3COM CORPORATION US ROBOTICS NETSERVER I-MODEM/8 Card Type Modem (asynchronous), ISDN Chip Set Unidentified Maximum Modem Rate 33.6Kbps Maximum Fax Rate 14.4Kbps Data Modulation Protocol Unidentified Fax Modulation Protocol Unidentified Error Correction/Compression Unidentified Fax Class Class I & II Data Bus External [Image] CONNECTIONS Function Label Function Label DC power CN1 RJ-45 jack channel 5/6 CN7 RJ-45 jack channel 1/2 CN3 RJ-45 auxiliary CN8 connector RJ-45 jack channel 3/4 CN4 RJ-45 console connector CN9 BNC network connector CN5 RJ-45 jack channel 7/8 CN10 RJ-45 network connector CN6 Power switch SW1 Note: CN3, CN4, CN7, CN10 jacks accept either RJ-11 or RJ-45 connectors. USER CONFIGURABLE SETTINGS Setting Label Position Load defaults from NVRAM SW1/1 Off Load defaults from ROM SW1/1 On Command odd set recognition disabled SW1/2 Off Command odd set recognition enabled SW1/2 On Factory configured - do not alter SW1/3 Unidentified Factory configured - do not alter SW1/4 Unidentified Use software configured baud rate SW2/3 Off Force DIP switch rate SW2/3 On Normal flash memory operation SW2/4 Off Erase flash memory on boot-up SW2/4 On Factory configured - do not alter SW2/5-10 Unidentified CONSOLE PORT BAUD RATE Rate SW2/1 SW2/2 9600 Off Off 19200 Off On 38400 On Off 57600 On On DIAGNOSTIC LED(S) LED Color Status Condition LED1 Off Off Power off LED1 Green On Power on LED1 Red On Critical failure LED2 Off Off Channel 1 idle LED2 Green On Channel 1 on-line LED2 Green Blinking Channel 1 testing data link layer LED2 Yellow Blinking (8 Channel 1 searching for U times/sec.) interface LED2 Yellow Blinking (1 Channel 1 searching for S/T times/sec.) interface LED2 Yellow On Channel 1 dialing LED2 Red On Channel 1 U interface not found LED2 Red Blinking Channel 1 incorrect SPID LED3 Off Off Channel 2 idle LED3 Green On Channel 2 on-line LED3 Green Blinking Channel 2 testing data link layer LED3 Yellow Blinking (8 Channel 2 searching for U times/sec.) interface LED3 Yellow Blinking (1 Channel 2 searching for S/T times/sec.) interface LED3 Yellow On Channel 2 dialing LED3 Red On Channel 2 U interface not found LED3 Red Blinking Channel 2 incorrect SPID DIAGNOSTIC LED(S) (CON’T) LED Color Status Condition LED4 Off Off Channel 3 idle LED4 Green On Channel 3 on-line LED4 Green Blinking Channel 3 testing data link layer LED4 Yellow Blinking (8 Channel 3 searching for U times/sec.) interface LED4 Yellow Blinking (1 Channel 3 searching for S/T times/sec.) interface LED4 Yellow On Channel 3 dialing LED4 Red On Channel 3 U interface not found LED4 Red Blinking Channel 3 incorrect SPID LED5 Off Off Channel 4 idle LED5 Green On Channel 4 on-line LED5 Green Blinking Channel 4 testing data link layer LED5 Yellow Blinking (8 Channel 4 searching for U times/sec.) interface LED5 Yellow Blinking (1 Channel 4 searching for S/T times/sec.) interface LED5 Yellow On Channel 4 dialing LED5 Red On Channel 4 U interface not found LED5 Red Blinking Channel 4 incorrect SPID LED6 Off Off Channel 5 idle LED6 Green On Channel 5 on-line LED6 Green Blinking Channel 5 testing data link layer LED6 Yellow Blinking (8 Channel 5 searching for U times/sec.) interface LED6 Yellow Blinking (1 Channel 5 searching for S/T times/sec.) interface LED6 Yellow On Channel 5 dialing LED6 Red On Channel 5 U interface not found LED6 Red Blinking Channel 5 incorrect SPID LED7 Off Off Channel 6 idle LED7 Green On Channel 6 on-line LED7 Green Blinking Channel 6 testing data link layer LED7 Yellow Blinking (8 Channel 6 searching for U times/sec.) interface LED7 Yellow Blinking (1 Channel 6 searching for S/T times/sec.) interface LED7 Yellow On Channel 6 dialing LED7 Red On Channel 6 U interface not found LED7 Red Blinking Channel 6 incorrect SPID LED8 Off Off Channel 7 idle LED8 Green On Channel 7 on-line LED8 Green Blinking Channel 7 testing data link layer LED8 Yellow Blinking (8 Channel 7 searching for U times/sec.) interface LED8 Yellow Blinking (1 Channel 7 searching for S/T times/sec.) interface LED8 Yellow On Channel 7 dialing LED8 Red On Channel 7 U interface not found LED8 Red Blinking Channel 7 incorrect SPID DIAGNOSTIC LED(S) (CON’T) LED Color Status Condition LED9 Off Off Channel 8 idle LED9 Green On Channel 8 on-line LED9 Green Blinking Channel 8 testing data link layer LED9 Yellow Blinking (8 Channel 8 searching for U times/sec.) interface LED9 Yellow Blinking (1 Channel 8 searching for S/T times/sec.) interface LED9 Yellow On Channel 8 dialing LED9 Red On Channel 8 U interface not found LED9 Red Blinking Channel 8 incorrect SPID LED10 Red On POST test LED10 Green Blinking (1 checking for software download times/sec.) LED10 Green Blinking (8 loading NETserver application times/sec.) into RAM LED10 Green On normal operation LED11 Red On POST LED11 Green On Erasing flash memory LED11 Amber On Programming flash memmory LED11 Off Off Normal LED12 Red On Interface failure LED12 Green On Transmitting packet LED12 Off Off Idle LED13 Red On Interface failure LED13 Green On Receiving packet LED13 Off Off Idle LED14 Red Blinking Collision (1 blink per collision) LED14 Green On 10 base-T link detected LED14 Off Off 10 base-2 link connection (If 10 base-T is being used, this indicates a bad link) LED15 Green Blinking Characters being received/transmitted through serial port LED15 Off Off Serial port idle SUPPORTED COMMAND SET Basic AT Commands AT, ‘+++’, A/ A, B, C, E, F, O, V &C, &G, &W, &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: Configuration Format: AT [cmds] #$ [cmds] Description: Display the help pannels for the octothorpe (#) command set 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 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 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 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 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 and 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 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. 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 Reverse frequencies. 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@ 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 ERROR CONTROL Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects the error control protocol Command Mode &M0 Normal mode, no error control &M1 Online synchronous mode &M4 Normal/ARQ mode, &M5 ARQ asynchronous mode &M6 V.25bis synchronous mode. &M7 V.25bis synchronous mode using HDLC link protocol 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 HARDWARE RESET Type: Immediate Format: AT [cmds] Z! [cmds] Description: If SW1/1 is on, then revert to the settings in NVRAM. If SW1/1 is off, reset to the &F0 configuration template HELP Type: Immediate Format: AT [cmds] $ Description: Display help screens for the AT basic command set Command Function &$ Display help screens for the & command set *$ Display help screens for the * command set HOOK CONTROL Type: Immediate Format: AT [cmds] Hn [cmds] Description: Selects whether the modem is on-hook or off-hook Command Function H0 Modem commanded to go on-hook (hang-up) LINE TYPE Type: Configuration Format: AT [cmds] &Ln [cmds] Description: Selects line type Command Line Type &L0 Switched line (PSTN/Dial-up) 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) 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 REPEAT LAST ISSUED COMMAND Type: Immediate Format: A> Description: Repeats last issued command until any key is pressed Note: Do not precede this command with AT, or follow it with . 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 I12 Reports ISDN settings 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 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 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 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. SOFTWARE RESET Type: Immediate Format: AT [cmds] Z [cmds] Description: If SW1/1 is set to on, revert to the settings in NVRAM. If SW1/1 is set to off, reset to the &F0 configuration template 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 TRANSMIT DATA FLOW CONTROL Type: Configuration Format: AT [cmds] &Hn [cmds] Description: Controls the transmit data flow Command Function &H0 Flow control disabled &H1 Use hardware flow control enabled &H2 Use software flow control enabled &H3 Use both hardware and software flow control enabled Extended AT Commands ASSIGN PASSWORD Type: Immediate Format: AT [cmds] %V=PWn [cmds] Description: Assign the password in account n in security account CALL TYPE Type: Configuration Format: AT [cmds] *Vn [cmds] Description: Set the call type for each B-channel Command Function *V0 0-5 for B-channel 1 *V1 0-5 for B-channel 2 DIRECTORY NUMBER Type: Configuration Format: AT [cmds] *Pn [cmds] Description: Set the directory number that was assigned to you by your telephone company Command Function *P1 The DN for B-channel 1 *P2 The DN for B-channel 2 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 accouns 0-9 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 POINT TO POINT SELECTION Type: Configuration Format: AT [cmds] *Mn [cmds] Description: Select point to point or multipoint Command Function *M0 Point to point *M1 Multipoint 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 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 SECURITY ACCOUNTS Type: Configuration Format: AT [cmds] %An [cmds] Description: Create and configure security accounts SECURITY ACCOUNTS Type: Configuration Format: AT [cmds] %Sn [cmds] Description: Access 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 SERVICE PROFILE ID Type: Configuration Format: AT [cmds] *Sn [cmds] Description: Set the service profile ID Command Function *S1 the SPID for B-channel 1 *S2 The SPID for B-channel 2 SWITCH PROTOCOL Type: Configuration Format: AT [cmds] *Wn [cmds] Description: Set the switch protocol used at the telephone company’s central office Command Jack Type *W0 AT&T 5ESS Custom *W1 Northern Telecom DMS-100 *W2 National ISDN-1 *W3 National ISDN-2 TERMINAL ENDPOINT ID Type: Configuration Format: AT [cmds] *T [cmds] Description: Sets the terminal endpoint (TEI) Command Function *T1 0-63 for B-channel 1 *T2 0-63 for B-channel 2 TONE FREQUENCIES Type: Configuration Format: AT [cmds] %Tn [cmds] Description: Enalbes recognition of the tone frequencies S(status) -REGISTERS 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 of 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 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 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 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 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 0 Disable V.42 detection and LAPM 16 Disable detection phase 5 0 Complete handshaking sequence:V.42 detection, LAPM error control, MNP 0 Disable MNP 32 Disable V.42 detection and LAPM 32 Disable detection phase 7 128 Unusual software incompatibility 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 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 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 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 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 DSR RECOGNITION Type: Register Format AT [cmds] S25=n [cmds] Default: 5 Range: Unidentified Unit: .1 second Description: Sets DTR recognition time 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. FLOW CONTROL CHARACTER - XOFF Format AT [cmds] S23=n [cmds] Default: 19 Range: Unidentified Description: Stores the ASCII code for the XOFF 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 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 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 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. 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. 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 XON CHARACTER Format AT [cmds] S22=n [cmds] Default: 17 Range: Unidentified Unit: Bit-mapped Description: Stores the ASCII code for XON character