Zyxel U-336R/RE - Manuals

vi 1. The Council Directive 89/336/EEC of 3 May 1992 on theapproximation of the laws of the member states relation toElectro Magnetic Compatibility. (EMC Directive) 2. Council Directive 91/263/EEC of 29 April 1991 on theapproximation of the laws of the Member States concerningtelecommunication termi...

viii Contents ZyXEL Limited Warranty iiFCC Part 15 Information iiiInformation for Canadian Users ivContacting ZyXEL vi 1 Introduction 1 What This Manual Covers 1Modem Features 1 Standard Features 1Intelligent Features 2Fax Compatibility 3Technical Specifications 3 Unpacking Your Modem 4 Enclosed Equ...

ix Dialing using the ATD Command 17Auto-Answer and Hook Controls 18 Making Your First Connection 18Quick Tips when issuing AT Commands 19 Modem Result Codes 21Viewing S Register Values 22Changing S Register Values 22 Non-Volatile Memory 23 Storing Phone Numbers 23Dialing Stored Phone Numbers 23Savin...

x Connecting to a Leased Line 35 Line Type Setting 35Power Level Setting 36 Leased Line Handshaking 36 Manual Connect 36Auto Handshake 36 Leased-Line Dial Backup 37 Dial Backup 37Aborting from Leased-Line Operation 38 Terminating a Leased Line Connection 38 6 Special Functions 39 Security Functions ...

xi 8 AT Command Set Summaries 77 Basic AT Command Set 77 Description of ATI2 Output: 80 Extended AT& Command Set 83Extended AT* Command Set 89 9 Status Registers & Result Codes 92 S-Register Descriptions 92 Basic S-Registers "ATSn=x" 92Extended S-Registers "ATSn=x" 93 Result ...

xii 12 Terminal Pinouts 133 Terminal Blocks 133PC Serial Port Pinouts 134Macintosh Serial Port Pinouts 135 13 Index 137

Introduction 1 1 Introduction What This Manual Covers Congratulations on the purchase of your U-336R/RE modem - oneof ZyXEL's premier high-performance products. The U-336R/REmodem cards are world renown for their ability to maintain ultrahigh speeds and clear, quality connections while communicating...

2 Introduction • 14 LED indicators (RE/RD). • 15 LED indicators (R). • Extended AT command set with V.25bis. • Operates on 2-wire dial-up or 2-wire leased line (RE). • Operates on 2-wire dial-up or 2/4-wire leased line (R). Intelligent Features • Automatic data, and fax call detection allows you to ...

Introduction 3 • EDR (extended Distinctive Ring). • Flash EPROM memory lets you easily upload new firmware,providing you with easy access to new features. • ZyXEL exclusive Kernel Recovery Mode for no hassle recoveryfrom failed flash uploads - no factory repairs. Fax Compatibility • EIA Class 1, 2, ...

4 Introduction • Line interface: 2-wire dial-up or 2-wire leased line (RE). • Line interface: 2-wire dial-up or 2/4-wire leased line (R). • Call progress monitoring: dial tone, busy, and ring backdetection. • Audio Monitor: programmable volume control. Unpacking Your Modem Enclosed Equipment Before ...

Introduction 5 • Computer terminal. • Available PC serial port with a high-speed 16550 UART. • Standard "straight-through” RS-232 cable (pins 1-8, 20, 22). • Available telephone jack. • Available AC wall outlet. • Telephone line from your telephone company (dial-up or leasedline). • Data and fax...

Installation 7 2 Installation This chapter covers the steps required to install your U-336R/REmodem into a ZyXEL RS-1612 rack system. A separatecomprehensive manual containing rack system information isincluded with your modem rack chassis. U-336R/RE Modem Card The U-336R front panel consists of fif...

8 Installation LED Name ON Blinking TXD TransmitIndicator The DTE is sendingdata to modem fortransmission. RXD ReceiveIndicator The modem issending receiveddata to the DTE. CD Carrier Detect The modem senses avalid data carrier onthe line. DTR Data TerminalReady The attachedcomputer is ready tosend ...

Installation 9 LED Name ON Blinking SQ Signal Quality Modem senses agood quality signal. Modemsensesmarginalsignal quality. The following LED is for the U-336R only: LED Name ON Blinking LL Leased LineMode Indicator Modem is in LeasedLine Mode. There are two toggle switches on the U-336R/RE frontpan...

10 Installation Installing the modem card The rack system in which you will install your modem has sixteenavailable modem slots. You may use any slot for a card withoutregard to the slot number or sequence. To install a card: 1. Hold the modem card by the front and slide it into an availableslot. 2....

Installation 11 • U-336R Section 3 (terminals 5 ,6 ,7 & 8) For leased lineconnection. Connect to Computers Each modem slot has a corresponding 25-pin RS-232 femaleconnector on the rear panel. Connect a cable from the desiredcomputer to the RS-232 connector for the desired modem. Hooking Up Power...

12 Installation 1496 modem. In many cases, the commands for these modemsare identical. Select the following communication settings: Setting Value Baud rate 57,600bps Data bits 8 Parity None Stop bits 1 Flow control Hardware Initialization string AT&F Port COMn* O O N OTE : W HEN SPECIFYING A POR...

Basic Modem Operation 15 3 Basic Modem Operation This chapter covers the basic commands and techniques involved inmodem operation. In many cases, this is the only information youwill need in order to get up and running with communicationsoftware, and to start making connections with your modem. Unde...

Basic Modem Operation 17 Your modem responds: OK This confirms that the modem and your computer arecommunicating correctly. To test the telephone line connection issue the manual answercommand. Type: ATA<Enter> Your modem will pick up the phone line, and try to communicate.Normally, this comma...

18 Basic Modem Operation Pausing During Dialing: ATDT 9,,555 1212 O O N OTE : T HE PAUSE TIME FOR EACH COMMA IS DEFINED BY S R EGISTER S8. D EFAULT IS 2 SECONDS PER COMMA . Dialing Without Waiting for Dial Tone: ATX0D, 555 1212 Originating a call using an Answer Tone: ATDT 555 1212,,,,,,R Redialing ...

Basic Modem Operation 19 Start the terminal program by double-clicking the Test Connectionicon. When the terminal window appears, enter the dial commandwith ZyXEL’s BBS as the phone number. Type: ATDT17146930762<enter> (Omit the ‘1714’ ifyou are in this area code) The modem will go off-hook, d...

20 Basic Modem Operation terminal window when you type, the modem’s echo setting isprobably set to off. In this case, issue the ATE1 command. • When a command is successfully issued and accepted, a modemresponds with a “Result Code.” Your modem supports both“verbose” result codes (i.e. “OK”), and “n...

Basic Modem Operation 21 AT Command Set/Type Example S-Register command ATS0=1 S-Register bit-mapped command (set S- Register bit 1 equal to 1) ATS13.1=1 S-Register inquiry command ATS0? Or ATS13.1? You may browse the lists of available commands for each commandset by using the on-line help commands...

22 Basic Modem Operation modem uses. By default, your modem uses result codes equivalentto the ATX5 command. The result code options will be covered more thoroughly in laterchapters. Viewing S Register Values Status registers (or "S-registers") contain values that determine themodem’s operat...

Basic Modem Operation 23 Non-Volatile Memory Your modem has an amount of memory set aside for storing userinformation such as frequently used phone numbers and defaultcommand settings. The latter is particularly useful when using yourmodem to call a variety of different locations that require differ...

24 Basic Modem Operation Saving Settings and User Profiles There are some cases where you may wish to save the settings youhave made as the default settings that are recalled when yourmodem is powered up. The AT&WZ command selects the currentsettings as the power-on profile. There are four profi...

Basic Modem Operation 25 your software supports it, replace the 16450 UART with a 16550model. This newer chip has an internal buffer and generates aninterrupt for up to every 16 characters (several trigger levels areavailable). With this UART installed, you may drive your serial portat 57600 bps and...

26 Basic Modem Operation The serial port is 16550-compatible for most communicationsoftware usage. It has a speed of up to 460.8Kbps and data losserrors will not occur when working with a ZyXEL modem's serialport. This solves high-speed communication problems in Windowsand other multi-tasking system...

Basic Modem Operation 27 readily available as PD, shareware or commercial software. One ofthe most powerful shareware programs available is ZTerm. Fewer programs are available to make use of the ZyXEL's faxfeatures. One program which has found wide acceptance is FaxSTFwhich can be installed like a p...

28 Basic Modem Operation Depending on your Unix setup, the cable and software used, youmay have to disable carrier detection using AT&C0. Unix Software Tips In order to use your ZyXEL modem from a terminal screen or anX-Windows application, you need a program such as Minicom orSeyon. If you wish...

Synchronous Mode Operation 29 4 Synchronous Mode Operation This chapter introduces you to the use of the U-336R/RE forsynchronous operation. The modem can be used as a synchronousmodem when it is connected to a synchronous computer orterminal. It is of course necessary to make sure that the remotemo...

30 Synchronous Mode Operation Syntax Command with Parameters* Description CRN CRN <dialstring>** Call request with numberprovided. CRS CRS n Call request with number frommemory, 0 # n # 49;n is the memory location. PRN PRN n; <number> Saves <number> to address n(0 # n #49). RLN RLN...

Synchronous Mode Operation 31 carrier and sends the data to the receiving DTE along with theclock. There are three types of transmission synchronous clocksources to choose from: 1. The internal clock is the one that suits most applications and isthe default; in this case, the clock signal is generat...

32 Synchronous Mode Operation Command State Options For synchronous data communication, there are two options youcan choose from to define how the modem will operate in thecommand state. SYNCDATA AT&M1 The modem accepts asynchronouscommands in command state, butexchanges data synchronously in da...

Synchronous Mode Operation 33 4. Manual dial: Set the modem to synchronous mode (&M1 or&M3), then dial a number from a telephone set. When you hearthe answer tone, type ATD (if &M1 is set). The modem will gointo synchronous operation after connection. Answering from Synchronous Mode Auto...

Leased Line Operation 35 5 Leased Line Operation A leased line is a permanent telephone line connection between twofixed points. It can be dedicated copper wires or a leased telephonecircuit from the telephone company. Four-wire leased lines use onepair of wires to transmit data and a second pair to...

36 Leased Line Operation Power Level Setting Your modem’s leased-line mode transmission power level can beadjusted from 0 dBm to -27 dBm in 1 dBm increments. AT-Command Description AT*P0. . .AT*P15 The default is -9dBm. The adjustable range isfrom 0 to -15dBm, effective in leased-lineoperation only....

Leased Line Operation 37 configuration. Be sure that one modem is set to originate mode andthe other to answer mode. AT-Command Description AT*M0 When operating over a leased line, modem willhandshake in originate mode. (Default) AT*M1 When operating over a leased line, modem willhandshake in answer...

38 Leased Line Operation The originating modem will try to dial the number up to nine timesor until a 3-minute time-out is activated. If the dial backup attemptfails, the originating modem will go back to try the leased lineconnection. If this fails, it will try the dial-up line again. It will try t...

Special Functions 39 6 Special Functions This chapter describes special features of the U-336R/RE, andoffers instructions on how each is used. Security Functions Your modem provides security that prevents unauthorized usersfrom making connections. Two types of security functions areprovided. • Type ...

40 Special Functions • With level 1 security, the local modem will maintain theconnection if the password is OK, otherwise the linedisconnected. • With level 2 security, redial the phone number correspondingto the dial-in password. The line simply disconnects if thepassword does not match. User Pass...

Special Functions 41 The following commands will enabledifferent types and Verify: (Enter the newsupervisor password again) ******** OK The command AT*Hn will modify the nth user password. You willbe prompted to enter the supervisor password first and then beprompted to enter the nth user password. ...

42 Special Functions Remote Configuration Remote configuration for your modem is provided as a profile byprofile batch mode. When on-line, the remote modem’s currentconfiguration or one of its profiles can be read into one of the localmodem’s user profiles. This profile is modified locally and the l...

Special Functions 43 The remote profile read and write commands - *Rab and *Wab -only work in the on-line condition. The connection speed and modedo not matter. The remote modem must be set to accept remoteconfiguration by executing the AT*F1 command. The AT*F0command will set the modem up to deny r...

44 Special Functions There are two kinds of caller information message formats sent bythe phone company: • One is the single message format which includes date, time, andcaller ID. • The other is the multiple message format which also includesthe caller name as registered with the phone company. The...

Special Functions 45 Brent Harper RING In the multiple message format, if the caller’s number and name areavailable, the ring message will display both: RING TIME: MM-DD hh:mm CALLER NUMBER: <Caller_ID> CALLER NAME: <Caller_Name> RING Here is an example: RING TIME: 04-28 12:30 CALLER NUM...

46 Special Functions O O N OTE : P LEASE REFER TO THE B ELLCORE T ECHNICAL A DVISORY DOCUMENT TR-NWT- 000030 FOR THE EXACT DATA FORMAT . T HE ABOVE C ALLER ID SCHEME APPLIES TO THE N ORTH A MERICA ONLY . D IFFERENT COUNTRIES MAY EMPLOY DIFFERENT C ALLER ID SCHEMES , M AKE SURE THE SCHEME USED IN YOU...

Special Functions 47 ring types is the two-second ON part of the ring signal. Itcomprises a long, double short, or triple short ring. S-register S40 bits 3-6 are used for distinctive ring control. Eachbit controls the answering of a particular ring type. Setting a bit to“1” (on) enables answering, s...

Special Functions 49 to press the START button, the caller can press a designatedDTMF tone, which will activate the modem to report andsubsequently be ordered to answer the fax call. Setting Up EDR The new EDR can be used at home where multiple phones areinstalled in parallel. Once this function is ...

50 Special Functions EDR detection (either CNG or DTMF tones) will be disabled oncedetection occurs. However, a customer’s program might notanswer because the setting of the software may require multiplerings to answer. S51 bits 0-1 control the number of rings that themodem will report once the CNG ...

Special Functions 51 4. Set S51.2=1 to enable DTMF tone detection. It is reported asRING. If the remote fax machine does not generate the CNGtone, ask a fax caller through your answering machine messageto press “*” (or any other DTMF key) if he or she wants tosend a fax. Save the settings in a profi...

Fax Operation 53 7 Fax Operation In the sections below, we will describe how the U336R/RE worksas a fax machine, the ITU-T T.30 fax protocol, the Class 1, 2, and2.0 fax commands and ZyXEL extended fax AT commands. Alsocovered are the status report result codes, the flow control protocolassociated wi...

54 Fax Operation ITU-T T.30 Fax Protocol The U-336R/RE takes full control of the ITU-T T.30 fax protocol,also known as G3 fax handshaking signals and procedures. Yourmodem initiates and terminates fax calls, manages communicationssessions, and transports image data relieving the computer faxsoftware...

Fax Operation 55 Class 1 commands control on-line modem negotiation while Class 2commands allow the modem to do many negotiationssimultaneously. The Class 1 protocol uses the modem to transmitfax data only. The complete organizational overhead for thisprotocol is handled by the connected computer. T...

56 Fax Operation Command Value Descriptionunits. +FRS=n 0-255 Wait for silence, in 10 ms units. +FTM=<MOD> Transmit data with <MOD> carrier. +FRM=<MOD> Receive data with <MOD> carrier. +FTH=<MOD> Transmit HDLC data with <MOD>carrier. +FRH=<MOD> Receive HDLC ...

Fax Operation 57 Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read current setting. Supported Commands (per TIA PN2388 8/20/90) Command Value Description +FAA=n Auto-answer mode paramet...

58 Fax Operation Command Value Description parameter. n=0 No copy quality check capability. n=1 Only check 1D phase C data. n=2 Check both 1D and 2D phase C data. +FCR=n "Capability to receive" parameter n=0 DCE will not receive message data orpoll a remote device. n=1 DCE receives message d...

Fax Operation 59 Command Value Descriptionbf=0 Disable binary file transfer. st=0 Minimum scan time/line: 0 ms. st=1 Minimum scan time/line: 5 ms. st=2 Minimum scan time/line:10 ms(normal);5 ms (fine). st=3 Minimum scan time/line:10 ms. st=4 Minimum scan time/line:20 ms(normal); 10ms (fine). st=5 Mi...

60 Fax Operation Command Value Description +FK Regular fax abort command. +FLID="string" Local ID string parameter. +FLO=n Flow control options: n=0 No flow control. n=1 Set XON/XOFF software flowcontrol. n=2 Set CTS/RTS hardware flow control. +FLPL=n Document for polling command: n=0 The DT...

Fax Operation 61 Command Value Descriptionn=5 Page good; procedure interruptrequested. +FREL=n Phase C received EOL alignment: n=0 The EOL patterns are bit aligned asreceived. n=1 The last received bits of EOL patternsare byte aligned by the DCE, withnecessary zero fill bits inserted. Referto TIA PN...

62 Fax Operation Response Value Function and Description t+FET:n Post page message response; refer to the+FET=n command. +FHNG:n Call termination status response. n=00 Normal and proper end of connection. n=10 Transmit error on phase A hang up code. n=20 Transmit error on phase B hang up code. n=40 ...

Fax Operation 63 Class 2.0 Command Set Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read the current setting. Supported Commands Command Value Description +FAA=n Auto-answer mode parame...

64 Fax Operation Command Value Descriptiontq=0 DCE Transmit Copy Quality Checkingdisabled. tq=1 DCE Transmit Copy Quality Checkingenabled. tq=2 DCE Transmit Copy Quality Correctionenabled. +FCR=n "Capability to receive" parameter n=0 DCE will not receive message or poll aremote device. n=1 D...

Fax Operation 65 Command Value Description and reported using the +FVO response. +FIP Initialize facsimile parameters to factorydefault. +FIS=vr,br,wd,ln,df,ec,bf,st Current session parameter. refer to+FDCC Class 2 command in previoussection parameter settings. +FKS Session termination command. +FLI...

66 Fax Operation Command Value Description (+FCS parameter is still loaded) tpr=1 Transmitter Parameters are reported.+FCS: response reports are generated. idr=0 ID Strings are not reported. +FTI: +FCI:and +FPI: response reports aresuppressed. idr=1 ID Strings are reported. +FNF:, +FNS:and +FNC: res...

Fax Operation 67 Command Value Description0-64(HEXvalue) with negotiated number of pixels)required for a page consideredacceptable. The percentage of good lineswould be computed by the equation:100 x (<lc> - <bl>) / <lc>lc: total line count as reported in the+FPS: response.bl: bad ...

68 Fax Operation Response Value Function and Descriptionprocedure interrupt requested. ppm=4 Another document next, procedureinterrupt requested. ppm=5 No more documents or pages, procedureinterrupt requested. +FHS:<hsc> Call termination status: hsc=0-0F Call placement and termination. Refer t...

Fax Operation 69 Response Value Function and Description +FNS:"NSS FIFstring" Report NSS (non-standard Setup) frame. +FPI:"CIG IDstring" Report remote ID response-PollingStation ID (CIG). +FPO Remote polling indication. +FPS:ppr,lc,blc,cblc,lbc .30 phase C page reception response: pp...

70 Fax Operation Extended Fax AT Command Set Extended Fax AT Commands are unique to ZyXEL modems. Thecomputer controls the modem through a set of extended fax ATcommands and the modem responds with a set of status reportresult codes. During data state, compressed fax image data isflowing between the...

Fax Operation 71 Command Functionmodem will wait for DC2 at the beginning of everypage. The DTE software should detect the pageseparator RTC and then sends the DC2 to receivethe next page of fax data. This mode is used with aBBS receiving faxes. #B2 This mode is for the polling feature of the modem....

72 Fax Operation Command Function #C2 Set minimum scan line time capability of thereceiver: 10 ms at 3.85 line/mm, T(7.7)=T(3.85). #C3 Set minimum scan line time capability of thereceiver: 20 ms at 3.85 line/mm, T(7.7)=1/2T(3.85). #C4 Set minimum scan line time capability of thereceiver: 40 ms at 3....

Fax Operation 73 CONNECT FAX See below. When a fax connection is successfully established, the modemreturns this message: CONNECT FAX/SnnnnVnTnRnLnCnP<string> This message includes the connection speed and the fax parametersexplained in the table below: Field Description Snnnn Fax connection s...

74 Fax Operation The basic AT commands ATV0 and ATQ1 do not affect the aboveCONNECT and DISCONNECT status report result codes. Themodem will always return the same status format as above. Flow Control In extended fax AT command mode, your modem always useshardware (CTS/RTS) flow control. The flow co...

Fax Operation 75 Fax Reception from a BBS Your modem can automatically detect data and fax calls and allowBBS software to receive faxes on the same phone line. To allowyour BBS to receive incoming faxes, make the following set-upchanges in your BBS: 1. Add the string #B1+FCLASS=6 to the init string....

76 Fax Operation String Error Level 1 ZyXEL 100 23 The following is a sample setting in the BINKLEY.CFG file for aBinkley system. Init AT&FX7S0=1#B1+FCLASS=6 ExtrnMail ZyXEL errorlevel

AT Command Set Summaries 77 8 AT Command Set Summaries Basic AT Command Set Command Options Function & Description Ref. A/ Re-execute the last command once. A> Re-execute the last command once orrepeat the last call up to 9 times. (Seealso S8) <any key> Terminate current connection atte...

78 AT Command Set Summaries Command Options Function & Description Ref. , Pause for a time specified in S8.Remaining digits will be dialed as in-band DTMF. ; Return to command state afterdialing. ! Hook flash. @ Wait for a 5 second silence beforeproceeding. R Reverse handshake (go on-line inAnsw...

AT Command Set Summaries 79 Command Options Function & Description Ref. I12 Display physical layer status. Ln n=0-74 * Speaker volume control. The higherthe value, the higher the volume. S24.4-6 Mn Speaker control. S21.1-2 M0 Speaker always OFF. M1 * Speaker ON until call is answered. M2 Speaker...

80 AT Command Set Summaries Command Options Function & Description Ref. Vn Sets display type for Result Codes. S23.6 V0 Display result code in numeric form.(See also S35.7 and the result codetable of 'ATXn') V1 * Display result code in verbose form. Xn n=0-75 * Result code options, see the Optio...

AT Command Set Summaries 81 Max Outstanding 8 Max Block Size 256 Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Errors 0 Round Trip Delay 10 Xmitter Underrun 0 Receiver Overrun 0 Last Speed/Protocol Connect 14400/ARQ/V42b Disconnect Reason Local Hangup Data...

82 AT Command Set Summaries Output Parameter Output Value Description Chars Received Number of characters modem has sent toDTE. Octets Sent Number of data bytes sent to remote modem Octets Received Number of data bytes received from remotemodem. Blocks Sent Number of data blocks sent to remotemodem....

AT Command Set Summaries 83 Output Parameter Output Value DescriptionCarrier Lost On-Line (Notdisconnected) Resent Expiration Protocol Error Break Time-out DTR Dropped Carrier Lost 1(No handshakingresponse)Security checkATH commandD/V hang up. Carrier Lost 2 (Remotehang-up, busy tone)Keyboard AbortI...

84 AT Command Set Summaries Command Options Function & Description Ref. &D3 Same as &D2 but DTR OFF causesthe modem to hang up and reset fromprofile 0. &F Load factory settings to RAM asactive configuration. &Gn Guard tone options. S28.4-5 &G0 * No guard tone (within USA, Can...

AT Command Set Summaries 85 Command Options Function & Description Ref. buffering. &M1 Asynchronous command,synchronous data. &M2 Direct asynchronous mode, no databuffering. &M3 Synchronous mode. &Nn Modem link mode options(DCE/DCE). (See also S43.7, S48.1) S19 &N0 * Multi-Au...

86 AT Command Set Summaries Command Options Function & Description Ref. &N11 V.26bis 2400 (models with 4-wireleased lines only) &N12 V.23 1200/75 (See also S48b3,S52b7) &N13 V.23 600/75 (See also S52b7) &N14 V.22bis 2400/1200 &N15 V.22 1200 &N16 V.21 300 &N17 V.32bis1...

AT Command Set Summaries 87 Command Options Function & Description Ref. &N66 V.34 19200 &N67 V.34 16800 &N68 V.34 14400 &N69 V.34 12000 &N70 V.34 9600 &N71 V.34 7200 &N72 V.34 4800 &N73 V.34 2400 &Pn Pulse dial make/break ratio. S23.2 &P0 * make / break, 3...

88 AT Command Set Summaries Command Options Function & Description Ref. &T6 Initiate Remote Digital Loop-back(RDL) test. &T7 Initiate Remote Digital Loop-backwith self test (RDL+ST). &T8 Initiate Analog Loop-back with selftest. (ALB+ST). &Vn View profile settings. &V0 View cu...

AT Command Set Summaries 89 Command Options Function & Description Ref. &Y2 Nondestructive, unexpedited. &Z? Display all the phone numbers storedin non-volatile RAM. &Zn=s n=0-49 Write phone number/s to NVRAM at location n (n=0-49) use AT*Dn orATS29=n to set the default dialpointer. ...

90 AT Command Set Summaries Command Options Function & Description Ref. *Fn Remote configuration enable. S36.0 *F0 * Deny remote configuration.*F1 Accept remote configuration(Remote Digital Loop-back must begranted, &T4). *Gn Security function selection. S36.5-7 *G0 * Disable security functi...

AT Command Set Summaries 91 Command Options Function & Description Ref. *M1 Set to Answer mode. *Pn n=0-15*P11 * Set leased line transmission powerlevel; ranges from 0 dBm to -15dBm (default: -11 dBm) (see alsoS35.3). S17.1-4 *Qn Action taken when line qualitychanges. S27.6-7 *Q0 No action to po...

92 Status Registers & Result Codes 9 Status Registers & ResultCodes S-Register Descriptions In most bit-mapped S-registers, the default bit value is 0. Non-0default values are followed by an asterisk. In some cases, defaultvalues are shown in the reference column preceded by +. Some bitsare ...

Status Registers & Result Codes 93 Command Function & Description +Ref. “W” dial modifier to wait for the dial tone.(See also S41b4) S7= Set duration, in number of seconds modemwaits for a carrier. +060 S8= Set duration, in seconds, for pause (,) option inDial command and pause between comma...

94 Status Registers & Result Codes Command bit dec hex Function and description Ref. back test request. 2 2 Deny Remote Digital Loop-back test. &T5 3,2 0 0 Dial-up line (Default). &L0 4 4 2-wire leased line. &L1 8 8 4-wire leased line. &L2 5,4 0 0 Internal clock (Default). &X...

Status Registers & Result Codes 95 Command bit dec hex Function and description Ref. 96 60 Profile 3 as active settingsafter power on. Z3 128 80 * Factory default as active settings after power on Z4 S16= dec hex Test status register. +000 0 0 No test in progress. &T0 1 1 Loop-back test in p...

96 Status Registers & Result Codes Command bit dec hex Function and description Ref. value settings (n) the sameas S20. S19= dec hex Modem connection mode,same. +000/&Nn 0-73 0-49 setting value as 'AT&Nn' command. S20= dec hex DTE speed (bps). Autodetected from ATCommand. +003 0 0 230400...

Status Registers & Result Codes 97 Command bit dec hex Function and description Ref. 25 19 62400 bps 26 1A 41600 bps 27 1B 31200 bps 28 1C 24960 bps 29 1D 20800 bps 46 2E 921600 bps Note: Only the speeds up to S20=15 are supported by auto speeddetection.S21= bit dec hex Bit mapped register. 0 0 ...

98 Status Registers & Result Codes Command bit dec hex Function and description Ref. 32 20 Ignore RTS (CTS alwaysON) in synchronous mode.(Default). &D2 6-7 0 0 Assume DTR always On. &D0 64 40 108.1, DTR OFF-ONtransition causes dial of thedefault number. &D1 128 80 108.2 Data Terminal...

Status Registers & Result Codes 99 Command bit dec hex Function and description Ref. 48 30 ATX6, error control resultcode enabled. X6 56 38 ATX7, error control resultcode enabled. X7 6 0 0 Display result code innumeric format (see S35.7) V0 64 40 Display result code inverbose format. V1 7 0 0 Mo...

100 Status Registers & Result Codes Command bit dec hex Function and description Ref. 0 0 No error control. &K0 1 1 MNP4 + MNP3 (see alsoS41.0) &K1 2 2 MNP4 + MNP5 (see alsoS38.5, S41.0) &K2 3 3 V.42+MNP4 &K3 4 4 V.42 + V.42bis (compatiblewith &K2) &K4 3-5 0 0 Flow contro...

Status Registers & Result Codes 101 Command bit dec hex Function and description Ref. bps communication. S29= 0-49 0-31 Set default dial phone number pointer, useAT&Zn=s to store phonenumbers. +000*D S31= 0-255 0-FF Holds the ASCII decimal value of the XON. +017 S32= 0-255 0-FF Holds the ASC...

102 Status Registers & Result Codes Command bit dec hex Function and description Ref. password will be requested.This bit in profile 0 alsoprotects the supervisorypassword from a hardwarereset. 7 128 80 Enable extended numericalresult codes from 50-71when an error correctedconnection is made. Us...

Status Registers & Result Codes 103 Command bit dec hex Function and description Ref. 128 80 Enable type 2 security withpassword check and call-back. *G4 160 A0 Enable type 2 security withpassword check and call-back, remote site enters thecall-back number. *G5 S37= bit dec hex Bit-mapped regist...

104 Status Registers & Result Codes Command bit dec hex Function and description Ref. +FCON at current DTE,shift to 19,200 whenentering into the next phase. S40= bit dec hex Bit mapped register. +000 1 2 2 No result code displayed inanswer mode. Q2 2 4 Enables caller ID detection 3 8 Enables typ...

Status Registers & Result Codes 105 Command bit dec hex Function and description Ref. 7 128 80 Ignore calling tone, not to beused as fax detection. S42= bit dec hex Bit mapped register. +000 1 2 2 Enables throughputaveraging. 2 4 4 CND message will be forcedon even if AT02 is set. 3 8 8 Disable ...

106 Status Registers & Result Codes Command bit dec hex Function and description Ref. between off-hook andmodem answering. 7 128 80 Modem hang-up if the linecondition does not permitmodem to run highest speedset by ‘&Nn’ command. S44= bit dec hex Bit mapped register. +000 3 8 8 ATDSn initiat...

Status Registers & Result Codes 107 Command bit dec hex Function and description Ref. (discontinuous) ring-backdetection. S45= dec0-255 hex0-FF Delay during which theCND silence detection isdisabled, in 20 ms units. (Seealso S46) +087 S46= dec hex CND silence detectioninterval. +003 0-255 0-FF T...

108 Status Registers & Result Codes Command bit dec hex Function and description Ref. 4 16 10 (Work with &D1 command)DTR ON will have themodem dial the defaultnumber and DTR OFF willhave the modem hang-upand reset to profile 0. Whenthe modem is idle (waitingfor command), it will notdial any ...

Status Registers & Result Codes 109 Command bit dec hex Function and description Ref. 1 1 Reports RING twice. 2 2 Reports RING four times. 3 3 Reports RING six times. 3-2 0 0 Disables DTMF tone. 4 4 Reports RING for a DTMFtone. 8 8 Reports RING ‘DTMF’ fora DTMF tone. 12 0C Reserved. 5-4 0 0 Disa...

110 Status Registers & Result Codes Command bit dec hex Function and description Ref. signal of the V.23handshaking sequence(Default). 128 80 Select ‘Space’ as the firstsignal of the V.23handshaking sequence. &N12 S56= dec hex +050 0-255 0-FF Hook flash detect time, in units of 10ms, country...

Status Registers & Result Codes 111 hex Equivalent Hexadecimal value. +nnn Factory default when listed in 'Reference' column. Note: 'AT' is omitted when an AT command is referred to inthe 'Reference' column.. Result Code Options "ATXn" Result Code Option Table The following table shows t...

112 Status Registers & Result Codes ATV0 ATV1 X0 X1 X2 X3 X4 X5 X6 X7 20 CONNECT 57600 % % % % @ 21 CONNECT 76800 % % % % @ 22 CONNECT 115200 % % % % @ 23 CONNECT 230400 % % % % @ 24 CONNECT 460800 % % % % @ 25 CONNECT 921600 % % % % @ 26 CONNECT 307200 % % % % @ 27 CONNECT 153600 % % % % @ 28 C...

Status Registers & Result Codes 113 DCE_Speed/Error_Control † Example: CONNECT 38400/V.32bis 14400/V.42bis $ <cr><lf>CONNECT DCE_Speed[/Error_Code]<cr><lf> Example: CONNECT 14400/ARQ # CONNECT DCE _Speed/Error_Code/Error_Control † Example: CONNECT 14400/ARQ/ MNP5 † Data c...

114 Status Registers & Result Codes NumericalV0 Verbose V1 NumericalV0 Verbose V1 53 CONNECT4800 61 CONNECT24000 54 CONNECT7200 62 CONNECT26400 55 CONNECT9600 63 CONNECT28800 56 CONNECT12000 64 CONNECT31600 57 CONNECT14400 65 CONNECT33600

116 Diagnostics & Troubleshooting 10 Diagnostics & Troubleshooting Diagnostics The U-336R/RE is equipped with several diagnostic capabilities: • Power-on Self Test • Analog Loop-back Test • Analog Loop-back with Self-Test • Local Digital Loop-back Test • Remote Digital Loop-back Test • Remot...

Diagnostics & Troubleshooting 117 O O N OTE : * ITEMS APPLICABLE EXCLUSIVELY TO U-336R INSTALLED IN RS-1612 RACK SYSTEM . Power-On Self Test At each power-up or upon a reset command from the panel, themodem will test the ROM code checksum, system RAM memory,DSP code checksum, DSP RAM memory, EEP...

118 Diagnostics & Troubleshooting 8 FR CALIBRATIONFAIL.... Analog circuit calibration error. Loopback Tests The Analog Loopback Test, Local Digital Loopback Test, RemoteDigital Loopback Test can all be initiated with AT commands fromthe terminal. Use the AT&T0 command to terminate the test. ...

Diagnostics & Troubleshooting 119 received from the remote modem will be returned to the remotemodem. This test is applicable when the remote modem does notprovide V.54 Remote Digital Loopback capability. This test can beinitiated by the local modem when the modems are on-line. Remote Digital Lo...

120 Diagnostics & Troubleshooting Dialing Indicator The V34 LED will flash on and off for 1/2 second intervals toindicate that the modem is dialing. This flash will continue afterdialing until a carrier is detected. Therefore, the V34 LED will alsoflash during leased-line modem connections when ...

Diagnostics & Troubleshooting 121 Received Signal Power Level (RX) This reading is expressed in 1 dBm resolution. The modemmeasured receiving signal power is generally within 1-2 dBm of theactual value with relative accuracy. The receiver sensitivityspecification for your modem is -43 dBm. Stron...

Diagnostics & Troubleshooting 123 Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Errors 0 Round Trip Delay 10 Xmitter Underrun 0 Receiver Overrun 0 Last Speed/Protocol Connect 14400/ARQ/V42b Disconnect Reason Local Hangup This Link Status Report is very...

Diagnostics & Troubleshooting 125 T401 Timeouts and T402 Timeouts These are for the manufacturer checking link layer operation. T401and T402 are timers used in MNP4 or V.42. T402 will count whenthe modem is connected in the idle state with no data to transmit orreceive. FCS Errors Frame CheckSum...

126 Diagnostics & Troubleshooting • Resent Expiration • Protocol Error • Break Timeout • DTR Dropped • Carrier Lost 1 (No handshaking response) • Carrier Lost 2 (Remote hang-up, busy tone heard) Trouble Shooting Your modem is designed to provide years of ultra high speedsatisfaction. In the unli...

Diagnostics & Troubleshooting 127 Problem Your modem fails to execute AT commands. Solutions 1. Make sure the DTR LED is ON. If it is OFF, make sure yourcommunications software is using the same COM port as yourmodem. 2. You may have omitted the characters AT from the beginning ofthe command lin...

128 Diagnostics & Troubleshooting Problem You receive the ERROR result code after typing an AT command. Solution You may have typed a command that is not recognized by yourmodem or communications software. Command Echo Problems Problem You do not see any typed characters on your computer screen....

Diagnostics & Troubleshooting 129 2. Your modem may not be set up for auto-answer. With themodem in command state, type ATS0=1 and press Enter tohave the modem answer on the first incoming ring. To auto-answer after a specific number of rings, replace 1 with a valueup to 255. Do not assign a val...

130 Diagnostics & Troubleshooting Data Transfer Problems Problem You can make a data connection with a remote modem, butencounter frequent errors during data transfers. Solutions 1. Your modem and communications software may be configuredfor different flow control methods. Be sure your modem and...

Upgrading Your Modem 131 11 Upgrading Your Modem Upgrading by Flash EPROM 1. Obtain the new firmware by downloading from the ZyXELBBS, WWW or FTP site. See Contacting ZyXEL on page vifor instructions. 2. Turn on your computer. 3. Turn on your modem. 4. Start any communications program that supports ...

132 Upgrading Your Modem 10. When the installation is complete, the modem restartsautomatically. Kernel Recovery Mode Your modem is equipped with ZyXEL’s exclusive KernelRecovery Mode. This unique feature enables quick recovery fromfailed flash uploads. With other modems, a failed flash uploadusuall...

Terminal Pinouts 133 12 Terminal Pinouts Terminal Blocks Each terminal block has eight terminal pins for connecting phonelines to the corresponding modem in the rack. A description andfunction of each of the eight pins is given below: Pin Assignment Purpose 1 TIP Connect to your telephone 2 RING Con...

134 Terminal Pinouts PC Serial Port Pinouts Signal Pin ITU-TSSSignalName EIASignalName Pin/SignalDescription DirectionDTE-DCE 1 101 AA Protective Ground(GND). 2 103 BA TransmittedData(TXD). → 3 104 BB ReceivedData(RXD). ← 4 105 CA Request To Send(RTS). → 5 106 CB Clear To Send(CTS). ← 6 107 CC Data ...

Terminal Pinouts 135 Signal Pin ITU-TSSSignalName EIASignalName Pin/SignalDescription DirectionDTE-DCE Loop Test. 22 125 CE RingIndicator(RI). ← 24 113 DA Transmit ClockSignal (source:DTE). → 25 142 Test Indicator. ← Macintosh Serial Port Pinouts The following table shows the wiring of a modem Macin...

Index 137 13 Index 16450 UART, 2516550 UART, 5, 25, 262-wire leased line, 2, 4, 35, 954-wire leased line, 2, 4, 35, 85, 86, 95Amiga, 1Analog loopback, 3Asynchronous mode, 2AT commands, 3, 15, 16, 17, 19, 21, 23, 32, 40, 53, 70, 74, 119, 127,128, 134 Audio Monitor, 4Batch mode, 43Call-back security, ...