BASIC "AT" COMMAND SET Command Function and Reference description A/ Re-execute last command A> Repeat last command continuously Terminate current connection attempt +++ Escape sequence code, entered in data state, wait for modem to return to command state ATA Force answer mode (see also S39b2) S39b2 ATBn Bn Handshake option S28b7 B0 * Select CCITT V.22 for 1200 bps communication B1 Select Bell 212A standard for 1200 bps ATD Dial number and options that follows (see also S38b0, S35b4) P Pulse dial S23b1 T Tone dial S23b1 , Pause for a time specified in S6 ; Return to command state after dialing ! Hook flash, call transfer W Wait for second dial tone @ Wait for a 5-second silence before proceeding, otherwise return 'NO ANSWER' R Reverse frequencies (Originate a call in answer mode) S17b5 ATDL Dial last number ATDSn n=0-9 Dial number stored in NVRAM at position n ATEn Command mode local echo of keyboard commands. S23b0 E0 Echo off E1 * Echo on ATHn On/off hook control H0 * Hang up (on hook) H1 Go off hook BASIC "AT" COMMAND SET Command Function and Reference description ATIn Display inquiry I0 Display product code I1 Display product info. & results of ROM checksum I2 Link status report ATLn n=0-7 *4 Speaker volume control S24b5 ATMn Speaker control M0 Speaker always Off S21b1 M1 * Speaker On until carrier is established M2 Speaker always On M3 Speaker On after last digit dialed, Off at carrier detect ATNn n=0-7 *5 Ring volume control, n=0 Disable the ring function. S24b1 ATO Return to on-line state ATP Pulse dial ATQn Result code displayed S23b6 Q0 * Modem returns result code Q1 Modem does not return result code Q2 Quiet in answer mode only (will not show in AT&Vn) S40b1 S42b2 ATSr.b=n Set bit .b of register r to n (0/off or 1/on). ATSr.b? Inquiry bit .b of register r ATSr=n Set S-register r to value n, n must be a decimal number between 0-255 ATSr? Display value stored in S-register r ATT Tone dial ATVn Verbal/Numeric result codes S23b6 V0 Display result codes in numeric form S35b7 V1 * Display result codes in verbose form ATXn n=0-7 *5 Result code options, use the options table S23b3 BASIC "AT" COMMAND SET Command Function and Reference 2 description ATZn n=0-4 Modem reset Zn Reset modem and load user profile n S15b5 Z4 Reset modem and load factory settings AT$ Help, Basic command summary AT&$ Help, Extended, Ampersand, command summary AT*$ Help, Extended, Star, command summary EXTENDED "AT&" COMMAND SET Command Function and Reference description &Bn Data rate, terminal-to-modem (DTE/DCE) S28b6 &B0 DTE rate follows connection rate S44b6 &B1 * DTE/DCE rate fixed at DTE setting (see also S18, S44b6) &Cn Carrier Detect (CD) operations S21b4 &C0 Assume that the carrier is always on &C1 * CD tracks presence of carrier (see also S38b3) S38b3 &Dn Data Terminal Ready (DTR) operations &D0 Assume DTR is always on S21b6 &D1 DTR off-on transition causes dial of the default number *Dn &D2 * DTR off causes the modem to hang up &D3 DTR off causes the modem to hang up and reset the modem from profile #0 &F Load Factory setting into RAM as active configuration &Gn Guard tone &G0 * No Guard tone, U.S., Canada S28b4 &G1 Reserved &G2 1800 HZ guard tone EXTENDED "AT&" COMMAND SET Command Function and Reference description &Hn Data flow control, DTE/DCE &H0 Flow control disabled S27b3 &H3 * Hardware (CTS/RTS) flow control &H4 Software (XON/XOFF) flow control &Jn Phone line type S28b0 &J0 * Single phone line-RJ11 phone jack &J1 Multiple phone/modem lines RJ12 / RJ13 phone jack &Kn Error control and data compression &K0 No error control S27b0 &K1 MNP4+MNP3 (see also S41b0) S41b0 &K2 MNP4+MNP5 (see also S38b5, S41b0) S38b5 &K3 V.42+MNP4 &K4 * V.42+V.42 bis (compatible with &K2) &Ln Normal/Leased line operation &L0 * Normal phone line S14b2 &L1 2 wire leased line &L2 4 wire leased line &Mn Sync/Asynchronous &M0 * Asynchronous mode with data buffering S14b6 &M1 Asynchronous command, synchronous data &M2 Direct asynchronous mode without data buffering &M3 Synchronous mode &Nn Data Rate, Data Link (DCE/DCE) S19 &N0 * Multi-Auto, auto negotiate highest possible link rate; ZyX 19200 (Plus models only), ZyX 16800, V.32bis, V.32, V.22bis, V.22 and Bell 212A, G3 Fax S38b4 S43b0S43b1 &N1 V.33 14000/12000 &N2 V.33 12000 &N3 V.32 9600T/9600/ 7200T/4800 EXTENDED "AT&" COMMAND SET Command Function and Reference description &N4 V.32 9600/7200T/4800 &N5 V.32 4800 &N6 V.29 9600 (U1496 & U1496RN only) &N7 V.29 7200 (U1496 & U1496RN only) &N8 V.29 4800 (U1496 & U1496RN only) &N9 V.27ter 4800 (U1496 & U1496RN only) &N10 V.27ter 2400 (U1496 & U1496RN only) &N11 V.26 2400 (U1496 & U1496RN only) S35b2 &N12 V.23 1200/75 &N13 V.23 600/75 &N14 V.22bis 2400/1200 &N15 V.22 1200 &N16 V.21 300 &N17 V.32bis 14400/12000/9600/7200/ 4800 &N18 V.32bis 12000/9600/7200/4800 &N19 V.32bis 7200/4800 &N24 BELL 212A 1200 &N25 BELL 103 300 &N32 ZyXEL FAX 14400/12000/9600/7200/ 4800/ 2400 (use S42 bit 4 to disable V.17, 14400) S42b4 &N34 ZyXEL 19200* &N35 ZyXEL 16800* &N36 ZyXEL 14400* &N37 ZyXEL 12000* &N38 ZyXEL 9600* &N39 ZyXEL 7200* &N42 CELL 14400** &N43 CELL 12000** &N44 CELL 9600** &N46 CELL 4800** &N47 CELL 4800C** &N48 CELL 3600C** &N49 CELL 2400C** * note all ZyXEL modes except ZyXEL 16800 a&N45 CELL 7200T2 re only available with Plus models ** note all CELL modes are only available with ZyXEL's Cellular option EXTENDED "AT&" COMMAND SET Command Function and Reference description &Pn Pulse dial make/break ratio S23b2 &P0 * Pulse dial make/break ratio= 39% / 61% &P1 Pulse dial make/break ratio= 33% / 67% &Rn RTS (Received Data hardware flow control) function selection, used in synchronous mode only S21b5 &R0 CTS tracks RTS, response delay is set in S26 &R1 * Ignore RTS, assumes RTS always on &Sn Data Set Ready (DSR) S21b3 &S0 * DSR override, always on S44b4 &S1 According to CCITT, modem controls DSR S41b5 &Tn Modem testing &T0 Terminate test in progress &T1 Initiate Analog Loopback test (ALB) &T3 Initiate Local Digital Loopback test (hardware test, LDL) &T4 * Grant Remote Digital Loopback request from remote modem S14b1 &T5 Deny Remote Digital Loopback request from remote modem &T6 Initiate Remote Digital Loopback test (RDL) &T7 Initiate Remote Digital Loopback with self test (RDL+ST) &T8 Initiate Analog Loopback with self test (ALB+ST) &Vn View profile settings &V0 View current active settings &Vn View user profile # (n-1) settings &V5 View factory default settings &Wn n=0-3 Write current settings to NVRAM at user profile #n S35b6 EXTENDED "AT&" COMMAND SET Command Function and Reference description &Xn Synchronous timing source &X0 * Modem provides synchronous transmit clock signal (internal clock, applies to pin 15 of RS232D) S14b4 &X1 Terminal provides synchronous transmit clock signal (external clock, applies to pin 24 of RS232D) &X2 Received carrier provides synchronous transmit clock signal (Remote or Slave clock, applies to pin 15 of RS232D) &Yn Break handling, Destructive Breaks clear the buffer; Expedited Breaks are sent iimmediately to the remote system &Y0 Destructive, expedited S28b2 &Y1 * Nondestructive, expedited &Y2 Nondestructive, unexpedited &Zn=s n=0-9 Write phone number s to NVRAM at position n, use AT*Dn or ATS29=n to set default dial pointer *Dn S29 &Z? Display the phone numbers stored in NVRAM EXTENDED "AT*" COMMAND SET Command Function and Reference description *Bn Dial-backup S35bn *B0 * Disable dial-backup *Bn Enable dial-backup and set dial-backup pointer at telephone directory location (n-1) S44b2 *Cn Character length *C0 * 10-bit character length S15b3 *C1 11-bit character length *C2 9-bit character length *C3 8-bit character length *Dn n=0-9 *0 Set default dial pointer at telephone directory location n, use AT&Zn=s to store phone numbers S29bn &Zn EXTENDED "AT*" COMMAND SET Command Function and Reference description *En Error control negotiation S21b0 *E0 * If error control negotiation fails, keep the non-error control connection *E1 If error control negotiation fails, terminate the call *Fn Remote configuration S36b0 *F0 * Deny remote configuration *F1 Accept remote configuration (Remote Digital Loopback must be granted also, AT&T4) &T4 *Gn Security function *G0 * Disable security function S36b5 *G1 Enable type 1 security, with password check (ZyXEL to ZyXEL only) *G2 Enable type 1 security, with password check and call- back (ZyXEL to ZyXEL only) *G3 Enable type 2 security, with password check *G4 Enable type 2 security, with password check and call- back *G5 Enable type 2 security, with password check and call- back, remote site enter the call-back number *HS Modify supervisory password *Hn n=0-9 Modify user password table at location n *In Command set S17b6 3 *I0 * AT command set *I1 V.25bis command set *I2 Dumb mode *Ln Panel lock function S28b1 *L0 * Panel key normal *L1 Panel key locked *Mn Leased line auto handshake *M0 * Leased line auto handshake on Originate mode S14b0 *M1 Leased line auto handshake on Answer mode *Pn n= 0-15 *9 Leased line transmission power level, set to (-n )dBm, n=0 to 15 S17b1S35b3 *Qn Action taken when line quality changes *Q0 No response to poor signal quality S27b6 *Q1 Retrain action taken if signal quality is poor S41b2 *Q2 * Adaptive rate (auto fall-back / forward) *Q3 Disconnect for poor signal quality *Rab Read remote configuration b to local profile a S36b1 a=0-3 Local user profile number a S37b4 b=0-3 Remote user profile number b S37b0 b=4 Remote current configuration b=5 Remote factory default *Sn *S0 * Secondary channel disabled S17b0 *S1 Secondary channel enabled *T Recall the last CND (Caller ID) information S40b2 *V View password table *Wab Write local user profile a to remote user profile b and reset remote modem from profile b S36b1 a=0-3 Local user profile number a S37b4 a=4 Local active configuration a=5 Local factory default configuration b=0-3 Remote user profile number b S37b0 FAX, CLASS 2 "AT+F" COMMAND SET Command Function and description += Execute a command or set a parameter +=? Read permissible setting +? Read current setting +FAA=n Auto answer mode parameter n=0 DCE to answer as set by +FCLASS n=1 DCE can answer and auto. determine calling type FAX, CLASS 2 "AT+F" COMMAND SET Command Function and description +FBOR=n Phase C data bit order n=0 Select direct bit order n=1 Select reversed bit order in receiving mode +FCIG="string" Local polling ID string +FCLASS=n Service class selection n=0 Set to modem mode n=2 Set to Class 2 mode n=6 Set to ZFAX mode n=8 Set to Voice mode +FCON DCE response, Fax connection made +FCR=n Capability to receive parameter n=0 DCE will not receive message data or poll a remote +FDCC=vr,br,wd, ln, DCE capabilities parameters, df, ec, bf, st refer to EIA pro.2388 for detail descriptions +FDCS=vr,br,wd, ln, Current session parameter, df, ec, bf, st refer to EIA pro.2388 for detail descriptions +FDIS=vr,br,wd, ln, Current session negotiation df, ec, bf, st parameters, refer to EIA pro.2388 for detail descriptions +FDR Receive phase C data command, initiates document reception +FDT [=df,vr,wd,ln] Transmit phase C data command, releases the DCE to proceed with negotiation +FET=n End the page or document command n=0 More page, same document n=1 EE End of Document, another document next n=2 No more pages or documents n=4 Procedure interrupt, another page follow n=5 Procedure interrupt, another document follow n=6 Procedure interrupt, all done +FLID="string" Local ID string parameter +FLPL=n n=0 DTE has no document to poll n=1 DTE has a document ready for polling FAX, CLASS 2 "AT+F" COMMAND SET Command Function and description +FMDL? Request DCE model +FMFR? Request DCE manufacturer +FPTS=n n=1 Page good n=2 page bad; retrain requested n=3 Page good; retrain requested n=4 page bad; interrupt requested n=5 page good; interrupt requested +FREV? Request DCE revision +FSPL=n n=0 DTE does not want to poll n=1 DTE can receive a polled document FAX, ZyXEL "AT#" COMMAND SET Command Function and description #Bn "CONNECT FAX" result code enable or disable #B0 * Disable, used in ZFAX mode, normal operation #B1 Enabled, for BBS fax receiving application, this command also changes CONNECT 12000/ARQ to CONNECT 9600/ARQ. This will also send out external mail string "ZyXEL" when fax is connected, DCE will not send fax connection parameters until is received from DTE #B2 Enable Polling feature of Fax. Modem will send polling signal to remote fax machine. #B3 Display ring cadence #Cn Set minimun scan line time capability at the receiver #C0 20 ms at 3.85 line/mm, T(7.7)=T(3.85) #C1 5 ms at 3.85 line/mm, T(7.7)=T(3.85) #C2 10 ms at 3.85 line/mm, T(7.7)=T(3.85) #C3 20 ms at 3.85 line/mm, T(7.7)=1/2T(3.85) #C4 40 ms at 3.85 line/mm, T(7.7)=T(3.85) #C5 40 ms at 3.85 line/mm, T(7.7)=1/2T(3.85) #C6 10 ms at 3.85 line/mm, T(7.7)=1/2T(3.85) #C7 0 ms at 3.85 line/mm, T(7.7)=T(3.85) #F Set the U-1496 into ZyXEL fax mode, same as "AT&N32" #Ln Set maximum recording length #L0 Set maximum recording length, A4 (297mm) #L1 Set maximum recording length, B4 (364mm) #L2 Set maximum recording length, unlimited. #P Set the local ID string, 25 characters max. #Rn Set recording width #R0 Set 1728 picture elements along a scan line length of 215mm #R1 Set 2048 picture elements along a scan line length of 255mm #R2 Set 2432 picture elements along a scan line length of 303mm FAX, ZyXEL "AT#" COMMAND SET Command Function and description #Tn Coding Scheme #T0 Set to one dimensional coding scheme #T1 Set to two dimensional coding scheme #Vn Vertical resolution #V0 Set to normal vertical resolution #V1 Set to high vertical resolution Result Code (with #B0) CONNECT FAX/SnnnnVnTnRnLnCnP (with #B1) /SnnnnVnTnRnLnCnP DISCONNECTxP Snnnn First four digits of Fax connection speed Vn Vertical resolution; n =0-1 Tn Coding scheme; n =0-1 Rn Recording width; n =0-2 Ln Recording length; n =0-2 Cn Scan time; n =0-7 x Disconnect with confirmation (x =0) or without (x =1) P Remote Fax number VOICE, "AT+V" COMMAND SET Command Function and description += Execute a command or set a parameter +=? Read permissible setting +? Read current setting +FCLASS=8 Set modem to Voice mode +VBT=n n=0-255 *10 Set the DTMF tone generation duration at 0.1 sec. increments, used in conjunction with +VTS VCON DCE reports Voice connection made +VIP Initialize all the Voice parameters to factory default VOICE, "AT+V" COMMAND SET Command Function and description +VLS=n Voice I/O device selection n=0 Disconnect all I/O devices n=2 Dial-up line jack n=8 External mic. (connect to Dial-up line jack) n=16 Connect to Internal Speaker +VNH=n Automatic hang-ups disable or enable n=0 DCE shall not disable automatic hang-ups n=1 DCE shall disable automatic hang-ups with ATH0 n=2 DCE shall disable automatic hang-ups without ATH0 +VRA=n n=0-255 *70 Set length of time, in 0.1 sec. unit, to wait between ringbacks before DCE assume remote station has gone off hook +VRN=n n=0-255 *57 Set length of time, in 0.1 sec. unit, to wait for ringback before assume remote station has gone off hook +VRX Start the voice reception process +VSD=, Set the silence detection sensitivity and the required period of silence *15 0-31, larger values imply that the DCE treats noisier conditions as silence, 0 to disable silence detection *70 0-255, in units of 0.1 second, required period of silence +VSM=n Voice compression method selection n=1 9.6 Kbps CELP (Code Excited Linear Prediction), only available in Plus(+) models *n=2 19.2 Kbps 2-bit ADPCM n=3 28.8 Kbps 3-bit ADPCM +VTS= Cause DCE to produce DTMF and other tones +VTX Start the voice transmission process * Manufacture default (except when used to represent "AT*" commands) Snnbx Cross reference to S-register nn bit number x In Reference Column, "AT" is omitted when AT command is referred to RESULT CODES OPTIONS TABLE Result codes Commands ATV0 ATV1 AT X0 X1 X2 X3 X4 X5 X6 X7 0 OK V V V V V V V V 1 CONNECT V V V V V @ $ # 2 RING** V V V V V V V V 3 NO CARRIER V V V V V V V V 4 ERROR V V V V V V V V 5 CONNECT 1200 % % % % @ $ # 6 NO DIAL TONE V V V V V 7 BUSY V V V V V 8 NO ANSWER V V V V V 9 RINGING* V V V V V 10 CONNECT 2400 % % % % @ $ # 11 CONNECT 4800 % % % % @ $ # 12 CONNECT 9600 % % % % @ $ # 14 CONNECT 19200 % % % % @ $ # 15 CONNECT 7200 % % % % @ $ # 16 CONNECT 12000 % % % % @ $ # 17 CONNECT 14400 % % % % @ $ # 18 CONNECT 16800 % % % % @ $ # 19 CONNECT 38400 % % % % @ 20 CONNECT 57600 % % % % @ 21 CONNECT 76800 % % % % @ Use ATS35 bit 7 (ATS35.7=1) to enable the following numerical result codes When "NONE" error control connection is made, use the above table Numerical Connect speed Numerical Connect speed Code with Error Correction Code with Error Correction 30 CONNECT 35 CONNECT 9600 31 CONNECT 1200 36 CONNECT 12000 32 CONNECT 2400 37 CONNECT 14400 33 CONNECT 4800 38 CONNECT 16800 34 CONNECT 7200 39 CONNECT 19200 Note: V Supported % Reporting DTE rate @ CONNECT DTE speed/Protocol Link speed/Error control level. Example: CONNECT 38400/V.32bis 14400/V.42bis $ CONNECT Link speed/Error control (ARQ), Example: CONNECT 14400/ARQ # CONNECT Link speed/ Error control (ARQ)/Data Compression. Example: CONNECT 14400/ARQ/V.42b ** When more than one type of Distinctive Ring is turned on (S40b3-6) "RINGn" will be reported, n = Ring Type# * Use S42b6 to disable "RINGING" result code BASIC S-REGISTERS, "ATSn=x" Command +Default/ Function and description Reference S0= +000 Set the number of rings on which the modem will answer. 0 value disable auto-answer S1= +000 Counts and stores number of rings from an incoming call S2= +043 Define escape code character, default "+" (43 dec.) S3= +013 Define ASCII Carriage Return S4= +010 Define ASCII Line Feed S5= +008 Define ASCII Backspace S6= +003 Set duration, in number of seconds, modem waits before dialing, not applicable if X2-X6 is set S7= +060 Set duration, in number of seconds, modem waits for a carrier S8= +002 Set duration, in seconds, for pause (,) option in Dial command and pause between command re-executions for Repeat (>)command S9= +006 Set duration, in tenths of a second, of remote carrier signal before recognition (Ignored if in non-FSK or half-duplex operation) S10= +007 Set duration, in tenths of a second, modem waits after loss of carrier before hanging up S11= +070 Set duration and spacing, in milliseconds, of dialed Touch-Tones EXTENDED S-REGISTERS, "ATSn=x" Command Function and description +Default /Reference S13= bit dec hex Bit-mapped register +000 1 2 2 Capture modem manufacturer information during V.42 handshake, can be displayed at ATI2 "Last Speed/Protocol" line if available (Flash or ZyXEL stands for ZyXEL connection) EXTENDED S-REGISTERS, "ATSn=x" Command Function and description +Default /Reference S14= bit dec hex Bit-mapped register: +002/*M0 0 0 0 Auto-handshake on Originate mode in leased line operation 1 1 Auto-handshake on Answer mode in leased line operation*M1 1 0 0 Grant Remote Digital Loopback test &T4 2 2 Deny Remote Digital Loopback test &T5 3,2 0 0 Dial-up line &L0 4 4 2-wire leased line &L1 8 8 4-wire leased line &L2 5,4 0 0 Internal clock &X0 16 10 External clock &X1 32 20 Remote clock &X2 7,6 0 0 Asynchronous data format &M0 64 40 Asynchronous command, synchronous data &M1 128 80 Direct asynchronous no data buffering &M2 192 C0 Synchronous &M3 S15= bit dec hex Bit-mapped register +130 0,1 0 0 Even parity 1 1 Odd parity 2 2 No parity 2 0 0 1 stop bit 4 4 2 stop bits 4,3 0 0 10 bit character length *C0 8 8 11 bit *C1 16 10 9 bit *C2 24 18 8 bit *C3 7-5 0 0 Profile 0 as active settings after power on Z0 32 20 Profile 1 as active settings after power on Z1 64 40 Profile 2 as active settings after power on Z2 96 60 Profile 3 as active settings after power on Z3 128 80 Factory default as active settings after power on Z4 S16= bit dec hex Test status register +000 0 0 No test in progress 1 1 Analog Loopback test in progress 3 3 Local Digital Loopback test in progress 6 6 Remote Digital Loopback test in progress 7 7 Remote Digital Loopback with self test in progress 8 8 Analog Loopback with self test in progress S17= bit dec hex Bit-mapped register +018 0 0 0 Disable Secondary Channel *Sn 1 1 Enable Secondary Channel S42b0 1-4 0-30 0-1E Leased line transmission power level, to attenuate 0 to -15dB or -12 to -27dB when S35B3 is set *Pn S35b3 5 0 0 Normal dial 32 20 Reverse dial, answer mode on line DR 6-7 0 0 AT command set *In 64 40 V.25 bis command set 128 80 Dumb mode S18= bit dec hex Force modem to fix baud rate when idle +000 0 0 0 Disable fixed baud function &Bn 1-15 1-F Enable baud rate fixing at idle, baud rate value settings same as S20 value (dec) 1-15 S44b6 S19= 0-36 hex 0-24 Modem type, same setting value as &Nn +000 &Nn S20= dec hex DTE speed (bps). Auto detected from AT command +002 0 0 76800 1 1 57600 dec hex DTE 2 2 38400 9 9 4800 3 3 19200 10 A 3600 4 4 16800 11 B 2400 5 5 14400 12 C 1800 6 6 12000 13 D 1200 7 7 9600 14 E 600 8 8 7200 15 F 300 S21= bit dec hex Bit mapped register +178 0 0 0 Maintain non-error control connection when error control handshake fails *E0 1 1 Drop connection when error control handshake fails *E1 1-2 0 0 Speaker always Off M0 2 2 Speaker On until carrier is detected M1 4 4 Speaker always On M2 6 6 Speaker On after last digit is dialed out until carrier detected M3 3 0 0 DSR always On &S0 8 8 According to CCITT (see also S44b4, S41b5) &S1 4 0 0 CD always On &C0 16 10 CD tracks presence of data carrier (see also S38b3) &C1 5 0 0 CTS follows RTS, in synchronous mode &R0 32 20 Ignore RTS (CTS always On), in synchronous mode &R1 6-7 0 0 Ignore DTR signal, assume DTR always On &D0 64 40 108.1, DTR Off-On transition causes dial of the default number &D1 128 80 108.2 Data Terminal Ready, DTR Off causes the modem to hang up and return to command state &D2 192 C0 108.2, DTR off causes the modem to hang up and reset the modem to profile #0 after DTR dropped &D3 S23= bit dec hex Bit mapped register +105 0 0 0 Command echo disabled E0 1 1 Command echo enabled E1 1 0 0 Tone dial T 2 2 Pause dial P 2 0 0 Pulse dial make/break ratio=39% / 61% &P0 4 4 Pulse dial make/break ratio=33% / 67% &P1 3-5 0 0 ATX0 (See result code table) 8 8 ATX1 dec hex AT 16 10 ATX2 40 28 X5 24 18 ATX3 48 30 X6 32 20 ATX4 56 38 X7 6 0 0 Display result code in numeric format (see S35b7) V0 64 40 Display result code in verbose format V1 7 0 0 Modem returns result code Q0 128 80 Modem does not return result code (see also S40b1) Q1 S24= bit dec hex Bit mapped register +138 1-3 0-14 0-E Ring volume control, increments of 2 in decimal N0-7 5-7 32-240 20- F0 Speaker volume control, 32-240, increments of 32 in decimal value L0-7 S26= 0- 255 Set delay, in 10-millisecond units, between the RTS and modem's CTS response in synchronous mode +000 &Rn S27= bit dec hex Bit mapped register +156 0-2 0 0 No error control &K0 1 1 MNP4 + MNP3 (see also S41b0) &K1 2 2 MNP4 + MNP5 (see also S38b5, S41b0) &K2 4 4 V.42+MNP4 &K3 6 6 V.42 + V.42bis (compatible with &K2) &K4 3-5 0 0 Flow control disabled &H0 24 18 Hardware (RTS/CTS) flow control &H3 32 20 Software (XON/XOFF) flow control &H4 40 28 Reserved &H5 6,7 0 0 No response to poor signal quality *Q0 64 40 Retrain action taken if signal quality is poor *Q1 128 80 Adaptive rate (auto fall-back / forward) when signal quality changes *Q2 S41b2 192 C0 Disconnect when signal quality is poor *Q3 S28= bit dec hex Bit mapped register +068 0 0 0 Single phone line, RJ-11 phone jack &J0 1 1 Multiple phones/modem lines, RJ-11/RJ13 phone jack &J1 1 0 0 Panel key normal *L0 2 2 Panel key locked *L1 2-3 0 0 Destructive, expedited break &Y0 4 4 Non-destructive, expedited break &Y1 8 8 Non-destructive, unexpedited break &Y2 4-5 0 0 No guard tone &G0 16 10 Reserved &G1 32 20 1800 Hz guard tone &G2 6 0 0 DTE/DCE rate follows line rate (see also S18,S41b6) &B0 64 40 DTE/DCE rate fixed at DTE setting &B1 7 0 0 Select V.22 for 1200 bps communication B0 128 80 Select Bell 212A for 1200 bps communication B1 S29= 0-9 0-9 Set default dial phone number pointer, +000 use AT&Zn=s to store phone numbers *D S30= dec hex Bit mapped register +000 0 0 Disable dial-backup *Bn 1-10 1-10 Enable dial-backup, sets dial-backup phone # pointer at location (n -1) in the EEPROM. S44b2 S31= 0- 255 Holds the ASCII decimal value of the XON +017 S32= 0- 255 Holds the ASCII decimal value of the XOFF +019 S34= 0- 255 Dial-Backup restoral look-back timer, in minutes +030 S35= bit dec hex Bit mapped register +000 0 1 1 Reserved 1 2 2 Disable aborting from terminal during modem handshaking 2 4 4 V.26 alternative A &N11 3 8 8 Extend the attenuation of leased or 4W cellular line transmission power by -12dBm, add -12dBm to *Pn (S17b1) or S49 low 4 bits S17b1 *Pn 4 16 10 When Data/Voice switch is pushed, modem will dial the default number, only for U-1496E & U-1496R *Dn S29 5 32 20 Enable Selective Reject in V.42 6 64 30 Enable password protection to profile saving, when "AT&Wn" is issued, and the n profile in the memory has this bit on, supervisory password will be requested &Wn 7 128 60 Enable extended numerical result codes from 30-39 when an error correction connection is made, use with ATV0, see result code table V0 S23b6 S36= bit dec hex Bit mapped register +000 0 0 0 Deny remote request for configuration *F0 1 1 Grant remote request for configuration *F1 1 0 0 Write from local profile to remote profile *Wab 2 2 Read from remote profile to local profile *Rab 5-7 Security function control register 0 0 Disable security function *G0 32 20 Enable type 1 security, with password check (ZyXEL to ZyXEL only) *G1 64 40 Enable type 1 security, with password check and call-back (ZyXEL to ZyXEL only) *G2 96 60 Enable type 2 security, with password check *G3 128 80 Enable type 2 security, with password check and call-back *G4 160 A0 Enable type 2 security, with password check and call-back, remote site enter the call-back number *G5 S37= bit dec hex Bit mapped register +000 0-3 0-5 0-5 0-5, remote profile number *Wab 4-7 0-80 0-50 0-5, local profile number *Rab S38= bit dec hex Bit mapped register +000 0 1 1 Repeatedly dialing default number *Dn S29 3 8 8 DCD on/off sequence follows UNIX standard, DCD high before connect message is sent, DCD off after last DCE response is sent &C1 S21b4 4 16 10 Auto-mode fax receiving disabled &N0 5 32 20 Disable MNP5 &Kn S39= bit dec hex Bit mapped register +000 2 4 4 Answer in originating mode ATA 3 8 8 Class 2 Fax Bitfax compatibility: +FCON at 2400 next phase at 19200 4 16 10 Class 2 Fax mode DTE shifting: +FCON at current DTE, shift to 19,200 when entering into the next phase S40= bit dec hex Bit mapped register +000 1 2 2 No result code displayed in answer mode Q2 2 4 4 Enable Caller Number Delivery (see also S42 bit 2) S42b2 *T 3 8 8 Distinctive Ring Type #1: 1.2/2 s on, 4 s off 4 16 10 Distinctive Ring Type #2: 0.8 s on, 0.4 s off, 0.8 s on, 4 s off 5 32 20 Distinctive Ring Type #3: 0.4 s on, 0.2 s off, 0.4 s on, 0.2 s off, 0.8 s on, 4 s off 6 64 40 Distinctive Ring Type #4: 0.3 s on, 0.2 s off, 1 s on, 0.2 s off, 0.3 s on, 4 s off S41= bit dec hex Bit mapped register +000 0 1 1 Special MNP compatibility (see also S27b0, S38b5) &Kn 1 0 0 Flag idle in V.25bis HDLC *I1 2 2 Mark idle in V.25bis HDLC S17b6 2 4 4 Disable retrain abort, up to 5 min. for special satellite line condition S27b6 *Qn 3 8 8 Enable CCITT signals 140 and 141 on EIA-232D interface 4 16 10 In X2-X7 setting, modem waits for S6 seconds before dialing and ignores dial tone detection 5 32 20 DSR follows DCD and pulses (see also S44b4) &Sn 6 64 40 Force S0>=2 S0 7 128 80 Ignore calling tone, not to be used as fax detection S42= bit dec hex Bit mapped register +000 0 0 0 Normal secondary channel, 75-2400 bps (U-1496, U-1496RN) S17b0 1 1 Special secondary channel, fixed 2400 bps (U-1496, U-1496RN) 1 2 2 Reserved 2 4 4 CND message will be forced on even if ATQ2 is set (see also S40 bit 2) Q2 S40b2 3 8 8 Disable escape sequence code in answer mode 4 16 10 Disable V.17, 14,400 Fax in calling mode, no effect to answering mode &N32 5 32 20 Disable Data/Voice button 6 64 40 Disable "RINGING" result code Xn S43= bit dec hex Bit mapped register +000 0 1 1 Disable ZyXEL 16800 in Multi-Auto mode &N0 1 2 2 Disable ZyXEL 19200 in Multi-Auto mode S44= bit dec hex Bit mapped register +000 2 4 4 Semi-auto dial backup, modem will wait for user's confirmation from Front Panel before dialing attempt *Bn S30 3 8 8 ATDSn initiates auto-dial of the stored numbers consecutively until a connection is made &Zn S38b0 4 16 10 DSR follows DTR (see also S41b5) &Sn 5 32 20 Enable V.13, half duplex simulation 6 64 40 When select with &B0: DTE fixed at 19200 when the link speed is above 9600, DTE fixed at 9600 if link speed is 7200, otherwise, DTE follows link speed &B0 S18 When Select with &B1: DTE fixed at current when an ARQ connection is made, when non-ARQ connection is made, DTE follows the logic as when &B0 is set &B1 S49= bit dec hex Bit mapped register +000 0-3 0-15 0-F Transmission power level setting, used only with Cellular option, low 4 bits to attenuate 0 to 15dB S35b3 7 0 0 For Cellular only, modem is installed in office 7 128 80 For Cellular only, modem is installed in mobil In Reference Column, "AT" is omitted when AT command is referred to +nnn Manufacture default, when listed in Reference Column bit S-register bit number, b, used in ATSr.b=n, ATSr.b=? dec Decimal value, x, used in ATSn=x hex Hex value, h, used in U-1496 and U-1496R for setting "STATUS REGISTER" manually from front panel EIA-232D INTERFACE DB25 Signal Flow CCITT EIA Pin# Signal Description DTE DCE Signal Signal1 Protective Ground ®--¯ 101 AA 2 Transmit Data (TXD) --¯ 103 BA 3 Receive Data (RXD) ®-- 104 BB 4 Request To Send (RTS) --¯ 105 CA 5 Clear To Send (CTS) ®-- 106 CB 6 Data Set Ready (DSR) ®-- 107 CC 7 Signal Ground ®--¯ 102 AB 8 Carrier Detect (CD) (DCD) ®-- 109 CF 15 Synchronous Transmitter Timing ®-- 114 DB 17 Synchronous Receiver Timing ®-- 115 DD 18 Local Analog Loopback test --¯ 141 20 Data Terminal Ready (DTR) --¯ 108/2 108/1 CD 21 Remote Digital Loopback test --¯ 140 22 Ring Indicator (RI) ®-- 125 CE 24 Synchronous Transmitter Timing --¯ 113 DA 25 Test Indicator ®-- 142 ZFAX / RCVFAX COMMAND LINE OPTION ZFAX [cmdtype cmdoptions] [options] cmdtype: cmdoptions Format: 0-TSR ZFAX zfax 0 1-Send Fax zfax 1 filename dest.faxnum 2-Print Fax zfax 2 filename 3-Convert File zfax 3 filename dest.file 4-View Fax zfax 4 filename 5-Poll Fax zfax 5 dest.faxnum 6-Send Message zfax6 filename dest.phone num. options: /? Display this help screen /u Remove TSR /c:# COM port number, 0-6 /r:# Page Resolution, 0-1 /f:# Dest.file format, 0-3 /t:# Printer type, 0-7 /p:# Printer port, 0-2 /g:# Graphic device, 0-4 /n:# Language Code, 0-4 RCVFAX cmdtype [options] cmdtype: Format: 0-Background rcvfax rcvfax 0 1-Answer and rcvfax rcvfax 1 2-Receive fax data only rcvfax 2 options: /? Display this help screen /s Stop the TSR temporarily /g Resume the TSR after an /s operation /u Remove the TSR if possible /p:# COM port number, #=0-3 /r:# Answer after # of ring(s), #=0, not to auto-answer Hot key: Left-Shift + Tab to manual answer Async. Hardware Flow Control Cable Connection Modem DTE DCE(Null) MAC NeXT 68040 (DCE)DB25 Signal DB 9 DB25 Mini 8 Mini 82 TXD 3 3 3 3 3 RXD 2 2 5 5 4 RTS 7 5 1 6 5 CTS 8 4 2 8 6 DSR 6 20 7 Ground 5 7 4,8 4 8 CD(DCD) 1 20 2 20 DTR 4 6,8 1 1 22 RI 9 ZyXEL U-SERIES HIGH SPEED MODEM/FAX with VOICE QUICK-REFERENCE GUIDE U-1496 U-1496 plus U-1496E U-1496E plus U-1496R U-1496RN U-1496B U-1496B plus U-1496C ZyXEL 4920 East La Palma Avenue Anaheim, California 92807 Tel: 714-693-0808 Fax: 714-693-8811 Tech. Support: 714-693-0808 BBS Tech. Support: 714-693-0762 (Rev qr600/atqr600.sam, 04/01/1993) ZyXEL U-SERIES HIGH SPEED MODEM/FAX with VOICE QUICK-REFERENCE GUIDE U-1496 U-1496 plus U-1496E U-1496E plus U-1496R U-1496RN U-1496B U-1496B plus U-1496C ZyXEL Communications Corp. 2F., 58 Park Avenue II Science-Based Industrial Park Hsinchu, Taiwan 30077 R.O.C. Tel: 886-3578-3942 Fax: 886-3578-2439 BBS Tech. Support: 886-3578-7045 (Rev qr506/atqr506.sam, 02/08/1993) COM port 0 com1 irq4 1 com2 irq3 2 com3 irq4 3 com4 irq3 4 com3 irq5 5 com4 irq2 6 user def. Page Res. 0 Normal 1 High Dest.file 0 FAX 1 PCX 2 TIFF 3 PRN Printer type 0 Epson FX 1 Epson LQ 2 HP II Let. 3 HP II Leg. 4 HP II A4 5 HP III Let. 6 HP III Leg 7 HP III A4 Prt. Port 0 Lpt 1 1 Lpt 2 2 Lpt 3 Graphic dev. 0 Auto Det. 1 VGA 2 EGA 3 CGA 4 Hercules Language 0 English 1 Chinese 2 Chinese II 3 Germany 4 Italian