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 Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34 Rockwell V.FC Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] 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.