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 Protocol Bell 103A/212A ITU-T V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, MNP10, V.42, V.42bis [Image] 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 codes 110 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 synchronous 010 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 DTE Modem receives Break received \B from remote modem \K0 Online command Break sent to Buffers cleared, mode enabled, remote modem and break sent to send no break to buffered cleared DTE remote modem \K1 Break sent to Break sent to Buffers cleared, remote modem and remote modem and break sent to buffered cleared buffered cleared DTE \K2 Online command Send break to Break sent mode enabled, remote modem immediately to send no break to immediately DTE remote modem \K3 Send break to Send break to Break sent remote modem remote modem immediately to immediately immediately DTE \K4 Online command Send break with Break sent with mode enabled, transmitted data received data to send no break to the DTE remote modem » \K5 Send break with Send break with Break sent with transmitted data transmitted data received 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 Command Function @M0 -26dBm @M1 -30dBm @M2-@M10 -10dBm