ZOOM TELEPHONICS, INC. ====================== V.34 X Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Bell 103A/212A Protocol ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29 Protocol Error MNP5, V.42, V.42bis Correction/Compression +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Line out | CN1 | DC power | CN4 | |------------------+----------+-------------------+----------| | Line in | CN2 | Power switch | SW1 | |------------------+----------+-------------------+----------| | RS-232/422 | CN3 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAGNOSTIC LED(S) | |------------------------------------------------------------| | LED | Color | Status | Condition | |------+-------+----------+----------------------------------| | MSG | Red | On | Stored faxes exist | |------+-------+----------+----------------------------------| | MSG | Red | Off | No faxes stored | |------+-------+----------+----------------------------------| | FX | Red | On | Modem is connected in FAX mode | |------+-------+----------+----------------------------------| | FX | Red | Off | Modem is not connected in FAX | | | | | mode | |------+-------+----------+----------------------------------| | V.34 | Red | On | Modem is in V.34 mode. | |------+-------+----------+----------------------------------| | V.34 | Red | Off | Modem is not in V.34 mode. | |------+-------+----------+----------------------------------| | V.FC | Red | On | Modem is in V.FC mode. | |------+-------+----------+----------------------------------| | V.FC | Red | Off | Modem is not in V.FC mode. | |------+-------+----------+----------------------------------| | 14.4 | Red | On | Modem connected at 14.4Kbps | |------+-------+----------+----------------------------------| | 14.4 | Red | Off | Modem not connected at 14.4Kbps | |------+-------+----------+----------------------------------| | DC | Red | On | Error correction enabled | |------+-------+----------+----------------------------------| | DC | Red | Off | Error correction disabled | |------+-------+----------+----------------------------------| | EC | Red | On | Error correction enabled | |------+-------+----------+----------------------------------| | EC | Red | Off | Error correction disabled | |------+-------+----------+----------------------------------| | FC | Red | On | Flow control enabled | |------+-------+----------+----------------------------------| | FC | Red | Off | Flow control disabled | |------+-------+----------+----------------------------------| | AA | Red | On | Auto-answer enabled | |------+-------+----------+----------------------------------| | AA | Red | Off | Auto-answer disabled | |------+-------+----------+----------------------------------| | AA | Red | Blinking | Phone is ringing | |------+-------+----------+----------------------------------| | CD | Red | On | Carrier signal detected | |------+-------+----------+----------------------------------| | CD | Red | Off | Carrier signal not detected | |------+-------+----------+----------------------------------| | OH | Red | On | Modem is off-hook | |------+-------+----------+----------------------------------| | OH | Red | Off | Modem is on-hook | |------+-------+----------+----------------------------------| | RD | Red | On | Modem is receiving data | |------+-------+----------+----------------------------------| | RD | Red | Off | Modem is not receiving data | |------+-------+----------+----------------------------------| | TD | Red | On | Modem is transmitting data | |------+-------+----------+----------------------------------| | TD | Red | Off | Modem is not transmitting data | |------+-------+----------+----------------------------------| | TR | Red | On | DTR signal is high | |------+-------+----------+----------------------------------| | TR | Red | Off | DTR signal is low | |------+-------+----------+----------------------------------| | MR | Red | On | Power is on | |------+-------+----------+----------------------------------| | MR | Red | Off | Power is off | +------------------------------------------------------------+ Proprietary AT Command Set +------------------------------------------------------------+ | AUTO-RETRAIN | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %En | |--------------+---------------------------------------------| | Example: | AT %E1 | |--------------+---------------------------------------------| | Description: | Selects auto-retrain mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %E0 | Auto-retrain disabled. | |--------------+---------------------------------------------| | %E1 | Auto-retrain enabled. | |--------------+---------------------------------------------| |>> %E2 | Fallback/fall forward enabled. | |--------------+---------------------------------------------| | %E3 | Fallback/fall forward and fast hang-up | | | enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT %Cn | |--------------+---------------------------------------------| | Example: | AT *EC0 %C1 *AP0 | |--------------+---------------------------------------------| | Description: | Selects data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | %C0 | Data compression disabled. | |--------------+---------------------------------------------| | %C1 | MNP5 enabled. | |--------------+---------------------------------------------| | %C2 | V.42bis enabled. | |--------------+---------------------------------------------| |>> %C3 | MNP5 and V.42bis enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BREAK SEND | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Bn [cmds] | |--------------+---------------------------------------------| | Example: | AT \B3 &W | |--------------+---------------------------------------------| | Default: | 3 | |--------------+---------------------------------------------| | Range: | 1-9 | |--------------+---------------------------------------------| | Unit: | .1 second | |--------------+---------------------------------------------| | Description: | Sends break to modem. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL TYPE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT \K1 | |--------------+---------------------------------------------| | Description: | Configures action of break signal. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \K0 | Flow control disabled. | |--------------+---------------------------------------------| |>> \K3 | RTS/CTS flow control enabled. | |--------------+---------------------------------------------| | \K4 | XON/XOFF flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECT MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Nn [cmds] | |--------------+---------------------------------------------| | Example: | AT \N1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Sets connect mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \N0 | Normal mode enabled. | |--------------+---------------------------------------------| | \N1 | Direct mode enabled. | |--------------+---------------------------------------------| | \N2 | Error correction mode enabled. | |--------------+---------------------------------------------| |>> \N3 | MNP mode with fallback to normal mode | | | enabled. | |--------------+---------------------------------------------| | \N4 | LAPM mode only enabled. | |--------------+---------------------------------------------| | \N5 | MNP mode only enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CELLULAR TRANSMISSION LEVEL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] @Mn [cmds] | |--------------+---------------------------------------------| | Example: | AT @M26 &W | |--------------+---------------------------------------------| | Default: | 26 | |--------------+---------------------------------------------| | Range: | 10 - 31 | |--------------+---------------------------------------------| | Unit: | -1 dBm | |--------------+---------------------------------------------| | Description: | Sets the signal level for transmission when | | | in leased line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | COMPROMISE EQUALIZER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] :En [cmds] | |--------------+---------------------------------------------| | Example: | AT :E &W | |--------------+---------------------------------------------| | Description: | Controls V.32 compromise equalizer. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | :E0 | Equalizer disabled. | |--------------+---------------------------------------------| |>> :E1 | Equalizer enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONNECTION FAILURE CODES | |------------------------------------------------------------| | Format | AT [cmds] S86? [cmds] | |--------------+---------------------------------------------| | Example: | ATS86? | |--------------+---------------------------------------------| | Default: | Read-only | |--------------+---------------------------------------------| | Range: | 0, 4 - 14 | |--------------+---------------------------------------------| | Unit: | None | |--------------+---------------------------------------------| | Stored: | N/A | |--------------+---------------------------------------------| | Description: | Reports codes which correspond to the | | | possible causes of a connection failure. | |--------------+---------------------------------------------| | Value | Meaning | |--------------+---------------------------------------------| | 0 | No failure - normal hang-up. | |--------------+---------------------------------------------| | 4 | Carrier signal lost. | |--------------+---------------------------------------------| | 5 | No error-control detected for remote modem | | | during feature negotiation. | |--------------+---------------------------------------------| | 6 | Remote modem failed to respond to feature | | | negotiation. | |--------------+---------------------------------------------| | 7 | Local modem is asynchronous-only, remote | | | modem is synchronous-only. | |--------------+---------------------------------------------| | 8 | No common framing technique found. | |--------------+---------------------------------------------| | 9 | No common protocol found. | |--------------+---------------------------------------------| | 10 | Remote modem sent erroneous feature | | | negotiation message. | |--------------+---------------------------------------------| | 11 | Remote modem failed to send synchronous | | | information. | |--------------+---------------------------------------------| | 12 | No failure - remote modem disconnected | | | normally. | |--------------+---------------------------------------------| | 13 | Remote modem failed to respond after 10 | | | re-transmissions same message. | |--------------+---------------------------------------------| | 14 | Violation of negotiated protocol caused | | | failure. | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERROR CORRECTION REJECTION | |------------------------------------------------------------| | Format | AT [cmds] S36=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS36=0 | |--------------+---------------------------------------------| | Default: | Unidentified | |--------------+---------------------------------------------| | Range: | 0 - 7 | |--------------+---------------------------------------------| | Unit: | Bit-mapped | |--------------+---------------------------------------------| | Description: | Configures the modem's behavior if an | | | error-correcting connection cannot be made. | |------------------------------------------------------------| | Command | Function | |------------+-----------------------------------------------| | 0 | Modem disconnects | |------------+-----------------------------------------------| | 3 | Modem attempts normal connection. | |------------+-----------------------------------------------| | 4 | Modem attempts MNP connection. | |------------+-----------------------------------------------| | 7 | Modem attempts MNP connection. If it fails, | | | modem attempts normal connection. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLASH DIAL MODIFIER TIME | |------------------------------------------------------------| | Format | AT [cmds] S29=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS29=0 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 10 ms | |--------------+---------------------------------------------| | 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] | |--------------+---------------------------------------------| | Example: | AT G1 &K3 | |--------------+---------------------------------------------| | Description: | Selects modem port flow control. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \G0 | Flow control disabled. | |--------------+---------------------------------------------| | \G1 | Flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL DISPLAY | |------------------------------------------------------------| | Format | AT [cmds] S39? [cmds] | |----------------+-------------------------------------------| | Example: | ATS39? | |----------------+-------------------------------------------| | Default: | Read-only | |----------------+-------------------------------------------| | Range: | 0, 3 - 6 | |----------------+-------------------------------------------| | Unit: | None | |----------------+-------------------------------------------| | Stored: | N/A | |----------------+-------------------------------------------| | Description: | Contains the current flow control. | |------------------------------------------------------------| | Value | Meaning | |----------+-------------------------------------------------| | 0 | Flow control is disabled. | |----------+-------------------------------------------------| |>> 3 | RTS/CTS flow control is enabled. | |----------+-------------------------------------------------| | 4 | XON/XOFF flow control is enabled. | |----------+-------------------------------------------------| | 5 | AFT XON/XOFF flow control is enabled. | |----------+-------------------------------------------------| | 6 | RTS/CTS and XON/XOFF flow control enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | FLOW CONTROL CHARACTER - XOFF | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format: | AT [cmds] S33=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS33=20 | |--------------+---------------------------------------------| | 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] | |--------------+---------------------------------------------| | Example: | ATS32=20 | |--------------+---------------------------------------------| | Default: | 17 | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | ASCII | |--------------+---------------------------------------------| | Description: | Sets the character used to represent XON. | +------------------------------------------------------------+ +------------------------------------------------------------+ | LEASED LINE RECEIVE LEVEL DISPLAY | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] %L [cmds] l | |--------------+---------------------------------------------| | Example: | AT %L &W | |--------------+---------------------------------------------| | Description: | Displays signal level for reception when in | | | leased-line mode. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAXIMUM BLOCK SIZE FOR TRANSMISSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \An [cmds] | |--------------+---------------------------------------------| | Example: | AT \A3 %C1 | |--------------+---------------------------------------------| | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 COMPRESSION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -Kn [cmds] | |--------------+---------------------------------------------| | Example: | AT %C1 -K1 -Q0 | |--------------+---------------------------------------------| | Description: | Selects MNP10 data compression. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | -K0 | MNP10 disabled. | |--------------+---------------------------------------------| |>> -K1 | MNP10 enabled. | |--------------+---------------------------------------------| | -K2 | MNP10 enabled on originate mode only. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 FALL-BACK | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -Qn [cmds] | |--------------+---------------------------------------------| | Example: | AT *H0 -Q1 | |--------------+---------------------------------------------| | Description: | Allows MNP10 to fall back to speeds slower | | | than 4800bps. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | -Q0 | MNP10 at 2400 and 1200bps disabled. | |--------------+---------------------------------------------| |>> -Q1 | MNP10 at 2400 and 1200bps enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 POWER LEVEL ADJUST | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] )Mn [cmds] | |--------------+---------------------------------------------| | Example: | AT )M1 %C1 | |--------------+---------------------------------------------| | Description: | Controls automatic transmit power level | | | adjustment during MNP 10 link negotiation. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> )M0 | Power level adjustment disabled. | |--------------+---------------------------------------------| | )M1 | Power level adjustment enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP10 LINK NEGOTIATION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] *Hn [cmds] | |--------------+---------------------------------------------| | Example: | AT *H0 -Q1 | |--------------+---------------------------------------------| | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MNP STREAM/BLOCK MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Ln [cmds] | |--------------+---------------------------------------------| | Example: | AT \L1 DT555-1212 | |--------------+---------------------------------------------| | Description: | Selects the transfer mode for MNP. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| |>> \L0 | Stream mode for MNP enabled. | |--------------+---------------------------------------------| | \L1 | Block mode for MNP enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MODULATION SELECTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] +MS=xx,y,zzz,aaa [cmds] | |--------------+---------------------------------------------| | Example: | AT +MS11,1,300,28800 &W | |--------------+---------------------------------------------| | 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 103A | |--------------+---------------------------------------------| | x=69 | Bell 212A | |--------------+---------------------------------------------| | x=74 | V.FC | |--------------+---------------------------------------------| | y=1 | Auto-detect highest speed enabled. | |--------------+---------------------------------------------| | y=0 | Automode disabled. | |--------------+---------------------------------------------| | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | NEGOTIATE LINE SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Q [cmds] | |--------------+---------------------------------------------| | Example: | AT %Q &W | |--------------+---------------------------------------------| | Description: | Displays signal quality. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SLEEP TIMER | |------------------------------------------------------------| | Format | AT [cmds] S24=n [cmds] | |--------------+---------------------------------------------| | Example: | ATS24=40 | |--------------+---------------------------------------------| | Default: | 0 | |--------------+---------------------------------------------| | Range: | 0 - 255 | |--------------+---------------------------------------------| | Unit: | 1 second | |--------------+---------------------------------------------| | Description: | Maximum duration of DTE and DCE inactivity | | | allowed prior to initiating low-power sleep | | | mode. | +------------------------------------------------------------+