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 Bell 103/212A Protocol ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29, Protocol V.33 Error MNP10, V.42bis Correction/Compression +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------------------------------------------------| | Line out | CN1 | Microphone | CN3 | |-----------------------------+----------+------------+------| | Line in | CN2 | Speaker | CN4 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |----------------------------------------+-------+-----------| | i Electret microphone | JP1 | Pins 1 & | | | | 2 closed | |----------------------------------------+-------+-----------| | Plantronics headset | JP1 | Pins 2 & | | | | 3 closed | |----------------------------------------+-------+-----------| | Dynamic microphone | JP1 | Open | |----------------------------------------+-------+-----------| | i Unpowered speaker, volume medium | JP2 | Closed | | level | | | |----------------------------------------+-------+-----------| | Powered speaker, volume low level | JP2 | Open | |----------------------------------------+-------+-----------| | Volume high level | JP2 | Closed | |----------------------------------------+-------+-----------| | i Unpowered speaker, volume medium | JP3 | Closed | | level | | | |----------------------------------------+-------+-----------| | 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 | |--------------+---------------------------------------------| | i %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 | |--------------+---------------------------------------------| | i %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 | |--------------+---------------------------------------------| | i \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 | |--------------+---------------------------------------------| | i \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 | |---------------+--------------------------------------------| | i 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 | |--------------+---------------------------------------------| | i \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 | |--------------+---------------------------------------------| | i \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 | |--------------+---------------------------------------------| | i -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 | |--------------+---------------------------------------------| | i -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 | |--------------+---------------------------------------------| | i *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 | |--------------+---------------------------------------------| | i )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 | |--------------+---------------------------------------------| | i x=11 | V.34 | |--------------+---------------------------------------------| | x=64 | Bell 103 | |--------------+---------------------------------------------| | x=69 | Bell 212A | |--------------+---------------------------------------------| | x=74 | V.FC | |--------------+---------------------------------------------| | y=0 | Automode disabled | |--------------+---------------------------------------------| | i 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 | |---------------+--------------------------------------------| | i 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. | |---------------+--------------------------------------------| | i Y=5 | Default setting | |---------------+--------------------------------------------| | Z=(0-3) | Microphone sensitivity; increase the value | | | the microphone becomes more sensitive. | |---------------+--------------------------------------------| | i 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 | |--------------+---------------------------------------------| | i :E1 | Equalizer enabled | +------------------------------------------------------------+