3COM CORPORATION US ROBOTICS MP/8 WITH SNMP Card Type Modem (asynchronous) Chip Set Unidentified I/O Options RJ-11 jacks(8), RJ-45 jacks(10), serial port Maximum Modem Rate 33.6Kbps Maximum Fax Rate 14.4Kbps Data Modulation Protocol Bell 103/212A ITU-T V.34, V.FC, V.32terbo, V.32bis, V.32, V.25, V.23, V.22bis Fax Modulation Protocol Unidentified Error Correction/Compression MNP5, V.42, V.42bis, V.54 Fax Class Class I & II Data Bus External [Image] CONNECTIONS Function Label Function Label DC power CN1 Unidentified CN12 RJ-11 jack channel 1 CN3 Unidentified CN13 RJ-11 jack channel 2 CN4 RJ-45 channel 1 CN14 RJ-11 jack channel 3 CN5 RJ-45 channel 2 CN15 RJ-11 jack channel 4 CN6 RJ-45 channel 3 CN16 RJ-11 jack channel 5 CN7 RJ-45 channel 4 CN17 RJ-11 jack channel 6 CN8 RJ-45 channel 5 CN18 RJ-11 jack channel 7 CN9 RJ-45 channel 6 CN19 RJ-11 jack channel 8 CN10 RJ-45 channel 7 CN20 Unidentified CN11 RJ-45 channel 8 CN21 USER CONFIGURABLE SETTINGS Setting Label Position Power on SW1 On Power off SW1 Off DTR always on SW2/1 On DTR normal operation SW2/1 Off Numeric result codes SW2/2 On Verbal result codes SW2/2 Off Result codes displayed SW2/3 On Result codes suppressed SW2/3 Off Command mode local echo disabled SW2/4 On Command mode local echo enabled SW2/4 Off Auto answer disabled SW2/5 On Auto answer enabled SW2/5 Off Carrier detect always on SW2/6 On Normal carrier detect operations SW2/6 Off Result codes in originate mode only SW2/7 On Result codes in originate and answer mode SW2/7 Off Command set recognition enabled SW2/8 On Command set recognition disabled SW2/8 Off Modem maintains connection, returns to SW2/9 On command mode Modem hangs up, returns to command mode SW2/9 Off Load factory settings from ROM SW2/10 On Load factory settings from NVRAM SW2/10 Off Factory set - do not alter SW3/1 - 10 Unidentified DIAGNOSTIC LED(S) LED Color Status Condition LED1 Unidentified Unidentified Unit operating normally LED1 Unidentified Unidentified Unit not operating normally LED2 Off Off Channel 1 idle LED2 Amber Blinking (8 Channel 1 looking for U times/sec.) interface LED2 Amber Blinking (1 Channel 1 looking for times/sec.) S/T interface LED2 Amber On Channel 1 negotiating LED2 Green Blinking Channel 1 U and S/T interfaces found; waiting for line to become active LED2 Green On Channel 1 Connection OK LED2 Red On Channel 1 U interface not found LED2 Red Blinking (1 Channel 1 incorrect SPID times/sec.) LED3 Off Off Channel 2 idle LED3 Amber Blinking (8 Channel 2 looking for U times/sec.) interface LED3 Amber Blinking (1 Channel 2 looking for times/sec.) S/T interface LED3 Amber On Channel 2 negotiating LED3 Green Blinking Channel 2 U and S/T interfaces found; waiting for line to become active LED3 Green On Channel 2 Connection OK LED3 Red On Channel 2 U interface not found LED3 Red Blinking (1 Channel 2 incorrect SPID times/sec.) LED4 Off Off Channel 3 idle LED4 Amber Blinking (8 Channel 3 looking for U times/sec.) interface LED4 Amber Blinking (1 Channel 3 looking for times/sec.) S/T interface LED4 Amber On Channel 3 negotiating LED4 Green Blinking Channel 3 U and S/T interfaces found; waiting for line to become active LED4 Green On Channel 3 Connection OK LED4 Red On Channel 3 U interface not found LED4 Red Blinking (1 Channel 3 incorrect SPID times/sec.) LED5 Off Off Channel 4 idle LED5 Amber Blinking (8 Channel 4 looking for U times/sec.) interface LED5 Amber Blinking (1 Channel 4 looking for times/sec.) S/T interface LED5 Amber On Channel 4 negotiating LED5 Green Blinking Channel 4 U and S/T interfaces found; waiting for line to become active LED5 Green On Channel 4 Connection OK LED5 Red On Channel 4 U interface not found LED5 Red Blinking (1 Channel 4 incorrect SPID times/sec.) DIAGNOSTIC LED(S) (CON’T) LED Color Status Condition LED6 Off Off Channel 5 idle LED6 Amber Blinking (8 Channel 5 looking for U times/sec.) interface LED6 Amber Blinking (1 Channel 5 looking for S/T times/sec.) interface LED6 Green Blinking Channel 5 negotiating LED6 Green On Channel 5 U and S/T interfaces found; waiting for line to become active LED6 Amber On Channel 5 Connection OK LED6 Red On Channel 5 U interface not found LED6 Red Blinking (1 Channel 5 incorrect SPID times/sec.) LED7 Off Off Channel 6 idle LED7 Amber Blinking (8 Channel 6 looking for U times/sec.) interface LED7 Amber Blinking (1 Channel 6 looking for S/T times/sec.) interface LED7 Green Blinking Channel 6 U and S/T interfaces found; waiting for line to become active LED7 Green On Channel 6 Connection OK LED7 Amber On Channel 6 negotiating LED7 Red On Channel 6 U interface not found LED7 Red Blinking (1 Channel 6 incorrect SPID times/sec.) LED8 Off Off Channel 7 idle LED8 Amber Blinking (8 Channel 7 looking for U times/sec.) interface LED8 Amber Blinking (1 Channel 7 looking for S/T times/sec.) interface LED8 Green Blinking Channel 7 U and S/T interfaces found; waiting for line to become active LED8 Green On Channel 7 Connection OK LED8 Amber On Channel 7 negotiating LED8 Red On Channel 7 U interface not found LED8 Red Blinking (1 Channel 7 incorrect SPID times/sec.) LED9 Off Off Channel 8 idle LED9 Amber Blinking (8 Channel 8 looking for U times/sec.) interface LED9 Amber Blinking (1 Channel 8 looking for S/T times/sec.) interface LED9 Green Blinking Channel 8 U and S/T interfaces found; waiting for line to become active LED9 Green On Channel 8 Connection OK LED9 Amber On Channel 8 negotiating LED9 Red On Channel 8 U interface not found LED9 Red Blinking (1 Channel 8 incorrect SPID times/sec.) SUPPORTED COMMAND SET Basic AT Commands AT, ‘+++’, A/ A, B, C, E, F, H, M, O, V &C, &G, &L, &X, &Z S Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S26 Note: See MHI Help File for full command documentation. Proprietary AT Command Set HELP Type: Immediate Format: AT [cmds] $ [cmds] Description: Displays the help screen REPEAT LAST COMMAND Type: Immediate Format: AT [cmds] A> [cmds] Description: Repeat last command until canceled by pressing any key. DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] Description: Dials telephone number according to any modifiers included in the string Note: Any combination of modifiers can be used to produce the desired dial functions in sequence. Command Function DL Re-dial last number DP Pulse dialing enabled DR Answer mode enabled; originate mode disabled following handshake initiation. DS=n Dial stored telephone number n DT Tone dialing enabled/Pulse dialing disabled DW Dialing resumed following dial tone detection D, Dialing paused for amount of time specified in S8 register D"WXY" Optional method of denoting telephone numbers. Letters enclosed in quotes are interpreted as numbers according to the system found on a telephone keypad. D! Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. D@ Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. D$ Wait for prompt tone detection function enabled. Waits for prompt tone for amount of time specified by the S7 command. D; Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. D" Dial the letters that follow D/ Pause for 125 milliseconds REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports 4 digit product code I1 Reports results of ROM checksum I2 Reports results of RAM test I3 Reports the product name I4 Reports the current modem settings I5 Reports the settings stored in NVRAM I6 Reports statistics for the last call I7 Reports product configuration I10 Reports dial security account status information I11 Displays high speed connection report I15 Reports caller ID information MODEM CLOCK Type: Configuration Format: AT [cmds] Kn [cmds] Description: Controls the modem clock Command Function K0 If on-line, display current call duration; if off-line, display the last call’s duration K1 Display the actual time (set clock using ATI3=HH:MM:SS K1) SPEAKER VOLUME Type: Configuration Format: AT [cmds] Ln [cmds] Description: Controls speaker volume Command Function L0 Low volume setting L1 Low volume setting L2 Medium volume setting L3 Highest volume setting RESULT CODES Type: Configuration Format: AT [cmds] Qn [cmds] Description: Enables modem to send result codes to the DTE Command Function Q0 Result code sending enabled Q1 Result code sending disabled Q2 Suppress result codes when answering SELECT CALL PROGRESS RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Description: Enables selection of tone detection and associated result code format options Command Function X0 Busy and dial tone detection disabled; result codes 0 - 4 enabled. X1 Busy and dial tone detection disabled; result codes 0 - 5 & 10 enabled. X2 Busy tone detection disabled, dial tone detection enabled; result codes 0 - 6 & 10 enabled. X3 Busy tone detection enabled, dial tone detection disabled; result codes 0 - 5, 7 & 10 enabled. X4 Busy and dial tone detection enabled; result codes 0 - 7 & 10 enabled. X5 Busy tone detection enabled; dial tone detection disabled; all result codes enabled X6 All result codes enabled X7 Voice detection disabled; all result codes enabled RESET Type: Configuration Format: AT [cmds] &Zn [cmds] Description: Reset the modem. If SW2/10 is set to off, revert to the settings in NVRAM. If SW2/10 is set to on, reset to the &F0 configuration template. ADDITIONAL RESULT CODES Type: Configuration Format: AT [cmds] &An [cmds] Description: Controls the display of the additional result codes Command Function &A0 Do not display ARQ result codes &A1 Display ARQ result codes &A2 Display ARQ result codes, HST, V.32, V.FC or V.34 modulation indicator &A3 Display ARQ result codes and error control indicator LAPM, HST, MNP, SYNC, or NONE SERIAL PORT RATE Type: Configuration Format: AT [cmds] &Bn [cmds] Description: Controls the serial port rate Command Function &B0 Variable serial port rate &B1 Fixed serial port rate &B2 In answer mode use fixed rate for ARQ calls and variable rate for non ARQ calls. DATA TERMINAL READY (DTR) Type: Configuration Format: AT [cmds] &Dn [cmds] Description: Selects modem response to DTR Note: The action each variant of &D causes depends on the setting of &Q Command Function &D0 Modem does not respond to DTR &D1 Modem goes to command mode after DTR goes is off &D2 Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. FACTORY DEFAULT PROFILE Type: Configuration Format: AT [cmds] &F [cmds] Description: Sets values in active profile to values found in the default profile Command Function &F0 Load No Flow Control template settings &F1 Load Hardware Flow Control template settings &F2 Load Software Flow Control template settings TRANSMIT DATA FLOW CONTROL Type: Configuration Format: AT [cmds] &Hn [cmds] Description: Controls the transmit data flow Command Function &H0 Flow control disabled &H1 Hardware flow control enabled &H2 Software flow control enabled &H3 Hardware and software flow control enabled RECEIVE DATA FLOW CONTROL Type: Configuration Format: AT [cmds] &In [cmds] Description: Controls the receive data flow control Command Jack Type &I0 Disables XON/XOFF flow control &I1 Modem acts on typed XON/XOFF commands, Ctrl -S, or Ctrl -Q and passes them to remote device &I2 Modem acts on typed XON/XOFF commands but removes them from data stream &I3 Hewlett Packard host mode &I4 Hewlett Packard terminal mode &I5 Enable flow control on the phone link when the connection is not under error control DATA COMPRESSION Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Controls the data compression Command Function &K0 Data compression disabled &K1 Use auto enable/disable data compression &K2 Data compression always enabled &K3 Selective data compression ERROR CONTROL Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects the error control protocol Command Mode &M0 Normal mode, no error control &M4 Normal/ARQ mode &M5 ARQ asynchronous mode &M6 V.25bis synchronous mode CONNECTION RATE Type: Configuration Format: AT [cmds] &Nn [cmds] Description: Controls the connection rate Command Function &N0 Variable rate &N1 300bps &N2 1200bps &N3 2400bps &N4 4800bps &N5 7200bps &N6 9600bps &N7 12Kbps &N8 14.4Kbps &N9 16.8Kbps &N10 19.2Kbps &N11 21.6Kbps &N12 24Kbps &N13 26.4Kbps &N14 28.8Kbps &N15 31.2Kbps &N16 33.6Kbps PULSE DIALING RATIO Type: Configuration Format: AT [cmds] &Pn [cmds] Description: Selects pulse dial make/break ratio Command Function &P0 39/61ms at 10pps (North America) &P1 33/67ms at 10pps (Europe) RTS/CTS Type: Configuration Format: AT [cmds] &Rn [cmds] Description: Selects RTS/CTS options Command Function &R0 CTS follows RTS in data mode; RTS is ignored in command mode. &R1 CTS forced high, RTS is ignored. &R2 Enable hardware flow control of received data DATA SET READY (DSR) Type: Configuration Format: AT [cmds] &Sn [cmds] Description: Selects DSR options Command Function &S0 DSR forced high &S1 DSR high only while modem is handshaking or connected &S2 DSR & CTS follows CD when carrier is lost &S3 DSR follows CD when carrier is lost &S4 Send the computer a DSR signal at the same time as the CD &S5 Send DSR normally, and follow CTS with CD TEST MODES Type: Immediate Format: AT [cmds] &Tn Description: Selects test options Command Function &T0 End current test &T3 Begin local digital loopback &T4 Grant remote digital loopback request &T5 Deny remote digital loopback request &T6 Request remote digital loopback &T7 Request remote digital loopback and self-test STORE ACTIVE PROFILE Type: Configuration Format: AT [cmds] &Wn [cmds] Description: Writes the values for the active profile into the non-volatile RAM BREAK HANDLING Type: Configuration Format: AT [cmds] &Yn [cmds] Description: Controls the break handling Command Function &Y0 Destructive, don’t send break &Y1 Destructive, expedited break sent &Y2 Nondestructive, expedited break sent &Y3 Nondestructive, un-expedited break sent STORE COMMAND STRING Type: Configuration Format: AT [cmds] &ZCn=(phone # & modifiers) Description: Writes selected command string into the non-volatile memory at location n Note: The command string can be up to 30 characters long; spaces do not count. SECURITY ACCOUNTS Type: Configuration Format: AT [cmds] %An [cmds] Description: Create and configure security accounts SERIAL PORT RATE Type: Configuration Format: AT [cmds] %Bn [cmds] Description: Remotely configure a modem’s serial port rate Command Function %B0 110bps %B1 300bps %B2 600bps %B3 1200bps %B4 2400bps %B5 4800bps %B6 9600bps %B7 19200bps %B8 38400bps %B9 57600bps %B10 115200bps REMOTE CONFIGURATION Type: Configuration Format: AT [cmds] %Cn [cmds] Description: Controls the remote configuration Command Function %C0 Defer configuration changes until the call is ended %C1 Cancel configuration changes and restore the original configuration %C2 Force configuration changes to take effect immediately ERASE SECURITY SETTINGS Type: Configuration Format: AT [cmds] %En [cmds] Description: Erases selected security settings Command Function %E1 Erase local access password %E2 Erase autopass password %E3 Erase passwords in accounts 0-9 %E4 Erase phone numbers in accounts 0-9 %E5 Disable account, dialback, and new number fields in accounts 0-9 REMOTE CONFIGURATION Type: Configuration Format: AT [cmds] %Fn [cmds] Description: Configure another device’s data remotely Command Function %F0 No parity, 8 data bits %F1 Mark parity, 7 data bits %F2 Odd parity, 7 data bits %F3 Even parity, 7 data bits LOCAL ACCESS PASSWORD Type: Configuration Format: AT [cmds] %Ln [cmds] Description: Set local access password PASSWORD SECURITY Type: Immediate Format: AT [cmds] %P [cmds] Description: Disable password security SECURITY ACCOUNTS Type: Configuration Format: AT [cmds] %Sn [cmds] Description: Access security accounts TONE FREQUENCIES Type: Configuration Format: AT [cmds] %Tn [cmds] Description: Enalbes recognition of the tone frequencies ASSIGN PASSWORD Type: Immediate Format: AT [cmds] %V=PWn [cmds] Description: Assign the password in account n in security account as autopass password HELP Type: Configuration Format: AT [cmds] #$ [cmds] Description: Display the help pannels for the octothorpe (#) command set 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 displays formatted data #CID=2 Caller ID displays raw hexadecimal data #CID=3 Enable caller ID with formatted output and name suppressed #CID=4 Enable caller ID but do not transmit the information to computer S(status) -REGISTERS BIT-MAPPED REGISTER S13 Format: AT [cmds] S13=n [cmds] Default: 170 Range: 0-174 Unit: Bit-mapped Description: Controls echo, result codes and display, dial mode, and answer/originate mode. Bit Value Function 0 1 Reset when DTR drops 1 2 Reverse normal auto answer mode 2 4 Disable 250 msec pause before result code display 3 8 On DTR signal, Autodial the number stored in NVRAM at position 0 4 16 At power on/reset, auto dial number stored in NVRAM at position 0 5 32 Disable HST 6 64 Disable MNP level 3 7 128 Hardware reset BIT-MAPPED REGISTER S14 Format: AT [cmds] S14=n [cmds] Default: 170 Range: 0-174 Unit: Bit-mapped Description: Controls echo, result codes and display, dial mode, and answer/originate mode. Bit Value Function 0 1 Disconnect on escape code 1 2 Send result codes only when originating a call BIT MAPPED REGISTER Type: Register Format: AT [cmds] S15=n [cmds] Unit: Bit-mapped Description: Controls fallback Bit Value Function 0 1 Disable the modem’s extra high frequency equalization if it causes problems on shorter -link calls- for HST modulation only 1 2 Disable online fallback 2 4 Disable 450bps back channel ---HST only 3 8 Reset non-ARQ mode transmit buffer from 1.5Kbytes to 128 4 16 Disable MNP level 4 5 32 Set backspace key to delete 6 64 Alternate MNP setting for some 2400bps MNP modems not made by U.S. Robotics or Microcom. 7 128 Custom applications only BIT MAPPED REGISTER S16 Type: Register Format: AT [cmds] S16=n [cmds] Unit: Bit-mapped Description: Controls loopback tests and test pattern Bit Value Function 2 4 Test pattern 3 8 Remote digital loopback INACTIVITY TIMER Type: Register Format AT [cmds] S19=n [cmds] Default: Unidentified Range: Unidentified Unit: Minute Description: Sets the duration in minutes for the inactivity timer, S19=0 disables the timer BREAK LENGTH Format AT [cmds] S21=n [cmds] Default: Unidentified Range: Unidentified Unit: 10msec Description: Sets the duration of breaks sent from the modem to the computer or terminal XON CHARACTER Format AT [cmds] S22=n [cmds] Default: 17 Range: Unidentified Unit: ASCII Description: Stores the ASCII code for XON character FLOW CONTROL CHARACTER - XOFF Format AT [cmds] S23=n [cmds] Default: 19 Range: Unidentified Unit: ASCII Description: Stores the ASCII code for the XOFF character DSR SIGNAL Type: Register Format AT [cmds] S24=n [cmds] Default: 150 Range: Unidentified Unit: .02 sec Description: Sets the duration between pulsed DSR signals when the modem is set to &S2 or &S3. DSR RECOGNITION Type: Register Format AT [cmds] S25=n [cmds] Default: 5 Range: Unidentified Unit: .1 second Description: Sets DTR recognition time BITMAPPED REGISTER S27 Format AT [cmds] S27=n [cmds] Default: Unidentified Range: 0 Unit: Bit-mapped Description: Selects modulation Bit Value Function 0 1 Enable ITU-T V.21 1 2 Enable unencoded modulation in V.32 mode 2 4 Disable V.32 modulation 3 8 Disabl;e 2100Hz answer tone 4 0 Complete handshaking sequence:V.42 detection, LAPM error control, MNP 16 Disable MNP 32 Disable V.42 detection and LAPM 48 Disable detection phase 5 0 Complete handshaking sequence:V.42 detection, LAPM error control, MNP 16 Disable MNP 32 Disable V.42 detection and LAPM 48 Disable detection phase 7 128 Unusual software incompatibility BIT-MAPPED REGISTER S28 Format AT [cmds] S28=n [cmds] Default: Unidentified Range: 8 Unit: .1 second Description: Sets the duration of the extra 3000/600 Hz answer tones sent during handshaking. BITMAPPED REGISTER S29 Type: Register Format AT [cmds] S29=n [cmds] Default: 20 Range: Unidentified Unit: .1 sec Description: Sets the duration of the V.21 answer tone VOICE/DATA SWITCH Type: Register Format AT [cmds] S32=n [cmds] Default: 9 Range: Unidentified Unit: Unidentified Description: Assign voice/data switch function Value Function 0 Disabled 1 Voice/data - originate mode 2 Voice/data - answer mode 3 Radial last number 4 Dial number stored at position 0 5 Auto answer on/off toggle 6 Reset modem 7 Initiate remote digital loopback 8 Busy out the phone line toggle 9 Execute stored command BIT-MAPPED REGISTER S34 Type: Register Format: AT [cmds] S34n [cmds] Default: 0 Range: Unidentified Unit: Unidentified Description: Controls V.32bis Bit Value Function 0 1 Disable V.32bis 1 2 Disable modem’s enhanced proprietary V.32bis modulation 2 4 Disable the faster retrains that occure during proprietary V.32terbo modulation 3 8 Enable V.23 4 16 Force the MR LED to show DSR 5 32 Enable MI/MIC 6 64 Disable the remote access busy message 7 128 Disable V.32terbo TRANSMIT BUFFER Type: Register Format AT [cmds] S38n [cmds] Description: Sets the time before a forced hang up and clearing of the transmit buffer when DTR drops during an ARQ call. REMOTE ACCESS Type: Register Format AT [cmds] S41=n [cmds] Description: Sets the number of allowable remote access login attempts, thus enabling or disabling remote access. REMOTE ACCESS ESCAPE CHARACTER Type: Register Format AT [cmds] S42=n [cmds] Default: 126 Range: Unidentified Unit: Unidentified Description: Stores the ASCII decimal code for the remote access escape character. GUARD TIME DURATION Type: Register Format AT [cmds] S43=n [cmds] Default: 200 Unit: .02 sec Description: Sets the duration of the guard time for the remote access sequence REESTABLISHING CONNECTION INTERVAL Format AT [cmds] S44=n [cmds] Default: 15 Description: Sets the duration of the interval between losing carrier and reestablishing a connection BIT-MAPPED REGISTER S51 Format AT [cmds] S51=n [cmds] Default: 0 Range: Unidentified Unit: Bit-mapped Description: MNP/V.42 control Bit Value Function 0 1 Disable MNP/V.42 for V.22 1 2 Disable MNP/V.42 for V.22bis 2 4 Disable MNP/V.42 for V.32/V.32bis/V.32terbo 6 64 Disable selective reject 7 128 Enable handset exclusion delay BIT MAPPED REGISTER S53 Type: Register Format: AT [cmds] S53=n [cmds] Description: Bit mapped register Bit Value Function 0 1 Dial security enabled 1 2 Prompting enabled 2 4 Local access password protection enabled BIT MAPPED REGISTER S54 Type: Register Format: AT [cmds] S54=n [cmds] Description: Bit mapped register Bit Value Function 0 1 Disable 2400 symbol rate 1 2 Disable 2743 symbol rate 2 4 Disable 2800 symbol rate 3 8 Disable 3000 symbol rate 4 16 Disable 3200 symbol rate 5 32 Disable 3429 symbol rate 6 64 Disable Call Indicate 7 128 Disable V.8 BIT-MAPPED REGISTER S55 Type: Register Format AT [cmds] S55=n [cmds] Description: Bit-mapped register Bit Value Function 0 1 Disable 8S-2D mapping 1 2 Disable 16S-4D mapping 2 4 Disable 32S-2D mapping 3 8 Disable 64S-4D mapping 7 128 Enable phase roll detection BIT-MAPPED REGISTER S56 Type: Register Format AT [cmds] S56 [cmds] Description: Bit-mapped register Bit Value Function 0 1 Disable non-linear coding 1 2 Disable TX level deviation 2 4 Disable pre-emphasis 3 8 Disable precoding 4 16 Disable shaping 5 32 Disable 31.2 and 33.6 speeds in V.34 6 64 Disable V.34 7 128 Disable V.FC BIT-MAPPED REGISTER S69 Type: Register Format: AT [cmds] S69=n [cmds] Description: Bit-mapped register Bit Value Function 0 1 Disable plug and play signaling 1 2 Enable carrier loss redial BIT-MAPPED REGISTER S70 Type Register or Configuration Format AT [cmds] S70=n [cmds] Description Bit-mapped register Bit Value Function 0 1 Enable recognition of Ring A 1 2 Enable recognition of Ring B 2 4 Enable recognition of Ring C 3 8 Enable recognition of Ring D