VEN-TEL, INC. MCM96FAX Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 9600bps Maximum Fax Rate 9600bps Data Bus MCA Fax Class Class I & II Data Modulation Protocol Bell 103A/212A V.22, V.22bis, V.32 Fax Modulation Protocol Unidentified Error Correction/Compression MNP5, V.42, V.42bis Proprietary Command Set V1145 BIT-MAPPED REGISTER 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 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 0 Not used. 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 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 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. 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. COMPRESSION Type: Configuration Format: AT %Cn Example: AT %C0 #L0 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 flow control. Command Function » \G0 Flow control disabled. \G1 Flow control enabled. ID DISPLAY Type: Immediate Format: AT [cmds] In [cmds] Example: AT I1 &W Description: Displays modem properties. Command Function I0 Display product code. I1 Display checksum. I2 Display checksum check. I3 Display version number. INACTIVITY TIMER Type: Register Format: AT [cmds] \Tn [cmds] Example: AT\T20 Default: 0 Range: 0-255 Unit: 1 second Description: Sets the length of time that the modem does not receive information before it disconnects. LOOPBACK TEST Format AT [cmds] S16=n [cmds] Example: ATS16=40 Range: 0 - 190 Unit: Bit-mapped Description: Configures loopback test options. Bit Value Function 0 0 Local analog loopback disabled. 1 Local analog loopback enabled. 1 0 Not used. 2 0 Local digital loopback disabled. 1 Local digital loopback enabled. 3 0 Remote digital loopback not in progress. 1 Remote digital loopback in progress. 4 0 Remote digital loopback disabled. 1 Remote digital loopback enabled. 5 0 Remote digital loopback with self test disabled. 1 Remote digital loopback with self test enabled. 6 0 Local analog loopback with self test disabled. 1 Local analog loopback with self test enabled. 7 0 Not used. BIT-MAPPED REGISTER 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. 001 Asynchronous off-line command mode and 101 synchronous connect mode. 110 Error-correcting mode. Asynchronous mode, serial port speed locked. 2 0 Switched line enabled. 1 Leased line 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=201 Description: Selects data compression. Command Function S41=0 Data compression disabled. » S41=1 Data compression enabled.