MAXTECH CORPORATION MAXTECH 9424H Card Type Modem(asynchronous) Chip Set Unidentified Maximum Data Rate 2400bps Maximum Fax Rate 9600bps Data Bus 8 bit ISA Fax Class Class I Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis Fax Modulation Protocol ITU-T V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Function Label Function Label Line in CN1 Line out CN2 SERIAL PORT ADDRESS Setting J1 J2 COM1 (3F8h) Pins 1 & 2 closed Pins 1 & 2 closed COM2 (2F8h) Pins 2 &3 closed Pins 1 & 2 closed COM3 (3E8h) Pins 1 & 2 closed Pins 2 &3 closed COM4 (2E8h) Pins 2 &3 closed Pins 2 &3 closed INTERRUPT Setting J3 J4 J5 J6 2 On Off Off Off 3 Off On Off Off 4 Off Off On Off 5 Off Off Off On Proprietary AT Command Set BIT-MAPPED REGISTER S14 Format AT [cmds] S14=n [cmds] Default: 170 Range: 0 - 174 Unit: Bit-mapped Description: Controls command echo, result codes, dialing mode, and answer/originate mode Bit Value Function 0 0 Not used 1 0 Command echo off 1 Command echo on 2 0 Result codes enabled 1 Result codes disabled 3 0 Numeric result codes 1 Verbose result codes 4 0 Not used 5 0 Tone dialing selected 1 Pulse dialing selected 6 0 Not used 7 0 Answer mode selected 1 Originate mode selected BIT-MAPPED REGISTER S21 Format AT [cmds] S21=n [cmds] Default: 0 Range: 0 - 249 Unit: Bit-mapped Description: Selects jack type, low DTR action, DCD signal, DSR signal, and the Long Space Disconnect function Bit Value Function 0 0 Selects RJ-11jack 1 Selects RJ-12 or RJ-13 jack 1 0 Not used 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 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=n [cmds] 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 Not used 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 off during dialing 6, 5 ,4 000 Busy and dialtone detection disabled, result codes 0-4 enabled 001 Not used 010 Not used 011 Not used 100 Busy and dialtone detection disabled, result 101 codes 0-5, 10 enabled 110 Busy tone detection disabled, dialtone detection enabled, result codes 0-6, 10 enabled 111 Busy tone detection enabled, dialtone detection disabled, result codes 0-5, 7, 10 enabled Busy and dialtone detection enabled, all result codes 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] Default: 7 Range: 0-247 Unit: Bit-mapped Description: Grants/denies remote digital loopback, connect speed, parity and guard tone Bit Value Function 0 0 Remote digital loopback denied 1 Remote digital loopback allowed 2, 1 00 Connect at 0-300bps 01 Not used 10 Connect at 1200bps 11 Connect at 2400bps 3 0 Not used 5,4 00 Parity even 01 Space parity 10 Parity odd 11 No Parity 7, 6 00 Guard tone disabled 01 Guard tone 550Hz enabled 10 Guard tone 1800Hz enabled 11 Not used BIT-MAPPED REGISTER S27 Format: AT [cmds] S27=n [cmds] Default: 64 Range: 0-127 Description: Asynchronous operation, leased/switched line, ITU-U/Bell operation Bit Value Function 3, 1, 0 0x00 Asynchronous operation 2 0 Switched line 1 Leased line 4 0 Not used 5 0 Not used 6 0 V.21/V.22 1 Bell 212A TEST STATUS Format AT [cmds] S16=n [cmds] Default: 0 Range: 0 - 122 Unit: Bit-mapped Description: Contains status of loopback tests 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 Remote digital loopback test disabled 1 Remote digital loopback test enabled 4 0 Remote digital loopback test not in progress 1 Remote digital loopback test in progress 5 0 Remote digital loopback test with test and error disabled 1 Remote digital loopback test with test and error enabled 6 0 Local digital loopback test with self test disabled 1 Local digital loopback test with self test enabled