VEN-TEL, INC. PCM96FAX Modem Type Data (synchronous/asynchronous) Maximum Data Rate 9600bps Maximum Fax Rate 9600bps Data Bus 8-bit ISA Fax Class Class I & II Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32 Fax Modulation Protocol V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] BASE I/O ADDRESS SELECTION Address SW1/1 SW1/2 SW1/3 SW1/4 COM1: (3F8h) Off On On Off COM2: (2F8h) On Off Off Off COM3: (3E8h) Off On On On COM4: (2E8h) On Off Off On INTERRUPT SELECTION IRQ SW1/1 SW1/2 J1/A J1/B J1/C J1/D 3 On Off Open Open Open Open 4 Off On Open Open Open Open 5 Off Off Closed Open Open Open 6 Off Off Open Closed Open Open 7 Off Off Open Open Closed Open SIGNAL GROUND Function JP2 Signal and chassis ground common Open Signal and chassis ground separate Closed Note: location of JP2 unidentified. FACTORY CONFIGURED SETTINGS Jumper Setting JP1 Unidentified Note: location of JP1 unidentified. Proprietary AT Command Set BIT-MAPPED REGISTER S14 Format AT [cmds] S14=n [cmds] Example: ATS14=139 Default: 171 Range: 0 - 255 Unit: Bit-mapped Description: Controls echo, quiet mode, result codes, dial mode, and originate/answer mode. Bit Value Function 0 1 Not used. 1 0 Command echo function disabled. » 1 Command echo function enabled. 2 » 0 Result code sending disabled. 1 Result code sending enabled. 3 0 Numeric format enabled. » 1 Verbose format enabled. 4 0 Not used. 5 0 Tone dialing mode enabled. » 1 Pulse dialing mode enabled. 6 » 0 Result codes normal. 1 Result codes disabled in answer mode. 7 0 Answer mode enabled. » 1 Originate mode enabled. BIT-MAPPED REGISTER S21 Format AT [cmds] S21=n [cmds] Example: ATS21=1 Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Controls low DTR action, DCD signal, and the Long Space Disconnect function. Bit Value Function 0 0 Not used. 1 » 0 Profile 0 enabled. 1 Profile 1 enabled. 2 4, 3 » 00 DTR signal normal. 01 Modem goes to command mode on low DTR. 10 Modem sends OK result code when DTR signal normal . 11 Modem resets on DTR signal. 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=n [cmds] Example: ATS22=114 Default: 118 Range: 0 - 255 Unit: Bit-mapped Description: Controls volume and speaker settings, result codes, and make/break pulse ratio. Bit Value Function 1, 0 00 Lowest volume setting. 01 Low volume setting. » 10 Medium volume setting 11 Highest volume setting. 3, 2 00 Speaker disabled. » 01 Speaker enabled until carrier signal detected 10 Speaker enabled. 11 Speaker enabled following dialing, then disabled after carrier signal detected. 6, 5 ,4 000 Busy and dialtone detection disabled, result codes 0-4 enabled. 100 Busy and dialtone detection disabled, 101 result codes 0-5, 10 enabled. 110 Busy tone detection disabled, dialtone detection enabled, result codes 0-6, 10 » 111 enabled. Busy tone detection enabled, dialtone detection disabled, result codes 0-5, 7, 10 enabled. Busy and dialtone detection enabled, result codes 0-7, 10 enabled. 7 » 0 39/61ms at 10pps (North America) 1 33/67ms at 10pps (Europe) BIT-MAPPED REGISTER S23 Format AT [cmds] S23=n [cmds] Example: ATS23=114 Default: 0, read-only (see note) Range: 0 - 255 Unit: Bit-mapped Description: Controls guard tones. Also indicates detected serial port speed and parity. Also provides storage for remote digital loopback tests. Note: All bits except bits 6 and 7 are read-only. Bit Value Function 0 N/A Reserved for internal use. 3, 2, 1 000 Local speed detected at 300bps. 001 Local speed detected at 600bps. 010 Local speed detected at 1200bps. 011 Local speed detected at 2400bps. 100 Local speed detected at 4800bps. » 101 Local speed detected at 9600bps. 110 Local speed detected at 19200bps. 111 Local speed detected at 38400bps. 5, 4 » 00 Even parity. 10 Odd parity. 11 No parity. 7, 6 » 00 Guard tone disabled. 01 550Hz guard tone enabled. 10 1800Hz guard tone enabled. BIT-MAPPED REGISTER S27 Format AT [cmds] S27=n [cmds] Example: ATS27=201 Default: 73 Range: 0 - 255 Unit: Bit-mapped Description: Controls communications mode, line type, and protocol type. Note: Be aware that bits 2 and 3 are out of order. Bit Value Function 3, 1, 0 000 Asynchronous mode, serial port speed follows connect speed. » 101 Error-correcting mode. 110 Asynchronous mode, serial port speed locked. 2 » 0 Switched line operation enabled. 1 Leased line operation enabled 4 0 Not used. 5 0 Not used. 6 » 0 Select CCITT protocols. 1 Select Bell protocols. 7 0 Not used. COMPRESSION Type: Register Format: AT [cmds] S41=n [cmds] Example: ATS41=2 Description: Selects data compression. Command Function S41=0 Data compression disabled. S41=1 Data compression enabled. COMPRESSION Type: Configuration Format: AT %Cn Example: AT %C0 *Y1 Description: Selects data compression. Command Function %C0 Data compression disabled. » %C1 Data compression enabled. FLOW CONTROL Type: Configuration Format: AT [cmds] \Gn [cmds] Example: AT G1 &K3 Description: Selects modem port flow control. Command Function » \G0 Flow control disabled. \G1 Flow control enabled. INACTIVITY TIMER Type: Register 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. LOOPBACK TESTS Format AT [cmds] S16=n [cmds] Example: ATS16=32 Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Enables loopback tests. Note: Bit 3 is read-only. Bit Value Function 0 » 0 Local analog loopback test disabled. 1 Local analog loopback test enabled. 1 0 Not used. 2 » 0 Local digital loopback test disabled. 1 Local digital loopback test enabled. 3 » 0 Modem is not performing remote digital loopback test. 1 Modem is performing remote digital loopback test. 4 » 0 Remote digital loopback test disabled. 1 Remote digital loopback test enabled. 5 » 0 Remote digital loopback with local self-test disabled. 1 Remote digital loopback with local self-test enabled. 6 » 0 Local analog loopback with local self-test disabled. 1 Local analog loopback with local self-test enabled.