ZYXEL COMMUNICATIONS CORPORATION ELITE 2864L Card Type Modem (synchronous/asynchronous) Chipset Siemens-Nixdorf Maximum Modem Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Bus Serial/Parallel Fax Class Class I & II Modem Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.23, V.26bis, V.27bis, V.29, V.32, V.32bis, V.33, V.34 ZyXEL ZyX19200, ZyX16800, ZyCELL cellular Fax Modulation Protocol ITU-T V.17, V.21CH2, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Function Label Function Label RS-232/422 port CN1 Parallel port CN5 Switched line out CN2 Data/voice switch BT1 Leased line out CN3 Originate/answer switch BT2 DC power CN4 DRAM Size Bank 0 Bank 1 4MB (2) 4M x 4 None 8MB (2) 4M x 4 (2) 4M x 4 DIAGNOSTIC LED(S) LED Color Status Condition PWR Red On Power is on PWR Red Off Power is off TST Red On Modem is in test mode TST Red Off Modem is not in test mode FAX Red On Modem is connected in fax mode FAX Red Off Modem is not connected in fax mode LL Red On Modem is connected on leased line LL Red Off Modem is not connected on leased line SP Red On Modem is communicating over serial port SP Red Off Modem is not communicating over serial port PRP Red On Modem is printing over parallel port PRP Red Off Modem is not printing over parallel port PCP Red On Modem is communicating over parallel port PCP Red Off Modem is not communicating over parallel port V34 Status V32b Condition Status Off Off Modem is operating with a modulation earlier than V.32 Off On Modem is operating with V.32bis or V.32 modulation On Off Modem is operating with V.34 modulation On On Modem is operating with ZyXEL proprietary modulation 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 LED Color Status Terminal Mode Printer Mode DTR/POL Red On DTR signal is Printer is on-line high DTR/POL Red Off DTR signal is Printer is off-line low DSR/PSL Red On DSR signal is Printer is ready high for input DSR/PSL Red Off DSR signal is Printer is not low ready for input RTS/PPE Red On RTS signal is Printer is out of high paper RTS/PPE Red Off RTS signal is Printer is not low out of paper CTS/PER Red On CTS signal is Printer has high encountered an error CTS/PER Red Off CTS signal is Printer has not low encountered an error TXD Red On Modem is transmitting data TXD Red Off Modem is not transmitting data RXD Red On Modem is receiving data RXD Red Off Modem is not receiving data EC Red On Error correction enabled EC Red Off Error correction disabled EC Red Blinking Modem is retransmitting data DIAGNOSTIC LED(S) (CON’T) LED Color Status Condition SQ Red On Signal quality is good SQ Red Blinking Signal quality is poor OH Red On Modem is off-hook OH Red Off Modem is on-hook ORG Red On Modem is in originate mode ORG Red Off Modem is in answer mode Proprietary AT Command Set BIT-MAPPED REGISTER S14 Format: AT [cmds] S14=n [cmds] Default: 2 Range: 0 - 255 Unit: Bit-mapped Description: Controls sync/async, clock source, line type, loopback test request, and leased line mode. Bit Value Function 0 0 Originate mode in leased line operation. 1 Answer mode in leased line operation. 1 0 Grant request for remote digital loopback test. 1 Deny request for remote digital loopback test. 3, 2 00 Switched line type. 01 Two-wire leased line type. 10 Four-wire leased line type. 5, 4 00 Clock signal local internal. 01 Clock signal local external. 10 Clock signal remote. 7, 6 00 Buffered asynchronous mode. 01 Asynchronous while in command mode, switch to synchronous while in data mode. 10 Unbuffered asynchronous mode. 11 Synchronous mode. BIT-MAPPED REGISTER S15 Format: AT [cmds] S15=n [cmds] Default: 130 Range: 0 - 158 Unit: Bit-mapped Description: Controls active profile and data format. Bit Value Function 1, 0 00 Use even parity. 01 Use odd parity. 10 Do not use parity. 2 0 Use 1 stop bit. 1 Use 2 stop bit. 4, 3 00 Use 10-bit characters. 01 Use 11-bit characters. 10 Use 9-bit characters. 11 Use 8-bit characters. 7, 6, 5 000 Profile 0 active at power-up. 001 Profile 1 active at power-up. 010 Profile 2 active at power-up. 011 Profile 3 active at power-up. 100 Factory defaults active at power-up. BIT-MAPPED REGISTER S17 Format: AT [cmds] S17=n [cmds] Default: 18 Range: 0 - 191 Unit: Bit-mapped Description: Controls command set type, dialing mode, leased line transmit attenuation, and secondary networking channel. Bit Value Function 0 0 Secondary channel disabled. 1 Secondary channel enabled. 4 - 1 0000 Sets leased line transmit attenuation level to 0dBm. ... ... 1001 Sets leased line transmit attenuation level to ... -9dBm. 1111 ... Sets leased line transmit attenuation level to -15dBm. 5 0 Originate mode. 1 Answer mode. 7, 6 00 AT command set enabled. 01 V25bis command set enabled. 10 Command sets disabled. BIT-MAPPED REGISTER S21 Format: AT [cmds] S21=n [cmds] Default: 178 Range: 0 - 255 Unit: Bit-mapped Description: Controls DTR, CTS, CD, and DSR signals, speaker, and error correction. Bit Value Function 0 0 Attempt an error-correcting connection. If that fails, attempt a normal connection. 1 Attempt an error-correcting connection. If that fails, hang up. 2, 1 00 Speaker disabled. 01 Speaker enabled until carrier signal detected 10 Speaker enabled. 11 Speaker enabled following dialing, then disabled after carrier signal detected. 3 0 DSR forced high. 1 DSR normal. 4 0 CD forced high. 1 CD normal. 5 0 CTS follows RTS when in synchronous mode. 1 CTS forced high when in synchronous mode. 7, 6 00 DTR is forced on. 01 Dial default number on high DTR; hang up on low DTR. 10 Low DTR hangs up and returns to command mode. 11 Low DTR hangs up and resets the modem to profile 0. BIT-MAPPED REGISTER S23 Format: AT [cmds] S23=n [cmds] Default: 105 Range: 0 - 255 Unit: Bit-mapped Description: Controls result codes, dialing, and echo. Bit Value Function 0 0 Command echoing disabled. 1 Command echoing enabled. 1 0 Not used. 2 0 Select pulse dial make/break ratio of 39/61ms at 10pps (North America). 1 Select pulse dial make/break ratio of 33/67ms at 10pps (Europe). 5, 4, 3 000 Basic result codes only enabled. 001 Basic and connection speed result codes enabled. 010 Basic and connection speed result codes and dialtone detection enabled. 011 All result codes except dialtone detection 100 enabled. 101 All result codes enabled. 110 All result codes plus DTE speed and error control level enabled. 111 All result codes plus ARQ enabled. All result codes plus ARQ and error control level enabled. 6 0 Display result codes in numeric form. 1 Display result codes in long form. 7 0 Result codes enabled. 1 Result codes disabled. BIT-MAPPED REGISTER S24 Format: AT [cmds] S24=n [cmds] Default: 138 Range: 0 - 238 Unit: Bit-mapped Description: Controls speaker volume and ring volume. Bit Value Function 0 0 Not used. 3, 2, 1 000 Ring volume off. 001 Ring volume low. 100 ... 111 Ring volume medium. ... Ring volume high. 4 0 Not used. 7, 6, 5 000 Speaker volume off. 001 Speaker volume low. 100 ... 101 Speaker volume medium. 111 ... Speaker volume high. BIT-MAPPED REGISTER S27 Format: AT [cmds] S27=n [cmds] Default: 156 Range: 0 - 228 Unit: Bit-mapped Description: Controls reaction to poor signal quality, flow control, and error correction. Bit Value Function 2, 1, 0 000 Error correction disabled for fax/modem. 001 MNP4 enabled for fax/modem. 010 MNP5 enabled for fax/modem. 011 V.42 and MNP4 enabled for fax/modem. 100 V.42bis and MNP5 enabled for fax/modem. 5, 4, 3 000 Flow control disabled. 011 Hardware flow control enabled. 100 Software flow control enabled. 7, 6 00 Modem does nothing during poor signal quality. 01 Modem retrains during poor signal quality. 10 Modem fall-back during poor signal quality, and fall-forward when signal improves. 11 Modem will disconnect during poor signal quality. BIT-MAPPED REGISTER S28 Format: AT [cmds] S28=n [cmds] Default: 68 Range: 0 - 235 Unit: Bit-mapped Description: Controls front panel lock, break type, guard tone, local serial port speed lock, and 1200bps protocol. Bit Value Function 0 0 Not used. 1 0 Panel key unlocked. 1 Panel key locked. 3, 2 00 Destructive break sent ahead of data stream. 01 Non-destructive break sent ahead of data stream. 10 Non-destructive break sent at end of data stream. 5, 4 00 Guard tone disabled. 10 Guard tone enabled. 6 0 Local serial port speed follows connect speed. 1 Local serial port speed locked. 7 0 Sets V.22 as 1200bps protocol. 1 Sets Bell 212/A as 1200bps protocol. BIT-MAPPED REGISTER S35 Format: AT [cmds] S35=n [cmds] Default: 32 Range: 0 - 255 Unit: Bit-mapped Description: Controls 4800bps V.32, handshake interruption, V.26bis mode, leased line transmission attenuation, Selective Reject, password protection, and extended result codes. Bit Value Function 0 0 4800bps V.32 normal. 1 Use ZyCELL 4800bps trellis coded instead of 4800bps V.32. 1 0 Handshake can be interrupted. 1 Handshake cannot be interrupted. 2 0 V.26bis normal. 1 V.26bis mode A. 3 0 Leased line transmission level normal. 1 Leased line transmission is attenuated by -12dBm. 4 0 Modem will not dial default number when Data/Voice button is pressed 1 Modem will dial default number when Data/Voice button is pressed 5 0 V.42 Selective Reject disabled. 1 V.42 Selective Reject enabled. 6 0 Profile password protection disabled. 1 Profile password protection enabled. 7 0 Connection speed result codes disabled on error correcting connection. 1 Connection speed result codes enabled on error correcting connection. BIT-MAPPED REGISTER S36 Format: AT [cmds] S36=n [cmds] Default: 0 Range: 0 - 163 Unit: Bit-mapped Description: Controls security and remote profiles. Bit Value Function 0 0 Deny remote request for current configuration. 1 Grant remote request for current configuration. 1 0 Copies local profile to remote profile. Profiles set with S37. 1 Copies remote profile to local profile. Profiles set with S37. 4-2 000 Not used. 7, 6, 5 000 Security disabled. 001 Security type I and password check enabled. 010 Security type I, callback, and password check enabled. 011 Security type II and password check enabled. 100 Security type II, callback, and password check 101 enabled. Security type II, callback, and password check enabled. Callback number sent by remote. BIT-MAPPED REGISTER S38 Format: AT [cmds] S38=n [cmds] Default: 0 Range: 0 - 57 Unit: Bit-mapped Description: Controls auto-dial, CD signal, fax auto-answer, and MNP5. Bit Value Function 0 0 Auto-dial of default number disabled. 1 Auto-dial of default number enabled. 2-1 00 Not used. 3 0 CD normal. 1 CD according to UNIX standard. 4 0 Fax auto-answer enabled. 1 Fax auto-answer disabled. 5 0 MNP5 enabled. 1 MNP5 disabled. BIT-MAPPED REGISTER S39 Format: AT [cmds] S39=n [cmds] Default: 0 Range: 0 - 252 Unit: Bit-mapped Description: Controls answer mode, Class 2 fax modes, V.26bis scrambler, DTMF detection, and resync info. Bit Value Function 1-0 00 Not used. 2 0 Answer in answer mode. 1 Answer in originate mode. 3 0 Normal Class 2 fax. 1 Bitfax-compatible Class 2 fax. 4 0 Normal Class 2 fax. 1 Local serial port speed shift for Class 2 fax. 5 0 V.26bis scrambler enabled. 1 V.26bis scrambler disabled. 6 0 DTMF detection in voice mode only. 1 DTMF detection on AT+VLS=2 command. 7 0 Resync information not included in ADPCM voice file. 1 Resync information included in ADPCM voice file. BIT-MAPPED REGISTER S40 Format: AT [cmds] S40=n [cmds] Default: 0 Range: 0 - 126 Unit: Bit-mapped Description: Controls extended ring detection and result codes. Bit Value Function 0 0 Not used. 1 0 Modem returns result codes. 1 Modem does not return result codes. 2 0 Caller ID disabled. 1 Caller ID enabled. 3 0 Ring type 1 detection disabled. 1 Ring type 1 detection enabled. 4 0 Ring type 2 detection disabled. 1 Ring type 2 detection enabled. 5 0 Ring type 3 detection disabled. 1 Ring type 3 detection enabled. 6 0 Ring type 4 detection disabled. 1 Ring type 4 detection enabled. 7 0 Not used. BIT-MAPPED REGISTER S41 Format: AT [cmds] S41=n [cmds] Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Controls MNP compatibility mode, V.25bis idle, retrain timeout, loopback tests, blind dial time, DSR signal, S0 register, and calling tone. Bit Value Function 0 0 MNP compatibility mode disabled. 1 MNP compatibility mode enabled. 1 0 Use flag for V.25bis idle. 1 Use mark for V.25bis idle. 2 0 Retrain timeout normal. 1 Retrain timeout set to 5 minutes. 3 0 Loopback test signals disabled. 1 Loopback test signals enabled. 4 0 Modem waits for dial tone before dialing. 1 Modem waits for time set in S6 and then blind-dials. 5 0 DSR normal. 1 DSR follows CD and goes low for 1/2 second on loss of carrier. 6 0 Register S0 behaves normally. 1 Force S0 to be greater than 2. 7 0 Respond to calling tone. 1 Ignore calling tone. BIT-MAPPED REGISTER S42 Format: AT [cmds] S42=n [cmds] Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Controls secondary channel speed, throughput averaging, Caller ID display, escape sequence, V.17 mode, data/voice switch, and CD signal. Bit Value Function 0 0 Secondary channel 2400/75bps. 1 Secondary channel 2400bps. 1 0 Throughput averaging disabled. 1 Throughput averaging enabled. 2 0 Caller ID information will be displayed even if ATQ2 is set. 1 Caller ID information will not be displayed if ATQ2 is set. 3 0 Escape sequence enabled in answer mode. 1 Escape sequence disabled in answer mode. 4 0 V.17 enabled. 1 Disable V.17 in originate mode. 5 0 Data/Voice switch enabled. 1 Data/Voice switch disabled. 6 0 Enable RING result. 1 Disable RING result. 7 0 CD forced high. 1 CD pulses off at carrier loss. BIT-MAPPED REGISTER S44 Format: AT [cmds] S44=n [cmds] Default: 0 Range: 0 - 124 Unit: Bit-mapped Description: Bit Value Function 1-0 00 Not used. 2 0 Dial backup executed automatically. 1 Dial backup waits for panel input. 3 0 Cyclic dial disabled. 1 Cyclic dial enabled. 4 0 DSR normal. 1 DSR follows DTR. 5 0 V.13 simulation disabled. 1 V.13 simulation enabled. 6 0 &B0 Local serial port speed determined normally. 1 &B1 Local serial port is locked at 19.2Kbps if link is 9600bps or faster, at 9600bps if link is 7200bps, and else at link speed. Local serial port locked if ARQ link, and follows link speed otherwise. BIT-MAPPED REGISTER S48 Format: AT [cmds] S48=n [cmds] Default: 0 Range: 0 - 61 Unit: Bit-mapped Description: Controls caller ID format, call answering, calling tone, V.23 speed, DTR change action, and protocol negotiation. Bit Value Function 0 0 Caller ID displayed normally. 1 Caller ID displayed as raw data. 1 0 Answer all incoming calls. 1 Answer data calls only. 2 0 Calling tone disabled. 1 Calling tone enabled. 3 0 V.23 speed set to 1200/75. 1 V.23 speed set to 75/1200. 4 0 Modem does nothing on DTR change. 1 Modem will dial default number on high DTR and disconnect and reset on low DTR. 5 0 Modem will negotiate all protocols. 1 Modem will not negotiate protocols faster than 9600bps. BIT-MAPPED REGISTER S52 Format: AT [cmds] S52=n [cmds] Default: 0 Range: 0 - 144 Unit: Bit-mapped Description: Controls received signal level and initial V.23 handshake signal. Bit Value Function 2-0 000 Not used. 4, 3 00 Adjust received signal to -43dBm. 01 Adjust received signal to -33dBm. 10 Adjust received signal to -26dBm. 6-5 00 Not used. 7 0 First signal of V.23 handshake is Mark. 1 First signal of V.23 handshake is Space. BIT-MAPPED REGISTER S57 Format: AT [cmds] S57=n [cmds] Default: 16 Range: 0 - 80 Unit: Bit-mapped Description: Controls fax class 1 and busy detection during dialing. Bit Value Function 3-0 0000 Not used. 4 0 Fax class 1 disabled. 1 Fax class 1 enabled. 5 0 Not used. 6 0 Busy detection disabled during dialing. 1 Busy detection enabled during dialing. BIT-MAPPED REGISTER S84 Format: AT [cmds] S84=n [cmds] Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Controls register value format, caller ID information reporting, and serial port mode. Bit Value Function 2-0 000 Not used. 3 0 Display register values in decimal. 1 Display register values in hexadecimal. 4 0 Caller ID information display enabled. 1 Caller ID information display disabled. 6-5 00 Not used. 7 0 Serial port in single-stream mode. 1 Serial port in multistream mode. BREAK TYPE Type: Configuration Format: AT [cmds] &Yn [cmds] Description: Configures action of break signal. Command Function &Y0 Break empties buffer and is sent immediately. &Y1 Break does not empty buffer and is sent immediately. &Y2 Break does not empty buffer and is sent in data stream. CALLBACK NUMBER DISPLAY Type: Immediate Format: AT [cmds] *VC [cmds] Description: Displays the table of callback numbers. Note: The supervisor password must be entered to execute this command. CALLER ID INFORMATION Type: Immediate Format: AT [cmds] *T [cmds] Description: Displays the last caller ID information. CALLER ID SILENCE DELAY Type: Register Format: AT [cmds] S45=n [cmds] Default: 87 Range: 0-255 Unit: 20ms Description: Time period in which Caller ID silence detection is disabled. CALLER ID SILENCE DETECTION Type: Register Format: AT [cmds] S46=n [cmds] Default: 3 Range: 0-255 Unit: 20ms Description: Time period for which silence must be detected for Called ID information to be processed. CELLULAR MODE Format: AT [cmds] S49=n [cmds] Default: 9 Range: 0 - 255 Unit: Bit-mapped Description: Controls cellular transmission attenuation and cellular function. Bit Value Function 3 - 0 0000 Sets cellular transmit attenuation level to -9dBm. ... ... 1001 Sets cellular transmit attenuation level to -18dBm. ... ... 1111 Sets cellular transmit attenuation level to -24dBm. 6-4 000 Not used. 7 0 Cellular mode over phone lines. 1 Cellular mode through cellular phone. CHARACTER LENGTH Type: Configuration Format: AT [cmds] *Cn [cmds] Description: Sets length of character. Command Function *C0 Set 10-bit character. *C1 Set 11-bit character. *C2 Set 9-bit character. *C3 Set 8-bit character. COMMAND MODE TYPE Type: Configuration Format: AT [cmds] *In [cmds] Description: Selects the command set the modem will use. Command Function *I0 AT command set enabled. *I1 V.25bis command set enabled. *I2 Dumb terminal mode, all command sets disabled. Note: To leave dumb terminal mode, front panel menu must be used. COMPRESSION AND ERROR CORRECTION MODE Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Selects the type of error correction and data compression used. Command Function &K0 Error correction and compression disabled for switched-line calls. &K1 MNP4 enabled for switched-line calls. &K2 MNP5 enabled for switched-line calls. &K3 V.42 and MNP4 enabled for switched-line calls. &K4 V.42bis and MNP5 enabled for switched-line calls. CONFIGURATION PROFILES Type: Immediate Format: AT [cmds] &Vn [cmds] Description: Displays active and stored configuration profiles. Command Function &V0 Displays current settings. &V1 Displays profile 0. &V2 Displays profile 1. &V3 Displays profile 2. &V4 Displays profile 3. &V5 Displays factory defaults. DEFAULT FALLBACK PHONE NUMBER Type: Register Format: AT [cmds] S30=n [cmds] Default: 0 Range: 0-39 Unit: N/A Description: Sets the default phone number the phone will dial when leased line goes down to memory location n. Setting S30 to 0 will disable this feature. DEFAULT PHONE NUMBER Type: Configuration Format: AT [cmds] *Dn [cmds] Default: 0 Range: 0-39 Unit: N/A Description: Sets the default phone number to memory location n. DEFAULT PHONE NUMBER Type: Register Format: AT [cmds] S29=n [cmds] Default: 0 Range: 0-39 Unit: N/A Description: Sets the default phone number to memory location n. DES ENCRYPTION Format: AT [cmds] S89=n [cmds] Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Controls DES encryption settings. Bit Value Function 0 0 DES encryption disabled. 1 DES encryption enabled. 1 0 Attempt single DES only. 1 Attempt triple DES. 2 0 Public key system enabled. Modem will generate key. 1 Public key system disabled. User must enter key. 3 0 Keep non-encrypted connection. 1 Disconnect from non-encrypted connection. DES KEY SET Type: Configuration Format: AT [cmds] CKxxxx [cmds] Description: Sets the key to be used for DES encryption. The key must be between 15 and 65 characters. DIAGNOSTICS Type: Immediate Format: AT [cmds] CGn [cmds] Description: Performs modem diagnostics. DIAL Type: Immediate Format: AT [cmds] D<#> [; cmds] Description: Dials telephone number according to any modifiers included in the string. Modifier Function DP Dial in pulse mode. DR Dial in answer mode. DS=n Number in memory location n dialed. DT Dial in tone mode. DW Dialing resumed following dial tone detection. D, Dialing paused for amount of time specified in S8 register. D! Flash function initiated. Modem commanded to go on-hook for specified time. D@ Modem waits for a ring-back signal followed by silence up to the time specified in S7 prior to executing the rest of the dial string. D; Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. DIAL BACKUP Type: Configuration Format: AT [cmds] *Bn [cmds] Description: Selects the memory location for the dial backup. *B or *B0 will disable dial backup. DISPLAY STORED PHONE NUMBERS Type: Immediate Format: AT [cmds] &Z? [cmds] Description: Displays all stored phone numbers. ERROR CONTROL FAILURE Type: Configuration Format: AT [cmds] *En [cmds] Description: Configures the modem’s behavior if an error-connecting connection cannot be made. Command Function *E0 Modem will keep non-error-correcting connection. *E1 Modem will disconnect non-error-correcting connection. EXTENDED RING Format: AT [cmds] S51=n [cmds] Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Sets operation of modem when it detects extended rings and fax rings. Bit Value Function 1, 0 00 Extended ring tone detection disabled. 01 Extended ring tone returns RING n twice. 10 Extended ring tone returns RING n four times. 11 Extended ring tone returns RING n six times. 3, 2 00 DTMF detection disabled. 01 DTMF tone returns RING n twice. 10 DTMF tone returns RING . 5, 4 00 Fax ring tone detection disabled. 01 Fax ring tone returns RING. 10 Fax ring tone returns RING 1. 11 Fax ring tone returns RING 2. 7, 6 00 Data ring tone detection disabled. 01 Data ring tone returns RING. 10 Data ring tone returns RING 1. 11 Data ring tone returns RING 3. FAX CONNECT Type: Result code Format: CONNECT FAX/SnnnnVaTbRcLxCyP<#> Example: CONNECT FAX/S1440V1T1R0L1C0P(303) 555-1212 Description: Returned by the modem when a successful fax connection has been made. Response Meaning S2400 2400bps connection. S4800 4800bps connection. S7200 7200bps connection. S9600 9600bps connection. S1200 12Kbps connection. S1440 14.4Kbps connection. V0 Normal vertical resolution. V1 High vertical resolution. T0 One-dimensional coding scheme. T1 Two-dimensional coding scheme. R0 215mm wide (1728 pels). R1 255mm wide (2048 pels). R2 303mm wide (2432 pels). FAX CONNECT (CON’T) Response Meaning L0 A4 length (297mm). L1 B4 length (364mm). L2 Unlimited length. C0 20ms minimum per line. C1 5ms minimum per line. C2 10ms minimum per line. C3 20ms minimum per normal-resolution line, 10ms minimum per fine-resolution line. C4 40ms minimum per line. C5 40ms minimum per normal-resolution line, 20ms minimum per fine-resolution line. C6 10ms minimum per normal-resolution line, 5ms minimum per fine-resolution line. C7 No minimum time required. P<#> Remote fax station number. FAX DISCONNECT Type: Result code Format: DISCONNECTn P<#> Example: DISCONNECT1P(303) 555-1212 Description: Returned by the modem when the fax connection has been broken. Response Meaning DISCONNECT0 Remote modem has confirmed disconnection. DISCONNECT1 Remote modem has not confirmed disconnection. P<#> Remote fax station number. FAX ENCODING Type: Configuration Format: AT [cmds] #Tn [cmds] Description: Sets the encoding scheme of transmitted faxes. Command Function #T0 Sets one-dimensional encoding. #T1 Sets two-dimensional encoding. FAX LENGTH Type: Configuration Format: AT [cmds] #Ln [cmds] Description: Sets the length of transmitted faxes. Command Function #L0 A4 length (297mm). #L1 B4 length (364mm). #L2 Unlimited length. FAX MINIMUM SCAN LINE TRANSMISSION TIME Type: Configuration Format: AT [cmds] #Cn [cmds] Description: Sets the minimum time required for transmission of one scan line. Command Function #C0 20ms minimum per line. #C1 5ms minimum per line. #C2 10ms minimum per line. #C3 20ms minimum per normal-resolution line, 10ms minimum per fine-resolution line. #C4 40ms minimum per line. #C5 40ms minimum per normal-resolution line, 20ms minimum per fine-resolution line. #C6 10ms minimum per normal-resolution line, 5ms minimum per fine-resolution line. #C7 No minimum time required. FAX MODE Type: Immediate Format: AT [cmds] #F [cmds] Description: Sets modem in fax mode. FAX ORIGINATE/ANSWER MODE Type: Register Format: AT [cmds] S80=n [cmds] Description: Selects originate/answer for fax mode. Command Function S80=0 Fax/modem operates in originate mode. S80=1 Fax/modem operates in answer mode. FAX RECEIVE DEVICE Type: Configuration Format: AT [cmds] +FZF=n [cmds] Description: Selects where the modem will store and send received fax and modem data. Command Function +FZF=0 Send fax data to printer and hang up if modem data. +FZF=1 Send fax data to printer and modem data to serial port. +FZF=2 Send fax data to DRAM and printer, and hang up if modem data. +FZF=3 Send fax data to DRAM and hang up if modem data. +FZF=4 Send fax data to DRAM and printer, and hang up if modem data. +FZF=5 Send fax data to DRAM and modem data to serial port. FAX RECEIVE DEVICE Type: Register Format: AT [cmds] S71=n [cmds] Description: Selects where the modem will store and send received fax and modem data. Command Function S71=0 Send fax data to printer and hang up if modem data. S71=1 Send fax data to printer and modem data to serial port. S71=2 Send fax data to DRAM and printer, and hang up if modem data. S71=3 Send fax data to DRAM and hang up if modem data. S71=4 Send fax data to DRAM and printer, and hang up if modem data. S71=5 Send fax data to DRAM and modem data to serial port. FAX RECEIVE MODE Type: Configuration Format: AT [cmds] #Bn [cmds] Description: Configures the operation of the modem when receiving faxes. Command Function #B0 Fax data follows immediately after connection parameters. #B1 Fax data is separated from connection parameters by DC2 (ASCII 24) character. #B2 Fax data is not transmitted until receiving modem requests it. #B3 Displays the fax ring pattern FAX RESOLUTION Type: Configuration Format: AT [cmds] #Vn [cmds] Description: Sets the vertical resolution of transmitted faxes. Command Function #V0 Sets normal resolution. #V1 Sets high resolution. FAX STATION PHONE NUMBER Type: Configuration Format: AT [cmds] #P<#> [cmds] Description: Sets what the modem will report as its phone number to the remote fax machine. FAX/VOICE FLOW CONTROL Type: Configuration Format: AT [cmds] +FLO=n [cmds] Description: Selects the type of flow control to use for voice/fax modes. Command Function +FLO=0 Flow control disabled. +FLO=1 Software flow control enabled. +FLO=2 Hardware flow control enabled. FAX WIDTH Type: Configuration Format: AT [cmds] #Rn [cmds] Description: Sets the width of transmitted faxes. Command Function #R0 215mm wide (1728 pixels). #R1 255mm wide (2048 pixels). #R2 303mm wide (2432 pixels). FIRMWARE DOWNLOAD Type: Immediate Format: AT [cmds] UPX Description: Begins an XMODEM download to the modem firmware. FLOW CONTROL Type: Configuration Format: AT [cmds] &Hn [cmds] Description: Selects the type of flow control to use. Command Function &H0 Flow control disabled. &H3 Hardware flow control enabled. &H4 Software flow control enabled. HELP SCREENS Type: Immediate Format: AT $ Example: AT *$ Description: Shows command help screens for all commands beginning with the given prefix, or no prefix if none is given. Command Function $ Shows ATx help screen. &$ Shows AT&x help screen. *$ Shows AT*x help screen. S$ Shows S-register help screen. HOOK FLASH TIME Type: Register Format: AT [cmds] S56=n [cmds] Default: Unidentified Range: 0-255 Unit: 10ms Description: Selects the amount of time the modem goes on-hook for a hook flash. INACTIVITY TIMER Type: Register Format: AT [cmds] S50=n [cmds] Default: Unidentified Range: 0-255 Unit: 10 seconds Description: Sets the length of time that the modem does not receive information before it disconnects. LEASED-LINE AUTO-HANDSHAKE Type: Configuration Format: AT [cmds] *Mn [cmds] Description: Selects which modem performs the auto-handshaking. Command Function *M0 Originating modem auto-handshakes. *M1 Answering modem auto-handshakes. LEASED LINE RETRY TIME Type: Register Format: AT [cmds] S34=n [cmds] Default: 30 Range: 0-255 Unit: 1 minute Description: When leased line is down, sets the time between checks on whether it is functioning again. LEASED-LINE TRANSMISSION ATTENUATION Type: Configuration Format: AT [cmds] *Pn [cmds] Default: 9 Range: 0 - 15 Unit: -1 dBm Description: Sets the attenuation for transmission when in leased-line mode. LINE TYPE Type: Configuration Format: AT [cmds] &Ln [cmds] Description: Selects line type. Command Function &L0 Switched line. &L1 2-wire leased line. &L2 4-wire leased line. LOCAL/REMOTE CONFIGURATION SELECTION Format: AT [cmds] S37=n [cmds] Default: 0 Range: 0 - 127 Unit: Bit-mapped Description: Selects local and remote profiles for copying. Bit Value Function 2, 1, 0 000 Select local profile 0. 001 Select local profile 1. 010 Select local profile 2. 011 Select local profile 3. 100 Select current local configuration. 101 Select local factory defaults. 3 0 Not used. 6, 5, 4 000 Select remote profile 0. 001 Select remote profile 1. 010 Select remote profile 2. 011 Select remote profile 3. 100 Select current remote configuration. 101 Select remote factory defaults. LOCAL SERIAL PORT SPEED Type: Register Format: AT [cmds] S20=n [cmds] Range: 0 - 46 Description: Sets serial port speed. Value Meaning 0 Sets 230.4Kbps speed. 1 Sets 115.2Kbps speed. 2 Sets 76.8Kbps speed. 3 Sets 57.6Kbps speed. 4 Sets 38.4Kbps speed. 5 Sets 19.2Kbps speed. 6 Sets 16.8Kbps speed. 7 Sets 14.4Kbps speed. 8 Sets 12Kbps speed. 9 Sets 9600bps speed. 10 Sets 7200bps speed. 11 Sets 4800bps speed. 12 Sets 2400bps speed. 13 Sets 1200bps speed. 14 Sets 460.8Kbps speed. 15 Sets 300bps speed. 16 Sets 307.2Kbps speed. 17 Sets 153.6Kbps speed. 18 Sets 102.4Kbps speed. 20 Sets 61.4Kbps speed. 21 Sets 51.2Kbps speed. LOCAL SERIAL PORT SPEED (CON’T) Value Meaning 22 Sets 624Kbps speed. 24 Sets 124.8Kbps speed. 25 Sets 62.4Kbps speed. 26 Sets 41.6Kbps speed. 28 Sets 24.9Kbps speed. 29 Sets 20.8Kbps speed. 46 Sets 921.6Kbps speed. LOCAL SERIAL PORT SPEED ON AUTO-ANSWER Type: Register Format: AT [cmds] S18=n [cmds] Range: 0 - 46 Description: Sets serial port speed when modem auto-answers an incoming call. Value Meaning 0 Auto-detect speed. 1 Sets 115.2Kbps speed. 2 Sets 76.8Kbps speed. 3 Sets 57.6Kbps speed. 4 Sets 38.4Kbps speed. 5 Sets 19.2Kbps speed. 6 Sets 16.8Kbps speed. 7 Sets 14.4Kbps speed. 8 Sets 12Kbps speed. 9 Sets 9600bps speed. 10 Sets 7200bps speed. 11 Sets 4800bps speed. 12 Sets 2400bps speed. 13 Sets 1200bps speed. 14 Sets 460.8Kbps speed. 15 Sets 300bps speed. 16 Sets 307.2Kbps speed. 17 Sets 153.6Kbps speed. 18 Sets 102.4Kbps speed. 20 Sets 61.4Kbps speed. 21 Sets 51.2Kbps speed. 22 Sets 624Kbps speed. 24 Sets 124.8Kbps speed. 25 Sets 62.4Kbps speed. 26 Sets 41.6Kbps speed. 28 Sets 24.9Kbps speed. 29 Sets 20.8Kbps speed. 32 Sets 230.4Kbps speed. 46 Sets 921.6Kbps speed. LOCAL SERIAL PORT SPEED ON AUTO-ANSWER (U-1496 MODE) Type: Register Format: AT [cmds] S18=n [cmds] Default: 2 Range: 0 - 15 Unit: N/A Description: Sets serial port speed when modem auto-answers an incoming call. Note: This table should be used when in U-1496 compatible mode only. Value Meaning 0 Sets 76.8Kbps speed. 1 Sets 57.6Kbps speed. 2 Sets 38.4Kbps speed. 3 Sets 19.2Kbps speed. 4 Sets 16.8Kbps speed. 5 Sets 14.4Kbps speed. 6 Sets 12Kbps speed. 7 Sets 9600bps speed. 8 Sets 7200bps speed. 9 Sets 4800bps speed. 10 Sets 3600bps speed. 11 Sets 2400bps speed. 12 Sets 1800bps speed. 13 Sets 1200bps speed. 14 Sets 600bps speed. 15 Sets 300bps speed. MANUFACTURER CAPTURE Type: Register Format: AT [cmds] S13=n [cmds] Default: 0 Range: 0, 2 Unit: N/A Description: Selects whether to attempt to capture the manufacturer of the other modem during handshaking. Command Function S13=0 Manufacturer capture disabled. S13=2 Manufacturer capture enabled. MODE SELECTION Type: Immediate Format: AT [cmds] +FCLASS=n Description: Sets what mode the modem will operate in. Command Function +FCLASS=0 Data mode. +FCLASS=1 Class 1 fax mode. +FCLASS=2 Class 2 fax mode. +FCLASS=2.0 Class 2.0 fax mode. +FCLASS=6 ZyXELfax mode. +FCLASS=8 Voice mode. +FCLASS=Z Parallel port fax mode. Sends fax data to printer on parallel port. MODE SELECTION Type: Register Format: AT [cmds] S85=n Description: Sets what mode the modem will operate in. Command Function S85=0 Data mode. S85=1 Class 1 fax mode. S85=2 Class 2 fax mode. S85=6 ZyXELfax mode. S85=8 Voice mode. PANEL KEY Type: Configuration Format: AT [cmds] *Ln [cmds] Description: Locks the front panel key. Command Function *L0 Key unlocked. *L1 Key locked. PASSWORD FOR SUPERVISOR Type: Immediate Format: AT [cmds] *HS Description: Changes supervisory password. Requires current supervisory password. PASSWORD TABLE Type: Immediate Format: AT [cmds] *Hn Description: Changes password for phone book entry n. Requires supervisory password. PASSWORD TABLE DISPLAY Type: Immediate Format: AT [cmds] *V [cmds] Description: Displays the password table. Note: The supervisor password must be entered to execute this command. POOR SIGNAL QUALITY REACTION Type: Configuration Format: AT [cmds] *Qn [cmds] Description: Configures the modem’s reaction to poor signal quality. Command Function *Q0 Modem does nothing during poor signal quality. *Q1 Modem retrains during poor signal quality. *Q2 Modem fall-back during poor signal quality, and fall-forward when signal improves. *Q3 Modem will disconnect during poor signal quality. PRINT OPTIONS Format: AT [cmds] S73=n [cmds] Default: 24 Range: 0 - 47 Unit: Bit-mapped Description: Sets options for printer. Bit Value Function 0 0 Printer connected to parallel port. 1 Printer connected to serial port. 1 0 Fast PCL mode enabled. 1 Fast PCL mode disabled. 2 0 Set printer resolution to 300dpi. 1 Set printer resolution to 150dpi. 3 0 Do not resize faxes to fit page. 1 Resize faxes to fit page. 5, 4 00 Select letter-size paper. 01 Select legal-size paper. 10 Select A4-size paper. PRINT STORED FAXES Type: Immediate Format: AT [cmds] +FZP=n [cmds] Description: Prints faxes that have been stored in DRAM but not printed. PRINTER PAPER SIZE Type: Configuration Format: AT [cmds] +FZS=n [cmds] Description: Sets the paper size n the printer. Command Function +FZS=0 Select letter-size paper. +FZS=1 Select legal-size paper. +FZS=2 Select A4-size paper. PRINTER RESOLUTION Type: Configuration Format: AT [cmds] +FZR=n [cmds] Description: Sets the resolution to print on the printer. Command Function +FZR=0 Set printer resolution to 300dpi. +FZR=1 Set printer resolution to 150dpi. PRINTER TYPE Format: AT [cmds] S72=n [cmds] Default: Unidentified Range: 0 - 4 Unit: Bit-mapped Description: Sets options for printer. Bit Value Function 0 0 Use Deskjet 500 and Laserjet II series PCL. 1 Use Laserjet III series and higher PCL. 1 0 PCL mode enabled. 1 PostScript Level I mode enabled. PROTOCOL/SPEED - SWITCHED/LEASED LINE Type: Configuration Format: AT [cmds] &Nn [cmds] Description: Selects the current protocol and speed for switched and leased-line calls. Command Function &N0 Auto-select fastest common protocol. &N1 Use V.33 14.4Kbps. &N2 Use V.33 12Kbps. &N3 Use V.32 9600bps trellis coded. &N4 Use V.32 9600bps. &N5 Use V.32 4800bps. &N6 Use V.29 9600bps. &N7 Use V.29 7200bps. &N8 Use V.29 4800bps. &N9 Use V.27bis 4800bps. &N10 Use V.27bis 2400bps &N11 Use V.26bis 2400bps. &N12 Use V.23 1200/75bps. &N13 Use V.23 600/75bps. &N14 Use V.22bis 2400/1200bps. &N15 Use V.22 1200bps. &N16 Use V.21 300bps. PROTOCOL/SPEED - SWITCHED/LEASED LINE (CON’T) Command Function &N17 Use V.32bis 14.4Kbps. &N18 Use V.32bis 12Kbps. &N19 Use V.32bis 7200bps. &N24 Use Bell 212A 1200bps. &N25 Use Bell 103A 300bps. &N32 Use FAX mode. &N34 Use ZyXEL 19.2Kbps. &N35 Use ZyXEL 16.8Kbps. &N36 Use ZyXEL 14.4Kbps. &N37 Use ZyXEL 12Kbps. &N38 Use ZyXEL 9600bps. &N39 Use ZyXEL 7200bps. &N42 Use ZyCELL 14.4Kbps. &N43 Use ZyCELL 12Kbps. &N44 Use ZyCELL 9600bps. &N45 Use ZyCELL 7200bps. &N46 Use ZyCELL 4800bps. &N62 Use V.34 28.8Kbps. &N63 Use V.34 26.4Kbps. &N64 Use V.34 24Kbps. &N65 Use V.34 21.6Kbps. &N66 Use V.34 19.2Kbps. &N67 Use V.34 16.8Kbps. &N68 Use V.34 14.4Kbps. &N69 Use V.34 12Kbps. &N70 Use V.34 9600bps. &N71 Use V.34 7200bps. &N72 Use V.34 4800bps. &N73 Use V.34 2400bps. PROTOCOL/SPEED - SWITCHED/LEASED LINE Type: Configuration Format: AT [cmds] S19=n [cmds] Description: Selects the current protocol and speed for switched and leased-line calls. Command Function S19=0 Auto-select fastest common protocol. S19=1 Use V.33 14.4Kbps. S19=2 Use V.33 12Kbps. S19=3 Use V.32 9600bps trellis coded. S19=4 Use V.32 9600bps. S19=5 Use V.32 4800bps. S19=6 Use V.29 9600bps. S19=7 Use V.29 7200bps. S19=8 Use V.29 4800bps. S19=9 Use V.27bis 4800bps. S19=10 Use V.27bis 2400bps S19=11 Use V.26bis 2400bps. S19=12 Use V.23 1200/75bps. S19=13 Use V.23 600/75bps. S19=14 Use V.22bis 2400/1200bps. S19=15 Use V.22 1200bps. S19=16 Use V.21 300bps. S19=17 Use V.32bis 14.4Kbps. S19=18 Use V.32bis 12Kbps. S19=19 Use V.32bis 7200bps. S19=24 Use Bell 212A 1200bps. S19=25 Use Bell 103A 300bps. S19=32 Use FAX mode. S19=34 Use ZyXEL 19.2Kbps. S19=35 Use ZyXEL 16.8Kbps. S19=36 Use ZyXEL 14.4Kbps. S19=37 Use ZyXEL 12Kbps. PROTOCOL/SPEED - SWITCHED/LEASED LINE (CON’T) Command Function S19=38 Use ZyXEL 9600bps. S19=39 Use ZyXEL 7200bps. S19=42 Use ZyCELL 14.4Kbps. S19=43 Use ZyCELL 12Kbps. S19=44 Use ZyCELL 9600bps. S19=45 Use ZyCELL 7200bps. S19=46 Use ZyCELL 4800bps. S19=62 Use V.34 28.8Kbps. S19=63 Use V.34 26.4Kbps. S19=64 Use V.34 24Kbps. S19=65 Use V.34 21.6Kbps. S19=66 Use V.34 19.2Kbps. S19=67 Use V.34 16.8Kbps. S19=68 Use V.34 14.4Kbps. S19=69 Use V.34 12Kbps. S19=70 Use V.34 9600bps. S19=71 Use V.34 7200bps. S19=72 Use V.34 4800bps. S19=73 Use V.34 2400bps. READ PROFILE FROM REMOTE Type: Immediate Format: AT [cmds] *Rmn [cmds] Description: Reads configuration n from the remote modem and stores it in local profile m. Profile Meaning 0 Stored profile 0. 1 Stored profile 1. 2 Stored profile 2. 3 Stored profile 3. 4 Active configuration; may be applied only to remote. 5 Factory defaults; may be applied only to remote. REDIAL Type: Immediate Format: AT [cmds] DL Description: Redials the last number dialed. REDIAL CONTINUOUSLY Type: Immediate Format: A> Description: Redials the last number dialed up to 9 times. Note: Do not precede this command with AT or follow it with . REMOTE CONFIGURATION REQUEST Type: Configuration Format: AT [cmds] *Fn [cmds] Description: Sets the modem to accept or deny requests for remote configuration. Command Function *F0 Deny remote configuration request. *F1 Grant remote configuration request. &T4 must also be set. RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Description: Selects which result codes will be displayed. Command Function X0 Basic result codes only enabled. X1 Basic and connection speed result codes enabled. X2 Basic and connection speed result codes and dialtone detection enabled. X3 All result codes except dialtone detection enabled. X4 All result codes enabled. X5 All result codes plus DTE speed and error control level enabled. X6 All result codes plus ARQ enabled. X7 All result codes plus ARQ and error control level enabled. RING VOLUME Format: AT [cmds] Nn [cmds] Default: 5 Range: 0 - 7 Unit: N/A Description: Sets the volume of the ring sound. N0 disables the ring sound. RTS/CTS DELAY Type: Register Format: AT [cmds] S26=n [cmds] Default: 0 Range: 0-255 Unit: 10 ms Description: Sets the time in synchronous mode between the RTS signal going high and the CTS signal being set high. SECONDARY CHANNEL Type: Configuration Format: AT [cmds] *Sn [cmds] Description: Selects the secondary channel. Command Function *S0 Secondary channel disabled. *S1 Secondary channel enabled. SECURITY CONFIGURATION Type: Configuration Format: AT [cmds] *Gn [cmds] Description: Sets security mode and options. Command Function *G0 Security disabled. *G1 Security type I and password check enabled. *G2 Security type I, callback, and password check enabled. *G3 Security type II and password check enabled. *G4 Security type II, callback, and password check enabled. *G5 Security type II, callback, and password check enabled. Callback number sent by remote. SERIAL PORT MODE Type: Configuration Format: AT [cmds] CMn [cmds] Description: Sets the operating mode of the serial interface. Command Function CM0 Single-stream mode. CM1 Multistream mode. SOFT RESET Type: Immediate Format: AT [cmds] Zn [cmds] 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. Z4 Restore factory defaults and use them as power-on defaults. STATUS REGISTER BIT Type: Configuration Format: Read: AT [cmds] Sn.m=0 or 1 [cmds] Write: AT [cmds] Sn.m=? [cmds] Example: AT S40.4=1 S51.3? Description: Sets/clears or reads bit m of register n. STORE ACTIVE PROFILE Type: Immediate Format: AT [cmds] &Wn [cmds] Description: Writes the values for the active profile into the non-volatile RAM. Command Function &W0 Write the active profile to stored profile 0. &W1 Write the active profile to stored profile 1. &W2 Write the active profile to stored profile 2. &W3 Write the active profile to stored profile 3. TELEPHONE STATUS Type: Configuration Format: AT [cmds] +VLH? [cmds] Description: Reports whether the telephone connected to the Line In jack is on-hook. Value Meaning +VLH=0 Telephone is on-hook. +VLH=1 Telephone is off-hook. TEST MODES Type: Immediate Format: AT [cmds] &Tn Description: Performs and configures test modes. Command Function &T0 End current test. &T1 Begin local analog loopback 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. &T8 Begin local analog loopback and self-test. &T9 Begin ISDN loopback. &T10 Begin ISDN loopback and self-test. TONE GENERATOR (PHONE KEYS) Type: Immediate Format: AT [cmds] +VTS=a Example: AT +VTS=* +VTS=A Range: 0-9, A-D, #, * Description: Generates the DTMF tone for the characters in the string for the duration set with +VBT. TONE GENERATOR (TIMED PHONE KEYS) Type: Immediate Format: AT [cmds] +VTS={a, n} Example: AT +VTS={*, 10} Range: a 0-9, A-D, #, *; x 0-255 Unit: x .1 second Description: Generates the DTMF tone for duration x for the character a. TONE GENERATOR (DIRECT ENTRY) Type: Immediate Format: AT [cmds] +VTS=[m, n, x] Example: AT +VTS=[2000, 3000, 12] Range: m 200-3300, n 200-3300, x 0-255 Unit: m 1 Hz, n 1 Hz, x .1 second Description: Generates a dual-frequency tone for duration x at frequencies m and n. TONE GENERATOR LENGTH Format: AT [cmds] +VTD=n,m [cmds] Default: n 50, m 70 Range: 0 - 255 Unit: 10ms Description: Sets the length of DTMF tones that are generated to n and the delay between tones to m. U-1496 COMPATIBLE MODE Type: Register Format: AT [cmds] S62=n [cmds] Description: Selects whether the modem will use the settings from the U-1496 model or the normal settings. This affects register S18. Command Function S62=0 U-1496 compatible mode disabled. S62=1 U-1496 compatible mode enabled. VOICE AUTO-DISCONNECT Type: Configuration Format: AT [cmds] +VNH=n [cmds] Description: Configures the auto-disconnect mode. Command Function +VNH=0 Auto-disconnect disabled. +VNH=1 Auto-disconnect enabled. +VNH=2 Auto-disconnect enabled, but ATH disables auto-disconnect and does not hang up. VOICE COMPRESSION Type: Configuration Format: AT [cmds] +VSM=n,m [cmds] Description: Selects the compression type and sample rate to be used for voice data storage. Command Function m=7200 Select 7.2KHz sample rate. m=8000 Select 8KHz sample rate. m=9600 Select 9.6KHz sample rate. m=11025 Select 11KHz sample rate. n=1 Select Code Excited Linear Prediction compression. n=2 Select 2-bit ZyXEL ADPCM compression. n=3 Select 3-bit ZyXEL ADPCM compression. n=4 Select 4-bit ZyXEL ADPCM compression. n=30 Select 3-bit ZyXEL ADPCM compression with resync. n=40 Select 4-bit DVI ADPCM compression. n=80 Select 8-bit A-law PCM compression. n=81 Select 8-bit Mu-law PCM compression. VOICE CONNECT Type: Result code Format: VCON Description: Returned by the modem when a voice connection has been made. VOICE DEVICE Type: Configuration Format: AT [cmds] +VLS=n [cmds] Description: Selects the I/O device for the DSP chip. Command Function +VLS=0 Voice I/O disabled. +VLS=1 Telephone connected to Line In jack. +VLS=2 Phone line connected to switched line jack. +VLS=8 External microphone. +VLS=16 Internal speaker. VOICE DTMF DETECTION Type: Configuration Format: AT [cmds] +VDD=m,n [cmds] Default: m 15, n 8 Range: m 0-31, n 0-255 Unit: m 1 dB, n .1 second Description: Sets the threshold of DTMF detection (m) and the minimum period of DTMF required to be detected (n). VOICE GAIN - PLAYBACK Type: Configuration Format: AT [cmds] +VGT=n [cmds] Default: 128 Range: 56-200 Unit: N/A Description: Sets the gain for voice playback. VOICE GAIN - RECORD Type: Configuration Format: AT [cmds] +VGR=n [cmds] Default: 0 Range: 0, 56-200 Unit: N/A Description: Sets the gain for received voice signals. A value of 0 sets automatic gain level. VOICE INACTIVITY TIMER Type: Configuration Format: AT [cmds] +VIT=n [cmds] Default: 70 Range: 0-255 Unit: .1 second Description: Sets the length of time that the modem does not receive any voice data before it returns to command mode. VOICE INITIALIZE SETTINGS Type: Immediate Format: AT [cmds] +VIP [cmds] Description: Resets all voice mode settings to factory defaults. VOICE OFF-HOOK SENSITIVITY Type: Configuration Format: AT [cmds] +VVT=n [cmds] Default: 16 Range: 0-255 Unit: N/A Description: Sets the sensitivity of detection of the remote site going off-hook. Lower numbers are more sensitive. VOICE RECEIVE Type: Immediate Format: AT [cmds] +VRX Description: Begins receiving voice data. VOICE RE-RING DETECT TIME Type: Configuration Format: AT [cmds] +VRA=n [cmds] Default: 70 Range: 0-255 Unit: .1 second Description: Sets the maximum time the modem will wait for the remote station to ring again before it assumes that it has gone off-hook. VOICE RESYNC CLOCK Type: Configuration Format: AT [cmds] +VSY=n [cmds] Default: 0 Range: 0-255 Unit: 50 ms Description: Sets the time between resync signals in the stored voice data. VOICE RING DETECT TIME Type: Configuration Format: AT [cmds] +VRN=n [cmds] Default: Unidentified Range: 0-255 Unit: 1 second Description: Sets the maximum time the modem will wait for the remote station to ring before it assumes that it went off-hook before it rang. VOICE SILENCE DETECTION Type: Configuration Format: AT [cmds] +VSD=m,n [cmds] Default: Unidentified Range: m 0-31, n 0-255 Unit: m 1 dB, n .1 second Description: Sets the threshold of silence detection (m) and the minimum period of silence required to be detected (n). VOICE TRANSMIT Type: Immediate Format: AT [cmds] +VTX Description: Begins transmitting voice data. WRITE PROFILE TO REMOTE Type: Immediate Format: AT [cmds] *Wmn [cmds] Description: Reads configuration n from the local modem and stores it in remote profile m. Profile Function 0 Stored profile 0. 1 Stored profile 1. 2 Stored profile 2. 3 Stored profile 3. 4 Active configuration; may be applied only to local. 5 Factory defaults; may be applied only to local. Proprietary V.25bis Command Set COMMAND SET - AT Type: Immediate Format: RST Description: Returns to AT command set.