Enter command |Send break |Buffers |Buffers | | |mode, do not |to remote |cleared and |cleared and | | |send break to |modem |break sent |break sent | | |remote modem. |immediately,|to DTE. |to remote | | | |then enter | |modem. | | | |command | | | | | |mode. | | | |-------------+---------------+------------+------------+------------| |\K1 |Buffers cleared|Send break |Buffers |Buffers | | |and break sent |to remote |cleared and |cleared and | | |to remote |modem |break sent |break sent | | |modem. |immediately.|to DTE. |to remote | | | | | |modem. | |-------------+---------------+------------+------------+------------| |\K2 |Enter command |Send break |Send break |Send break | | |mode, do not |to remote |to DTE |to remote | | |send break to |modem |immediately.|modem | | |remote modem. |immediately,| |immediately.| | | |then enter | | | | | |command | | | | | |mode. | | | |-------------+---------------+------------+------------+------------| |\K3 |Send break to |Send break |Send break |Send break | | |remote modem |to remote |to DTE |to remote | | |immediately. |modem |immediately.|modem | | | |immediately.| |immediately.| |-------------+---------------+------------+------------+------------| |\K4 |Enter command |Send break |Break sent |Send break | | |mode, do not |to remote |with |to remote | | |send break to |modem |received |modem with | | |remote modem. |immediately,|data to the |transmitted | | | |then enter |DTE. |data. | | | |command | | | | | |mode. | | | |-------------+---------------+------------+------------+------------| |>> \K5 |Send break with|Send break |Break sent |Send break | | |transmitted |to remote |with |to remote | | |data. |modem |received |modem with | | | |immediately.|data to the |transmitted | | | | |DTE. |data. | +--------------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Cn [cmds] | |--------------+---------------------------------------------| | Example: | AT %C1 | |--------------+---------------------------------------------| | Description: | Selects data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled. | |--------------+---------------------------------------------| |>> %C1 | Data compression enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Example: | AT \N1 | |--------------+---------------------------------------------| | Description: | Sets connect mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \N0 | Normal mode enabled. | |--------------+---------------------------------------------| |>> \N1 | Direct mode enabled. | |--------------+---------------------------------------------| | \N2 | Reliable mode enabled. | |--------------+---------------------------------------------| | \N3 | Auto-reliable mode enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONVERT TO RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Y | |--------------+---------------------------------------------| | Example: | AT \Y | |--------------+---------------------------------------------| | Description: | Initiates reliable mode link. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DISPLAY CURRENT COMMAND STATUS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \S [cmds] | |--------------+---------------------------------------------| | Example: | AT \S | |--------------+---------------------------------------------| | Description: | Displays current setting of modem commands. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ECHO DATA | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \En [cmds] | |--------------+---------------------------------------------| | \Example: | AT \E0 | |--------------+---------------------------------------------| | Description: | Enables modem to echo received data. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \E0 | Data echo disabled. | |--------------+---------------------------------------------| | \E1 | Data echo enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Example: | AT \G0 | |--------------+---------------------------------------------| | Description: | Selects modem port flow control. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \G0 | Flow control disabled. | |--------------+---------------------------------------------| | \G1 | Flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Qn [cmds] | |--------------+---------------------------------------------| | Example: | AT \Q0 | |--------------+---------------------------------------------| | Description: | Sets type of flow control used by modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \Q0 | Flow control disabled. | |--------------+---------------------------------------------| | \Q1 | XON/XOFF flow control enabled. | |--------------+---------------------------------------------| | \Q2 | CTS flow control to DTE enabled. | |--------------+---------------------------------------------| | \Q3 | RTS/CTS flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Tn [cmds] | |--------------+---------------------------------------------| | Example: | AT\T0 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-90 | |--------------+---------------------------------------------| | Unit: | 1 minute | |--------------+---------------------------------------------| | Description: | Sets the length of time that the modem does | | | not receive information before it | | | disconnects. | |------------------------------------------------------------| | Note: \T0 will disable inactivity timer. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LOCK SERIAL PORT | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Jn [cmds] | |--------------+---------------------------------------------| | Example: | AT \J1 | |--------------+---------------------------------------------| | Description: | Sets operation of serial port speed. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \J0 | Serial speed locked. | |--------------+---------------------------------------------| |>> \J1 | Serial speed follows connect speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAXIMUM BLOCK SIZE FOR TRANSMISSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Example: | AT \A3 %C1 | |--------------+---------------------------------------------| | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP RESULT CODES | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Vn [cmds] | |--------------+---------------------------------------------| | Example: | AT \V1 | |--------------+---------------------------------------------| | Description: | Selects MNP result codes. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \V0 | MNP result codes disabled. | |--------------+---------------------------------------------| | \V1 | MNP result codes enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP STREAM/BLOCK MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Ln [cmds] | |--------------+---------------------------------------------| | Example: | AT \L0 | |--------------+---------------------------------------------| | Description: | Selects the transfer mode for MNP. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \L0 | Stream mode for MNP enabled. | |--------------+---------------------------------------------| | \L1 | Block mode for MNP enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ON-LINE IN RELIABLE MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \O | |--------------+---------------------------------------------| | Example: | AT \O | |--------------+---------------------------------------------| | Description: | Returns to on-line and requests reliable | | | mode connection. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SWITCH TO MNP MODE | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] \Z | |--------------+---------------------------------------------| | Example: | AT \Z | |--------------+---------------------------------------------| | Description: | Switches to normal mode from MNP mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | XON/XOFF PASS-THROUGH | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Xn [cmds] | |--------------+---------------------------------------------| | Example: | AT \X0 | |--------------+---------------------------------------------| | Description: | Selects whether XON/XOFF signals are sent | | | to remote modem. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \X0 | XON/XOFF signals trapped by local modem. | |--------------+---------------------------------------------| | \X1 | XON/XOFF passed through local modem. | +------------------------------------------------------------+