ZOOM TELEPHONICS, INC. COMSTAR 28800 Card Type Fax, Modem (asynchronous), Voice Chip Set Unidentified I/O Options Speakerphone, Voice mail Maximum Data Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Bus 8-bit ISA Fax Class Class I & II Data Modulation Protocol Bell 103/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29, V.33 Error Correction/Compression MNP10, V.42bis [Image] CONNECTIONS Function Label Function Label Line out CN1 Microphone CN3 Line in CN2 Speaker CN4 USER CONFIGURABLE SETTINGS Function Label Position Electret microphone JP1 Pins 1 & 2 closed Plantronics headset JP1 Pins 2 & 3 closed Dynamic microphone JP1 Open Unpowered speaker, volume medium level JP2 Closed Powered speaker, volume low level JP2 Open Volume high level JP2 Closed Unpowered speaker, volume medium level JP3 Closed Powered speaker, volume low level JP3 Open Volume high level JP3 Open Proprietary AT Command Set AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD Type: Configuration Format: AT [cmds] %En [cmds] Description: Controls auto-retrain mode and auto-fallback/fall-forward Command Function %E0 Auto-retrain disabled %E1 Auto-retrain enabled %E2 Auto-fallback/fall-forward enabled %E3 Auto-retrain enabled with fast hang-up BIT MAPPED REGISTERS Register Default S14 Unidentified S16 Unidentified S21 Unidentified S22 Unidentified S23 Unidentified S27 Unidentified S28 Unidentified S31 Unidentified S40 Unidentified S41 Unidentified BREAK SEND Type: Configuration Format: AT [cmds] \Bn [cmds] Default: 3 Range: 1-9 Unit: .1 second Description: Sends break to modem BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Description: Configures action of break signal CALLER ID Type: Configuration Format: AT [cmds] #CID=n [cmds] Description: Controls the Caller ID function Command Function #CID=0 Caller ID disabled #CID=1 Caller ID enabled 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 MNP5 and V.42bis enabled CONNECT MODE Type: Configuration Format: AT [cmds] \Nn [cmds] Description: Controls the type of connection the modem will operate in Command Function \N0 Normal mode enabled \N1 Direct mode enabled \N2 Reliable mode enabled \N3 Auto-reliable mode enabled \N4 LAP-M error correcting only enabled \N5 MNP error correcting only enabled DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] Description: Dials telephone number according to any modifiers included in the string Modifier Function L Redials last number P Pulse dialing enabled T Tone dialing enabled W Dialing resumed following dial tone detection , Dialing paused for amount of time specified in S8 register @ Modem waits for a ring-back signal followed by silence up to 5 second prior to executing the rest of the dial string. R Command recognized and not initiated ; Modem returned to command mode after dialing. ! Flash function initiated. Goes on-hook for amount of time specified in S29 register S=(0-3) Number in memory location &Zn dialed ^ Calling tone enabled, data mode only. FLASH DIAL MODIFIER TIME Type: Register Format AT [cmds] S29=n [cmds] Default: 70 Range: 0-255 Unit: .01 second Description: Time the modem will go on-hook upon receiving the ! dial modifier in dial string. 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 Type: Register Format: AT [cmds] S39=n [cmds] Description: Select the type of flow control used Command Function S39=0 Flow control disabled S39=3 Hardware flow control enabled S39=4 Software flow control enabled S39=5 Transparent software flow control enabled S39=6 Both hardware and software flow control enabled 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 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 LINE SIGNAL LEVEL Type: Immediate Format: AT [cmds] %L [cmds] Description: Returns a value which indicates the received line signal level (-dBm) LINE SIGNAL QUALITY Type: Immediate Format: AT [cmds] %Q [cmds] Description: Returns a value which indicates line signal quality 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 MNP - STREAM/BLOCK MODE Type: Configuration Format: AT [cmds] \Ln [cmds] Description: Selects the transfer mode for MNP link Command Function \L0 Stream mode for MNP enabled \L1 Block mode for MNP enabled MNP10 - EXTENDED SERVICES Type: Configuration Format: AT [cmds] -Kn [cmds] Description: Selects MNP10 extended services Command Function -K0 MNP10 disabled -K1 MNP10 enabled -K2 MNP10 enabled on originate mode only MNP10 - FALLBACK Type: Configuration Format: AT [cmds] -Qn [cmds] Description: Allows MNP10 to fall back to 2400bps Command Function -Q0 MNP10 at 2400 disabled -Q1 MNP10 at 2400 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 *H2 Link will be negotiated at 4800bps 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 MODULATION SELECTION DISPLAY Type: Immediate Format: AT [cmds] +MS? [cmds] Description: Displays modulation, automode, minimum rate and maximum rate settings MODULATION SELECTION Type: Configuration Format: AT [cmds] +MS=x,y,z,a [cmds] Description: Sets options for active protocol; the transfer rates specified by z and a must be valid for the protocol selected. Command Function x=0 V.21 x=1 V.22 x=2 V.22bis x=3 V.23 x=9 V.32 x=10 V.32bis x=11 V.34 x=64 Bell 103 x=69 Bell 212A x=74 V.FC y=0 Automode disabled y=1 Auto-detect highest speed enabled z, a=300 Set minimum or maximum transfer rate at 300bps, respectively. z, a=1200 Set minimum or maximum transfer rate at 1200bps, respectively. z, a=2400 Set minimum or maximum transfer rate at 2400bps, respectively. z, a=4800 Set minimum or maximum transfer rate at 4800bps, respectively. z, a=7200 Set minimum or maximum transfer rate at 7200bps, respectively. z, a=9600 Set minimum or maximum transfer rate at 9600bps, respectively. z, a=12000 Set minimum or maximum transfer rate at 12000bps, respectively. z, a=14400 Set minimum or maximum transfer rate at 14400bps, respectively. z, a=16800 Set minimum or maximum transfer rate at 16800bps, respectively. z, a=19200 Set minimum or maximum transfer rate at 19200bps, respectively. z, a=21600 Set minimum or maximum transfer rate at 21600bps, respectively. z, a=24000 Set minimum or maximum transfer rate at 24000bps, respectively. z, a=26400 Set minimum or maximum transfer rate at 26400bps, respectively. z, a=28800 Set minimum or maximum transfer rate at 28800bps, respectively. 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. SPEAKERPHONE OPTIONS Type: Immediate/Configuration Format: AT [cmds] (see below) [cmds] Description: Configures the modem to voice mode Command Function #CLS=8 Enable voice mode #VLS=6 Enable speakerphone A Answer in-coming call #VRN=0 To originate a call, then AT<#> HZ Ends the call SPEAKERPHONE SETTINGS Type: Configuration Format: AT [cmds] #SPK=x, y, z [cmds] Description: Controls the speakerphone settings Command Function x=0 Microphone muted, speaker enabled x=1 Microphone and speaker enabled x=2 Microphone on maximum and speaker disabled y=(0-16) Speaker volume; increase the value lowers the volume. Y=5 Default setting Z=(0-3) Microphone sensitivity; increase the value the microphone becomes more sensitive. Z=1 Default setting TRANSMISSION LEVEL - CELLULAR Type: Configuration Format: AT [cmds] @Mn [cmds] Default: 0 Range: 11-30 Unit: -1 dBm Description: Sets the signal level for transmission while in cellular mode Command Function @M0 -26 dBm @M1 -30 dBm @M2-@M10 -10 dBm V.32 - COMPROMISE EQUALIZER Type: Configuration Format: AT [cmds] :En [cmds] Description: Controls V.32 compromise equalizer Command Function :E0 Equalizer disabled :E1 Equalizer enabled