AT&T PARADYNE COMSPHERE 3830 Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 19.2Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Protocol AT&T V.32terbo Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis Fax Modulation Protocol ITU-T V.17, 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 PWR Green On Power is on PWR Green Off Power is off ALRM Red Blinking Internal malfunction detected ALRM Red Off Normal operation OH Green On Modem is off-hook OH Green Off Modem is on-hook DTR/108 Green On DTR signal is high DTR/108 Green Off DTR signal is low RTS/105 Green On RTS signal is high RTS/105 Green Off RTS signal is low CTS/106 Green On CTS signal is high CTS/106 Green Off CTS signal is low TXD/103 Green On Modem is transmitting data TXD/103 Green Off Modem is not transmitting data LSD/109 Green On Carrier signal detected LSD/109 Green Off Carrier signal not detected RXD/104 Green On Modem is receiving data RXD/104 Green Off Modem is not receiving data SQ Yellow On Incoming signal is degraded SQ Yellow Off Normal operation EC Green On Error correction enabled EC Green Off Error correction disabled RATE Yellow On Modem is connected at less than configured speed RATE Yellow Off Modem is connected at configured speed AT Yellow On AT command set disabled AT Yellow Off AT command set enabled AT Yellow Blinking AT command set partially enabled (see S84) Proprietary AT Command Set AT COMMAND RESPONSE Type: Register Format: AT [cmds] S84=n [cmds] Example: AT S84=0 &W Description: Sets the response to AT commands. Command Function » S84=0 Normal operation S84=1 Execute valid commands, suppress error codes. S84=2 Ignore configuration commands, always return OK error code. AUTO REDIAL Type: Register Format: AT [cmds] S37=n [cmds] Example: ATS37=6 Default: Unidentified. Unit: 1 stored number. Description: Redial from a list of stored numbers Command Function S36=0 Dial stored number 1 S36=1 Dial stored numbers 1-2. S36=2 Dial stored numbers 1-3. S36=3 Dial stored numbers 1-4. S36=4 Dial stored numbers 1-5. S36=5 Dial stored numbers 1-6 S36=6 Dial stored numbers 1-7. S36=7 Dial stored numbers 1-8. S36=8 Dial stored numbers 1-9. S36=9 Dial stored numbers 1-10. AUTO-RELIABLE FALLBACK CHARACTER Type: Configuration Format: AT [cmds] %An [cmds] Example: AT%A20 Default: 19 Range: 0-127 Unit: ASCII Description: Sets the character used as the auto-reliable fallback character. %A0 will disable this function. AUTO-RELIABLE TIME BUFFER CONFIGURATION Type: Configuration Format: AT [cmds] \Cn [cmds] Example: AT \C1 &W Description: Controls the handling of incoming data during auto-reliable time period. Command Function » \CO Data is discarded. \C1 Data is buffered. \C2 Data is discarded, resets to \C1 on receipt of autoreliable fallback character. BREAK TYPE Type: Configuration Format: AT [cmds] \Kn [cmds] Example: AT \K5 &W Description: Selects response to DTE break command. Command Function \K0 Send break, clear buffer, enter command mode. \K1 Send break, clear buffer \K2 Send break, send data, enter command mode. \K3 Send break. send data, \K4 Send data, send break, enter command mode. » \K5 Send data, send break. \K6 Disabled. BUSY OUT ON LOW DTR Type: Register Format: AT [cmds] S69=n [cmds] Example: AT S69=0 &W Description: Modem goes off hook on low DTR. Command Function » S69=0 Busy out disabled. S699=1 Busy out enabled. CALLBACK STORED NUMBER Type: Register Format: AT [cmds] S67=n [cmds] Example: AT S67=0 Description: Callback function will dial the number stored in memory location 1. Command Function » S67=0 Disabled. S67=1 Enabled. CELLULAR ENHANCEMENT Type: Register Format: AT [cmds] S91=n [cmds] Example: AT S91=0 &W Description: Adjusts profile to improve cellular performance Command Function » S91=0 Disabled. S91=1 Enabled. CD SIGNAL Type: Configuration Format: AT [cmds] &Cn [cmds] Example: AT &C3 Description: Configures the behavior of the carrier detect signal. Command Function &C0 CD forced high. » &C1 CD normal. &C2 CD forced high except during handshaking and disconnecting. &C3 CD momentary interrupt on disconect. &C4 CD follows remote RTS signal. &C5 CD Follows DTR signal. Forced low on disconnect. &C6 CD forced low on retrain of over 10 sec. Forced high after no retrain for over 10 sec. COMPRESSION Type: Configuration Format: AT [cmds] %Cn [cmds] Example: AT &B1 %C1 &I Description: Selects data compression. Command Function %C0 Data compression disabled. » %C1 Data compression 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 MNP mode only enabled. \N3 MNP mode with fallback to normal mode enabled. \N4 V.42/MNP mode only enabled. » \N5 V.42/MNP mode with fallback to normal mode enabled. CTS SIGNAL Type: Configuration Format: AT [cmds] \Dn [cmds] Example: AT \D0 Description: Selects the function of the CTS signal. Command Function » \D0 CTS forced high. \D1 CTS normal. \D2 CTS interrupted for 2 seconds on disconnect. \D3 CTS follows DTR. DIAL TYPE SELECTION Type: Configuration Format: AT [cmds] &Jn [cmds] Example: AT &J0 D555-1212 Description: Sets transmit signal level. Command Function » &J0 Permissive -9dBm &J1 Programmable DISCONNECT BUFFER DELAY Type: Register Format: AT [cmds] S39=n [cmds] Example: AT S39=0 Default: Unidentified Range: 0-255 Unit: 1 second Description: Configures how long the modem will wait to disconnect if there is data in the transmit or receive buffers. DISCONNECT IMMEDIATELY Type: Register Format: AT [cmds] S85=n [cmds] Example: AT S85=0 &W Description: Disconnect immediately on receipt of disconnect signal from DTE or diagnostic control panel. Command Function » S85=0 Disabled. S85=1 Enabled. DISCONNECT INACTIVITY Type: Register Format: AT [cmds] S80=n [cmds] Example: AT S80=3 &W Description: Sets the signal monitored by the inactivity timer (\T). Command Function S80=0 Transmit or receive. S80=1 Transmit only. S80=2 Receive only. » S80=3 Transmit and receive. DISCONNECT ON LOSS OF CURRENT Type: Register Format: AT [cmds] S65=n [cmds] Example: AT S65=0 Description: Causes the modem to disconnect if the telephone line’s current drops. Command Function » S65=0 Disconnect after 8ms if current is lost. S65=1 Disconnect after 90ms if current is lost. S65=2 Disabled DTE RATE CONTROL Type: Register Format: AT [cmds] S61=n [cmds] Example: AT S61= &W Description: Sets result of DTE CT111 rate control signal. Command Function » S61=0 Disabled. S61=-1 Fallback 1. S61=2 Fallback 2. DTR ALARM Type: Register Format: AT [cmds] S77=n [cmds] Example: AT S77=0 &W Description: Sends alarm to proprietary Series Management Controller if DTR low for 10 seconds. Command Function » S77=0 Alarm disabled. S77=1 Alarm enabled. FACTORY DEFAULTS Type: Immediate/Configuration Format: AT &Fn Example: AT &F0 Description: Loads factory defaults to NVRAM. Command Function &F0 Asynchronous dial. &F3 UNIX dial. &F5 Cellular (Mobile). Load \A4, \N4, S0=3, S7=120, S10=100, S43=1, S76=3, S89=9, S91=1. &F6 Cellular (PSTN). Load &I100, \N4, S7=120, S10=100, S43=1, S89=9, S91=1 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 TYPE Type: Configuration Format: AT [cmds] \Qn [cmds] Example: AT \Q5 Description: Sets type of flow control used by modem. Command Function \Q0 Flow control disabled. \Q1 Bidirectional XON/XOFF flow control enabled. » \Q2 CTS flow control by DCE enabled. \Q3 Bidirectional CTS/RTS flow control enabled. \Q4 XON/XOFF flow control by DCE enabled. \Q5 XON/XOFF flow control by DTE enabled. \Q6 RTS flow control by DTE enabled. HANDSHAKE OPTIONS Type: Register Format: AT [cmds] S43=n [cmds] Example: AT S43=0 Default: 0 Range: 0, 1 Description: Controls the V.32bis handshake sequence. Command Function » S43=0 V.32bis long handshake. S43=1 V.32is short handshake. INACTIVITY TIMER Type: Configuration Format: AT [cmds] \Tn [cmds] Example: AT\T20 Default: 0 Range: 0-255 Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. LAP-M FRAME SIZE4 Type: Configuration Format: AT [cmds] \An [cmds] Example: AT \A3 %C1 Description: Sets the maximum frame size for V.42 and MNP connections. Command Function \A0 Maximum frame size is 64 \A1 Maximum frame size is 128 \A2 Maximum frame size is 192 \A3 Maximum frame size is 256 \A4 Maximum frame size is 32 \A5 Maximum frame size is 16 Note: Maximum V.42 frame size is 128. LAP-M FRAME WINDOW Type: Register Format: AT [cmds] S89=n [cmds] Example: ATS89=6 Default: 0 Range: 1-9 Unit: 1 frame (beginning with 0=6 frames) Description: Sets the number of frames used in V.42 and V.42bis transmissions LEASED LINE AUTO-RETRAIN Type: Register Format: AT [cmds] S82=n [cmds] Example: AT S82=0 &W Description: Allows modem to retrain to compensate for bad line quality. Command Function » S82=0 Retrain enabled. S82=1 Retrain disabled. LEASED LINE SPEED Type: Register Format: AT [cmds] S44=n [cmds] Example: ATS44=6 Default: 18 Description: Sets maximum leased line speed Command Function S44=0 14.4Kbps V.32bis S44=1 14.4Kbps V.32bis S44=2 12.0Kbps V.32bis S44=3 9600bps V.32bis S44=4 7200bps V.32bis S44=5 4800bps V.32bis S44=6 2400bps V.22bis » S44=18 19.2Kbps V.32terbo S44=19 16.8bps V.32terbo LEASED LINE TRANSMISSION LEVEL Type: Register Format: AT [cmds] S45=n [cmds] Example: AT S45=15 Default: 0 Range: 0 - 15 Unit: 1 dBm Description: Sets the signal level for transmission when in leased line mode. LINE SPEED Type: Register Format: AT [cmds] S41=n [cmds] Example: ATS41=6 Default: 20 Description: Sets maximum line speed Command Function S41=1 14.4Kbps V.32bis S41=2 12.0Kbps V.32bis S41=3 9600bps V.32bis, V.32 S41=4 7200bps V.32bis S41=5 4800bps V.32bis, V.32 S41=6 2400bps V.22bis S41=7 1200bps V.22 S41=8 1200bps 212A S41=10 0-300bps V21 S41=11 0-300bps 103J S41=12 1200/75bps V.23 S41=13 75/1200bps V.23 » S41=20 19.2Kbps V.32terbo S41=21 16.8bps V.32terbo LOCAL ANALOG LOOPBACK Type: Register Format: AT [cmds] S52=n [cmds] Example: AT S52=0 &W Description: Modem executes local analog loopback on receipt of CT141 signal from DTE Command Function » S52=0 Loopback disabled. S52=1 Loopback enabled. LOCK SERIAL PORT Type: Register Format: AT [cmds] S90=n [cmds] Example: AT S90=0 Description: Sets operation of serial port speed. Command Function » S90=0 Disabled. S90=1 Serial speed follows connect speed. MI/MIC Type: Register Format: AT [cmds] S83=n [cmds] Example: AT S83=0 &W Description: Configures the Mode Indicate/Mode Indicate Common (MI/MIC) interface. Command Function » S83=0 Disabled. S83=1 Enabled. REMOTE CONFIGURATION Type: Register Format: AT [cmds] S55=n [cmds] Example: AT S55=0 &W Description: Allows remote configuration by 3800 series modem. Command Function » S55=0 Remote configuration enabled. S55=1 Remote configuration disabled. REMOTE DIGITAL LOOPBACK Type: Register Format: AT [cmds] S51=n [cmds] Example: AT S51=0 &W Description: Modem executes remote digital loopback on receipt of CT140 signal from DTE Command Function » S51=0 Loopback disabled. S51=1 Loopback enabled. REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Example: AT &C1 I1 B1 Description: Displays modem properties. Command Function I0 Display product code. I1 Display 3 digit firmware revision number. I2 Reports current EPROM checksum. I3 Display serial number. I4 Display model number. I5 Display hardware part number. I6 Display software part number. I9 Display 3 digit firmware revision number. I10 Changes value displayed by I0 » I10=0 Display 144 I10=1 Display 240 I10=2 Display 480 I10=3 Display 960 I10=4 Display 120 I11 Reports RAM checksum result. !19 Display complete firmware revision number. RESET MODEM TO STORED PROFILE Type: Configuration Format: AT [cmds] Zn [cmds] Example: AT Z0 Description: Restores modem profiles previously saved in non-volatile RAM using the &W command. Command Function Z0 Restore profile 0. Z1 Restore profile 1. Z2 Restore profile 2. Z3 Restore profile 3. Z9 Restore factory defaults and use them as power-on defaults. RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Example: AT X5 &W Description: Enables extended result codes, EC and V.42, MNP suffix, dial tone and busy signal detect Command Function X0 Disabled. X1 Enable extended result codes. X2 Enable extended result codes and dial tone detect. X3 Enable extended result codes and busy signal detect » X4 Enable extended result codes, dial tone detect and busy signal detect X5 Enable extended result codes, EC suffix, dial tone detect and busy signal detect X6 Enable extended result codes, V.42, MNP suffix, dial tone detect and busy signal detect X7 Display DTE rate. Enable dial tone detect and busy signal detect RJ11 CELLULAR ADAPT Type: Register Format: AT [cmds] S93=n [cmds] Example: AT S93=0 &W Description: Adds support or RJ11 connection during cellular operation Command Function » S93=0 Disabled. S93=1 Enabled. STORED PROFILE Type: Register Format: AT [cmds] S88=n [cmds] Example: AT S88=0 &W Description: Loads stored profile on disconnect. Command Function » S88=0 Disabled. S88=231 Disabled. S88=1 Enabled. S88=232 Enabled. TRANSMISSION LEVEL Type: Configuration Format: AT [cmds] &In [cmds] Example: AT &I26 &W Default: 0 Range: 10-32, 99, 100 Unit: -1 dBm Description: Sets the signal level for transmission Note: Set to 99 for autoadjust ETC1.0 specification. Set to 100 for autoadjust ETC1.1 specification V.25bis CODE SET Type: Register Format: AT [cmds] S62=n [cmds] Example: AT S62=0 &W Description: Sets coding type used in V.25bis mode. Command Function » S62=0 ASCII S62=1 EBCDIC V.25bis NEW LINE CHARACTER Type: Register Format: AT [cmds] S64=n [cmds] Example: AT S64=0 &W Description: Sets V.25 new line character. Command Function » S64=0 Carriage return and line feed. S64=1 Carriage return. S64=2 Line feed. V.32bis AUTO-RETRAIN Type: Register Format: AT [cmds] S76=n [cmds] Example: AT S76=0 &W Description: Selects action the modem will take during bad line quality on 32bis connection. Command Function » S76=0 Auto retrain enabled. S76=1 Auto retrain disabled. S76=2 Auto retrain started at 4800bps. S76=3 Auto retrain started at 9600bps V.32bis/PBX AUTOMODE Type: Register Format: AT [cmds] S78=n [cmds] Example: AT S78=0 &W Description: Selects allowed modulations. Command Function » S78=0 Use any supported modulation. S78=1 Use modulation specified in S41 S78=2 Use PBX modulation. V.42bis COMPRESSION CONTROL Type: Configuration Format: AT [cmds] "Hn [cmds] Example: AT "H3 &W Description: Controls V.42bis data compression Command Function "H0 V.42bis disabled. "H1 V.42bis when transmitting enabled. "H2 V.42bis when receiving enabled. » "H3 V.42bis when transmitting/receiving enabled. XON/XOFF PASS-THROUGH Type: Configuration Format: AT [cmds] \Xn [cmds] Example: AT \X7 O Description: Selects whether XON/XOFF signals are sent to remote modem. Command Function » \X0 XON/XOFF signals trapped by local modem. \X1 XON/XOFF passed through local modem.