Zyxel U-336S - Manual

v company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly. The customer should be aware that the compliance with the ...

vi This product has been approved for connection to the Public Switched Telecommunication Network using interfaces compatible with ITU-TSS recommendation I.420 (Basic Rate ISDN user access). This product complies with the following directives: 1. The Council Directive 89/336/EEC of 3 May 1992 on the...

vii • Sales inquiries : [email protected] in North America [email protected] outside North America. • Technical support : [email protected] in North America. [email protected] outside North America. • Product information : Visit our site on the World Wide Web: http://www.zyxel.com. • FTP : Informa...

i x Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 Required Equipment 1 Modem Features 2 Standard Features 2 Intelligent Features 3 Fax Compatibility 4 Technical Specifications 4 2 Installation 7 Front Panel 7 Fro...

x Auto-Answer and Hook Controls 16 Quick Tips when issuing AT Commands 17 Modem Result Codes 19 Viewing S Register Values 19 Changing S Register Values 20 Non-Volatile Memory 20 Storing Phone Numbers 21 Dialing Stored Phone Numbers 21 Saving Settings and User Profiles 21 Helpful Hints for PC Compute...

xi Dialing a Number 33 Manual Dial 34 Repeat Last Dial 35 Auto Answer 35 Dialing Messages 36 Panel Lock 41 V.25bis Command Set 42 Clock Options 43 RTS Options 44 Command State Options 44 Dialing from Synchronous Mode 44 Answering from Synchr onous Mode 45 Auto-Answer 45 Manual Answer 45 5 Leased Lin...

xii Extended Distinctive Ring (EDR) 59 Setting Up EDR 60 EDR Application Example 61 7 Fax Operation 64 Fax Basics 64 Modem as Fax Machine 65 ITU-T T.30 Fax Protocol 65 Fax Command sets 66 Defining the Fax Command Sets 66 Class 1 Command Set 67 Class 2 Command Set 68 Class 2.0 Command Set 74 Extended...

xiii Connect Strings for Error Corrected Connections 127 10 Diagnostics & Troubleshooting 128 Diagnostics 128 Power-On Self Test 128 Resetting The Modem 129 Loopback Tests 130 Indicator Lights 132 Line Condition Status Display 132 Trouble Shooting 135 AT Command Set Problems 135 Command Echo Pro...

Introduction 1 1 Introduction Congratulations on the purchase of your U-336S/SA modem - one of ZyXEL's premier high-performance products. The U-336S and the U-336SA modem are world renown for their ability to maintain ultra high speeds and clear, quality connections while communicating around the gl...

2 Introduction • One AC power adapter (external model) for U336S modem only. • Available AC wall outlet. • Telephone line from your telephone company (dial-up or leased line). • Data and fax communication software. Modem Features No other 33.6 Kbps modem gives you so much for so little. Your modem i...

Introduction 3 • Extended AT command set with V.25bis. • Operates on 2-wire dial-up or 2-wire leased line. Intelligent Features • Automatic data and voice call detection allows you to use a single telephone line to handle both types of calls. • Asynchronous and synchronous modes for reliable serial ...

4 Introduction • ZyXEL exclusive Kernel Recovery Mode for no hassle recovery from failed flash uploads - no factory repairs. Fax Compatibility • EIA Class 1, 2, and 2.0 Fax commands. • ITU-T V.17 G3: up to 14,400bps. • ITU-T V.29 G3: up to 9,600bps. • ITU-T V.27ter G3: up to 4,800bps. • ZyXEL Fax AT...

Installation 7 2 Installation This chapter describes the panel function and installation procedure for the U-336S/SA. A shielded RS-232 cable is required to ensure compliance with FCC Part 15, and it is the responsibility of the user to provide and use a shielded RS-232 cable. Make sure your install...

8 Installation Figure 2-2 U-336SA Front Panel Front Panel LEDs PWR Power ON indicator, loghts up when your modem is turned ON. OH Off-Hook indicator, lights up when your modem is in data mode or off-hook. It goes out when your modem is in talk mode or on-hook. AA Auto-Answer indicator, lights up whe...

Installation 9 CTS DTE mode: Clear To Send indicator; lights up when modem can accept data for transmission. It indicates the signal status of RS232 signal CTS. Front Panel Switches The four arrow keys are for panel operations, allow intuitive menu tree operation and display modem status. Refer to P...

10 Installation Power switch, turns the modem ON or OFF. • POWER JACK Input terminal for power. Use the supplied AC adapter for U-336S model. For U-336SA model you can use your power cord to directly connect to the AC power outlet. • LINE Dial-up line RJ-11 terminal jack, for connection to a 2-wire ...

Installation 11 Figure 2-5 U-336S Modem Connections For the U-336SA you don’t need an AC adapter. Use the supplied power cord to connect your modem to the AC power outlet. Figure 2-6 U-336SA Modem Connections If a leased line is not used, simply leave the connection open. There are no DIP switches o...

12 Installation conveniently stored in user selectable non-volatile memories and can be recalled as often as needed. Powering Up Once your modem’s power switch is turned ON, a series of diagnostic tests will be performed while a message is shown on the LCD panel. For a more detailed description of t...

Basic Modem Operation 13 3 Basic Modem Operation This chapter covers the basic commands and techniques involved in modem operation. In many cases, this is the only information you will need in order to get up and running with communication software, and to start making connections with your modem. U...

14 Basic Modem Operation Using the Windows 95 Hyper Terminal Program In order to issue an AT command statement, you first need to run a communication program such as the Microsoft Windows “Hyper Terminal” program. This program provides a simple method to manually enter AT commands so you can do such...

Basic Modem Operation 15 You are now ready to start entering AT commands. In the terminal window, type: AT<Enter> Your modem responds OK This confirms that the modem and your computer are communicating correctly. To test the telephone line connection issue the manual answer command. Type: ATA&...

16 Basic Modem Operation Tone and Pulse Dialing: ATD P 555 1212 W T 24 Dialing Through a PBX: ATDT 9 W 555 1212 O N OTE : T HE 'W' IN THE DIAL STRING WILL CAUSE THE MODEM TO WAIT FOR A SECOND DIAL TONE BEFORE IT CONTINUES TO DIAL . Pausing During Dialing: ATDT 9 ,, 555 1212 O N OTE : T HE PAUSE TIME...

Basic Modem Operation 17 Quick Tips when issuing AT Commands • The ENTER or RETURN key must be pressed to execute a command. • Multiple AT commands can be combined into one line. For example, AT&D2 and AT&N0 can be combined into one line AT&D2&N0. • Your modem processes commands from...

18 Basic Modem Operation There are a few basic commands that do not require the “AT” command prefix. These are as follows: Command Description A/ Repeats the last issued AT command once. A> Repeats the last issued AT command once, or re-dials the last dialed number up to 9 times until a key is pr...

Basic Modem Operation 19 Modem Result Codes When you execute or try to execute an AT command, your modem sends a result code to let you know whether the command was executed. An OK result code means the AT command you sent was executed. If you receive an ERROR code, it means the command was invalid....

20 Basic Modem Operation You can use the S r ? command to view the value of S-register ‘ r ’. For example, to view the value of S-register S0, which controls auto-answering, type ATS0? and press Enter. The modem responds with a three-digit character showing the value of this register, followed by OK...

Basic Modem Operation 21 Storing Phone Numbers The AT command to store a phone number is in the format AT&Z s = n . The ‘ s ’ is a number from 0 to 49 that represents the location in memory that the phone number is to be stored, and the ‘ n ’ is the phone number itself. Example: To store the num...

22 Basic Modem Operation AT&V n Views the settings in profile ( n-1 ); n =0 to 5; n =0 views current settings. AT&W n Stores the current settings in user profile ‘n’; n =0 to 3. ATZ n Resets the current settings with the settings in profile ‘ n ’, n =0 to 4. Profiles 0 to 3 : User profiles. ...

Basic Modem Operation 23 on your PC, be sure to enable the disk cache by including SMARTDRV execution in your AUTOEXEC batch file. Default Modem Settings for PC ’ s The U-336S/SA factory settings are configured for operation with PC type computers and communication software. In most cases, no additi...

24 Basic Modem Operation tasking systems. The serial port has a 32-byte transmission and a 32-byte receival FIFO to increase communication program efficiency. Helpful Hints for Mac Computers Special AT Command Settings for Mac For operation with Mac computers, you may use the factory default setting...

Basic Modem Operation 25 any program which runs on your Macintosh. At the same time it allows automatic fax receiving. This program includes powerful line manager software which makes sure fax software does not interfere with other programs using the serial ports. If the modem is turned off when you...

26 Basic Modem Operation Unix Software Tips In order to use your ZyXEL modem from a terminal or an X-Windows application, you need a program such as Minicom or Seyon. If you wish to make use of your ZyXEL modem's special features, special gettys such as mgetty or vgetty are needed. These programs ar...

28 LCD Panel Operation 4 LCD Panel Operation This chapter explains how to place and receive calls using the U-336S/SA front panel. An introduction to the panel operation of your modem is presented. Your modem comes with a menu driven 20 x 2 LCD display. All functions of the modem are displayed and s...

LCD Panel Operation 29 computer/terminal or any key pad operation from the front panel. On the LCD screen, there are four on-screen buttons: D Dialing operation with submenus. R Redial last number. O Originate mode on-line. A Answer mode on-line. The cursor is blinking above one of these on-screen b...

30 LCD Panel Operation menu selection and is used to access the previous menu. The up arrow key also serves as a quit command when you want to stop the current action. Down arrow key also called the ENTER key, is used solely to register the chosen selection and is very similar to the Carriage Return...

LCD Panel Operation 31 Double Arrows on The Screen In some menu screens, you will see double left arrows (<<) or double right arrows (>>). This means there are more items on the left or right. Use the left or right arrow key to select them. If you can only see a double right arrow, this ...

32 LCD Panel Operation Dial Memory The first menu in the dialing directory is DIAL MEMORY. Pressing the ENTER key will display the following screen: z #00:12345 <ENTER> Dial out the number << >> SELECT MEMORY Equivalent AT Commands: AT&Z? View all stored phone numbers. ATDSn n ...

LCD Panel Operation 33 Equivalent AT Commands: AT&Z? View all stored phone numbers. AT&Zn=1234567 Store phone number in memory location n (n=0- 49). Up to 50 different numbers can be viewed and set. If you want to add a number to the memory, select an unused memory location and press ENTER. ...

34 LCD Panel Operation Equivalent AT Commands: ATD1234567 Dial phone number. Manual Dial Use of a telephone set to make a call, in which case an answer tone comes back, is normally called Manual Dial. Once the other side answers, access O (Originate) by using the left or right arrow key so the blink...

LCD Panel Operation 35 operation will reinitiate the modem handshaking and enable data communication. Equivalent AT Commands: +++ Escape sequence code; causes a modem to return to command state. Enter the escape sequence while in data state and wait for the modem to respond. ATH Go on-hook; disconne...

36 LCD Panel Operation Dialing Messages Dialing will cause the following screen to be displayed on the LCD: DIALING ...................... 1234567 The dialed phone number will be displayed on the second line of the LCD screen. If the number exceeds 20 digits, only the first 20 digits/characters will...

LCD Panel Operation 37 DISCONNECTING.......... 1234567 The modem will then return to the IDLE STATUS screen. If the first handshaking signal has been detected, the LCD screen will display: HANDSHAKING............ 1234567 If a connection has been made, the LCD will display the actual connected status...

38 LCD Panel Operation On-line Status Screen 1 Status Display Unit/Meaning Link Option V34b V.34bis Line Speed 33600 bps/ TX/RX speed in V-34 Error control V42b V.42bis/only display in Non-V.34 mode Line Type DL Dial-up Line Data Format AS Asynchronous Instant Transmission Throughput 55820 bps/Blank...

LCD Panel Operation 39 Status Display Unit Link Layer Status V42b/SREJ Block Size 256 bits Blocks Retransmitted 0 blocks FCS (Frame Check Sum) Errors 0 bits On-line Status Screen 5 Status Display Unit Near End Echo -22.3 dB Far End Echo -57.2 dB Round Trip Delay 0 ms Echo Frequency Offset 0 Hz On-li...

40 LCD Panel Operat ion Status Display Unit Transmitted Shaping MIN (MAX) Received Shaping MIN (MAX) Transmitted filter index 0~10 Received filter index 0~10 On-line Status Screen 9 Status Display Unit Transmitted Carrirr 1959 Hz Received Shaping 1959 Hz Transmitted Baud rate 3429 Baud Received Baud...

LCD Panel Operation 41 Equivalent AT Commands: +++ Escape sequence code; causes a modem to return to command state. Enter the escape sequence while in data state and wait for the modem to respond. ATH Go on-hook(hang up); disconnect the modem. Pressing the up arrow key (MENU) or selecting NO will sw...

42 LCD Panel Operation of the non-FSK modes the modem is supplied with. Before synchronous transfers are started, some initial settings should be made. V.25bis Command Set To enable V.25bis commands use the AT*I1 command. For synchronous applications, the modem is permanently set in normal situation...

LCD Panel Operation 43 Syntax Command with Parameters* Description AB Abort Call. NT Answer Tone is not detected. INC INC Incoming call. VAL VAL Valid. INV INV Invalid. LSN LSN n; <number> List of stored numbers. (Response to RLN) RST RST Changes to the asynchronous AT command mode. Clock Opti...

44 LCD Panel Operation cannot use adaptive rate. SLAVE AT&X2 Recovered receiver clock serves as transmission clock. RTS Options There are two RTS options. The choice depends on application and host/terminal requirements. In asynchronous mode RTS is used as a hardware flow control signal. IGNORED...

LCD Panel Operation 45 Once the modem is connected, the modem will enter synchronous operation. 2. Dial through the computer using V.25bis commands : Some communication software packages on synchronous computers can dial using V.25bis synchronous commands. In this case, set &M3 and *I1 and the m...

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

Leased Line Operation 47 modem can be commanded to either answer the call immediately, or after a specified number of rings. In a leased-line connection, the communication circuit between two modems is always present. Dialing and waiting for rings does not occur in this situation. If these two modem...

48 Leased Line Operation Terminating a Leased Line Connection A leased line can be terminated two ways: • Going on-line manually. • Turning the power OFF and ON. If you have set the leased line as the power-on default, the modem will try the leased line again.

50 Special Functions 6 Special Functions This chapter describes special features of the U-336S/SA, and offers instructions on how each is used. Security Functions Your modem provides a security function that prevents unauthorized users from making connections. Two types of security functions are pro...

Special Functions 51 • With level 2 security, dial back the phone number corresponding to the dial-in password. The line simply disconnects if the password does not match. User Passwords Fifty user passwords may be defined. The corresponding 50 dial-back numbers are the modem’s 50 stored phone numbe...

52 Special Functions ******** OK The command AT*Hn will modify the nth user password. You will be prompted to enter the supervisor password first and then be prompted to enter the nth user password. Levels of security: Command Function *G0 Disable security function. *G1 Enable type 1 and level 1 sec...

Special Functions 53 Remote Configuration Remote configuration on the U-336S/SA is provided as a profile by profile batch mode. When on-line, the remote modem’s current configuration or one of its profiles can be read into one of the local modem’s user profiles. This profile is modified locally and ...

Special Functions 55 There are two kinds of caller information message formats sent by the phone company. • One is the single message format which includes date, time, and caller ID • The other is the multiple message format which also includes the caller name as registered with the phone company. T...

56 Special Functions CALLER NUMBER: 7135551414 or CALLER NAME: Brent Harper RING In the multiple message format, if the caller’s number and name are available, the ring message will display both: RING TIME: MM-DD hh:mm CALLER NUMBER: <Caller_ID> CALLER NAME: <Caller_Name> RING Here is an...

Special Functions 57 Setting S48.0=1 will cause the modem to report CND information in its ASCII coded hexadecimal raw data format. The DTE software is responsible for explaining the data. O N OTE : P LEASE REFER TO THE B ELLCORE T ECHNICAL A DVISORY DOCUMENT TR- NWT-000030 FOR THE EXACT DATA FORMAT...

58 Special Functions part (cadence) of the ring. Your modem can distinguish up to four types of ring signals and can be commanded to answer or not answer any one of these four types of ring signals. Following is a list of these four types of ring signals. These are the ring types used in the USA. Th...

60 Special Functions report RING to the software immediately. The software application can then issue commands to answer the call and receive the fax. If the remote caller is using a fax phone which does not send out a CNG tone and is waiting for a fax answer tone in order to press the START button,...

Special Functions 61 Bits Bin. Dec. Description 11 3 Report RING six times. EDR detection (either CNG or DTMF tones) will be disabled once detection occurs. However, a customer’s program might not answer because the setting of the software may require multiple rings to answer. S51 bits 0-1 control t...

64 Fax Operation 7 Fax Operation The U-336S/SA can be used as a fax machine. In the sections below, we will describe how the modem works as a fax machine, the ITU-T T.30 fax protocol, the Class 1,2, and 2.0 fax commands and ZyXEL extended fax AT commands. Also covered are the status report result co...

Fax Operation 65 machine or such business, or entity, or individual. In order to program this information into the fax function of your modem, please refer to the documentation of the fax software you will be using. Modem as Fax Machine Modems can also be designed to include a fax transmitting and r...

66 Fax Operation You modem allows for fax speeds up to 14400 bps when transmitting to a fax machine which complies with the V.17 fax standard. Speeds will fall back to 12000, 9600, or 7200 bps in poor line conditions. When connecting to a G3 fax device, your modem allows for fax speeds up to 9600 bp...

Fax Operation 67 Several revisions of the class 2 standard exist. Implementations conforming to different revisions may not work together. A formally approved version is the Class 2.0 command set, also called the TIA-592 standard. Class 1 Command Set Command Value Description +FCLASS=n Service class...

68 Fax Operation Value Modulation Speed Requirements 3 V.21 ch. 2 300 required for FTH & FRH +FTH and +FRH support value 3 (V.21 ch. 2 / 300 bps) only. 24 V.27ter 2400 required for FTM & FRM 48 V.27ter 4800 required for FTM & FRM 72 V.29 7200 required for FTM & FRM 73 V.17 7200 requi...

Fax Operation 69 Command Value Description +FBADLIN= <value> 0-255 Bad line threshold (number of consecutive bad lines for a bad page parameter): Determine if Copy Quality OK on the T.30 flow chart . <value>=0 to 255; a value of 0 implies that error checking is disabled. +FBOR= n Phase C...

70 Fax Operation Command Value Description vr=1 Vertical resolution: Fine; 196 lpi. br=0 Bit rate: 2400 bit/s; V.27ter. br=1 Bit rate: 4800 bit/s; V.27ter. br=2 Bit rate: 7200 bit/s; V.29 or V.17. br=3 Bit rate: 9600 bit/s; V.29 or V.17. br=4 Bit rate: 12000 bit/s; V.17. br=5 Bit rate: 14400 bit/s; ...

Fax Operation 71 Command Value Description +FDCS= vr,br,wd ,ln,df,ec,bf,st Current session parameter; refer to +FDCC command. +FDIS= vr,br,wd,l n,df,ec,bf,st Current session negotiation parameter; refer to +FDCC command. +FDR Receive phase C data command; initiates document reception. +FDT= df,vr,wd...

72 Fax Operation Command Value Description +FMFR? Request DCE manufacturer . +FMINSP= n Minimum phase C speed parameter: n=0 2400 bps. n=1 4800 bps. n=2 7200 bps. n=3 9600 bps. n=4 12000 bps. n=5 14400 bps. +FPHCTO= <value> 0-255 DTE Phase C response time-out: Determine how long the DCE will w...

Fax Operation 73 Command Value Description n=1 Enable polling. All other +F commands are not supported, but the modem will respond OK. In many cases this means "don't care." See PN 2388 for command details. Class 2 Command Responses Response Value Function and Description +FCFR Confirmation ...

74 Fax Operation Response Value Function and Description +FNSF:"HEX string" Report the non-standard facilities frame response. +FNSS:"HEX string" Report the non-standard setup frame response. +FPOLL Remote polling indication. +FPTS:n Receive page transfer status response; refer to +F...

Fax Operation 75 Command Value Description mode for phase C data. +FBS? Buffer size parameter; read only. +FCC= vr,br,wd ,ln,df,ec,bf,st DCE capability parameter. Refer to +FDCC command in Class 2 for parameter settings. +FCLASS= n Service class selection. Refer to +FCLASS Class 1 command in previou...

76 Fax Operation Command Value Description document reception +FDT Transmit phase C data command: releases the DCE to proceed with negotiation +FEA= n Phase C received EOL alignment parameter n=0 Determine that T.4 EOL patterns are bit aligned (as received). n=1 Determine that the last received bits...

Fax Operation 77 Command Value Description +FMI? Request DCE manufacturer identification. +FMM? Request DCE model identification. +FMR? Request DCE revision identification. +FMS= n Minimum phase C speed parameter. refer to +FMINSP Class 2 command in previos section for parameter settings. +FNR= rpr,...

78 Fax Operation Command Value Description +FNS= "string" Non-standard byte string parameter. "string": string of hexadecimal coded octets. +FPI= "string" Local fax station ID string, for polling Rx. +FPR= n Serial port rate control parameter: n=0 Automatic DTE rate detection...

Fax Operation 79 Command Value Description n=0 Disable polling. n=1 Enable polling. Class 2.0 Command Responses Response Value Function and Description +FCI:"CSI ID string" Report remote ID response, Called Station ID +FCO Fax connection established response. +FCS: vr,br,wd,ln ,df,ec,bf,st n...

80 Fax Operation Response Value Function and Description hsc= 70-8F Receive phase B hang up codes. Refer to TIA-592 for details. hsc= 90-9F Receive phase C hang up codes. Refer to TIA-592 for details. hsc= A0-BF Receive phase D hang up codes. Refer to TIA-592 for details. +FIS: vr,br,wd,ln, df,ec,bf...

Fax Operation 81 Response Value Function and Description buffer overflow and report them: lc: line count blc: bad line count cblc: maximum consecutive bad line count lbc: lost byte count +FTC: vr,br,wd,ln ,df,ec,bf,st Remote fax station capabilities (DCT frame information) response refer to +FIS=......

82 Fax Operation Mode Setting Command Function #F Set the modem into V17G3 FAX mode same function as the extended AT command AT&N32. #B0 Set fax receiving mode. The connection parameters and received fax data are sent to DTE continuously following the connect message. (Default) #B1 Set fax recei...

Fax Operation 83 Command Function #T1 Set to two dimensional coding scheme. #R0 Set recording width: 1728 picture elements along a scan line length of 215 mm. #R1 Set recording width: 2048 picture elements along a scan line length of 255 mm. #R2 Set recording width: 2432 picture elements along a sca...

84 Fax Operation Status Report Resul t Codes When the U-336S/SA is in fax mode, each ATD or ATA command will make the modem try to establish a fax connection. Your modem will send a status report result code back to the DTE (computer). NO DIAL TONE Tried to dial but no dial tone is detected. NO CARR...

Fax Operation 85 After each fax disconnection, the following result code is sent back to the DTE: DISCONNECTnP<string> This result code informs DTE of the disconnecting status. Field Description DISCONNECT0 Disconnect with remote confirmation. DISCONNECT1 Disconnect without remote confirmation...

86 Fax Operation automatically, handshakes the multi-page procedure with the remote facsimile and sends the next page. The following flow control signaling is used while receiving a fax: • CTS is not used when receiving fax. • RTS is used to inform your modem that the computer cannot accept data at ...

Fax Operation 87 • Add these commands to the init string: X7#B1+FCLASS=6 • Change the connection message to: 300 CONNECT 4800 CONNECT 4800 1200 CONNECT 1200 9600 CONNECT 7200 1275 CONNECT FAX 19200 CONNECT 9600 2400 CONNECT 2400 38400 CONNECT 14400 • Set external mail as: String Error Level 1 ZyXEL ...

88 AT Command Set Summaries 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 or repeat the last call up to 9 times. (See also S8) <any key> Terminate current connection at...

AT Command Set Summaries 89 Command Options Function & Description Ref. 0-9, #, * Digits for dialing P Pulse dialing S23.1 T Ton dialing S23.1 , Pause for a time specified in S8. Remaining digits will be dialed as in-band DTMF. ; Return to command state after dialing ! Hook flash @ Wait for a 5 ...

90 AT Command Set Summaries Command Options Function & Description Ref. I1 Display product information and ROM checksum I2 Display modem link status report I12 Display physical layer status L n n=0-7 4 * Speaker volume control. The higher the value, the higher the volume S24.5-7 M n Speaker cont...

AT Command Set Summaries 91 Command Options Function & Description Ref. T Ton dial S23.1 UPX Download firmware to the Flash EPROM by using Xmodem protocol V n Sets display type for Result Codes S23.6 V0 Display result code in numeric form. (See also S35.7 and the result code table of 'ATXn') V1 ...

92 AT Command Set Summaries Blocks Resent 0 Max Outstanding 0 Max Block Size 0 Retrains Requested 0 Link Duration 0 Retrains Granted 0 FRN Requested 0 FRN Granted 0 FCS Errors 0 Round Trip Delay 0 Xmitter Underrun 0 Receiver Overrun 0 Last Speed/Protocol 33600 Disconnect Reason Local hang up Data Ty...

AT Command Set Summaries 93 Output Parameter Output Value Description Blocks Resent Number of blocks resent due to remote modem request. (If there were many blocks resent, you may have experienced line trouble or protocol incompatibility.) Max Outstanding Maximum blocks received without acknowledgme...

94 AT Command Set Summaries Output Parameter Output Value Description Break Time-out DTR Dropped Carrier Lost 1 (No handshaking response) Security check ATH command D/V hang up Carrier Lost 2 (Remote hang-up, busy tone) Keyboard Abort Inactivity Extended AT& Command Set Command Options Function ...

AT Command Set Summaries 95 Command Options Function & Description Ref. &D3 Same as &D2 but DTR OFF causes the modem to hang up and reset from profile 0. &F Load factory settings to RAM as active configuration. &Gn Guard tone options S28.4-5 &G0 * No guard tone (within USA, C...

96 AT Command Set Summaries Command Options Function & Description Ref. selection &M0 * Asynchronous mode with data buffering &M1 Asynchronous command, synchronous data &M2 Direct asynchronous mode, no data buffering &M3 Synchronous mode &Nn Modem link mode options (DCE/DCE)....

AT Command Set Summaries 97 Command Options Function & Description Ref. leased lines only) &N9 V.27bis 4800 (models with 4-wire leased lines only) &N10 V.27bis 2400 (models with 4-wire leased lines only) &N11 V.26bis 2400 (models with 4-wire leased lines only) &N12 V.23 1200/75 (...

98 AT Command Set Summaries Command Options Function & Description Ref. &N44 CELL 9600 &N45 CELL 7200 &N46 CELL 4800T &N60 V.34 33600 &N61 V.34 31200 &N62 V.34 28800 &N63 V.34 26400 &N64 V.34 24000 &N65 V.34 21600 &N66 V.34 19200 &N67 V.34 16800 &N...

AT Command Set Summaries 99 Command Options Function & Description Ref. TSS). (See also S41.5, S44.4) &Tn Modem testing. S16 &T0 Terminate test in progress. &T1 Initiate Analog Loop-back (ALB) test. &T3 Initiate Local Digital Loop-back (LDL) test &T4 Grant Remote Digital Loop...

100 AT Command Set Summaries Command Options Function & Description Ref. &X1 Terminal provides synchronous transmit clock signal (External clock from pin 24 of EIA-232D) &X2 Received carrier provides synchronous transmit clock signal (Remote or Slave clock to pin 15 of EIA-232D) &Yn ...

AT Command Set Summaries 101 Command Options Function & Description Ref. directory location n. *D0 * (See also S35.4 and S38.0) *En Modem error control negotiation. S21.0 *E0 * if error control negotiation fails, keep the non-error control connection. *E1 If error control negotiation fails, disc...

102 AT Command Set Summaries Command Options Function & Description Ref. *In Command set selection S17.6-7 *I0 * AT command set *I1 V.25bis command set *I2 Dumb mode *Mn Leased line auto-handshake mode selection S14.0 *M0 Set to Originate mode *M1 Set to Answer mode *Pn n=0-15 *P9 * Set leased l...

AT Command Set Summaries 103 Command Options Function & Description Ref. *V View the Password table *Wab Write local configuration profile “a” to remote user profile “b” and reset remote modem from profile “b” S36.1 a=0-3 Local user profile number “a” S37.4-7 a=4 Local active configuration a=5 L...

Status Registers & Result Codes 105 9 Status Registers & Result Codes S-Register Descriptions In most bit-mapped S-registers, the default bit value is 0. Non-0 default values are followed by an asterisk. In some cases, default values are shown in the reference column preceded by +. Some bits...

106 Status Registers & Result Codes Command Function & Description +Ref. register also sets the time-out interval for the “W” dial modifier to wait for the dial tone. (See also S41b4) S7= Set duration, in number of seconds modem waits for a carrier +060 S8= Set duration, in seconds, for paus...

Status Registers & Result Codes 107 Command bit dec hex Function and description Ref. 1 0 0 Grant Remote Digital Loop-back test request &T4 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 ...

108 Status Registers & Result Codes Command bit dec hex Function and description Ref. power on 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= dec hex Test status register...

Status Registers & Result Codes 109 Command bit dec hex Function and description Ref. accepted) S18= dec hex Force modem to fix baud rate when answering +000 0 * 0 Disable fixed baud function 1-46 1-2E Enable baud rate to be fixed when answering. Baud rate value settings (n) the same as S20 S19=...

110 Status Registers & Result Codes Command bit dec hex Function and description Ref. 17 11 153600 bps 18 12 102400 bps 20 14 61440 bps 21 15 51200 bps 22 16 624000 bps 24 18 124800 bps 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 th...

Status Registers & Result Codes 111 Command bit dec hex Function and description Ref. 16 10 CD tracks presence of data carrier (see also S38.3) &C1 5 0 0 CTS Follows RTS in synchronous mode. Response delay set in S26 &R0 32 20 Ignore RTS (CTS always ON) in synchronous mode. (Default) &am...

112 Status Registers & Result Codes Command bit dec hex Function and description Ref. 24 18 ATX3 X3 32 20 ATX4 X4 40 28 ATX5, error control result code enabled (Default) X5 48 30 ATX6, error control result code enabled X6 56 38 ATX7, error control result code enabled X7 6 0 0 Display result code...

Status Registers & Result Codes 113 Command bit dec hex Function and description Ref. command) S27= bit dec hex Bit mapped register 0-2 Modem error control 0 0 No error control &K0 1 1 MNP4 + MNP3 (see also S41.0) &K1 2 2 MNP4 + MNP5 (see also S38.5, S41.0) &K2 3 3 V.42+MNP4 &K3 ...

114 Status Registers & Result Codes Command bit dec hex Function and description Ref. 1 1 Multiple phone/modem line, RJ12/RJ13 phone jack &J1 1 0 0 Panel key is normal (default) &Y0 1 2 Panel key is locked &Y1 2-3 0 0 Destructive, expedited break &Y2 1 4 Non-destructive, expedite...

Status Registers & Result Codes 115 Command bit dec hex Function and description Ref. 0 1 1 Use CELL 4800T trells coded 4800 for V.32 4800 (available with cellular mode only) 1 2 2 Disable aborting from terminal during modem handshaking 2 4 4 V.26 alternative A. (see also ‘&N11’) 3 8 8 Add 1...

116 Status Registers & Result Codes Command bit dec hex Function and description Ref. 1 1 Grant remote request for configuration *F1 1 0 0 Write from local profile a to remote profile b *Wab 2 2 Read from remote profile b to local profile a *Rab 7-5 Security function control 0 0 Disable security...

Status Registers & Result Codes 117 Command bit dec hex Function and description Ref. number 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 S21.4 4 16 10 Auto-mode fax receiving disabled &N0 5 32 2...

118 Status Registers & Result Codes Command bit dec hex Function and description Ref. 6 64 Enables type 4 ring detection S41= bit dec hex Bit mapped register +000 0 1 1 Special MNP compatibility (see also S27.0, S38.5) &Kn 2 4 4 Disable retrain abort, up to 5 min. for special satellite line ...

Status Registers & Result Codes 119 Command bit dec hex Function and description Ref. 0.5 seconds at carrier loss 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 &N0 2 4 4 Disable cellular mode automa...

120 Status Registers & Result Codes Command bit dec hex Function and description Ref. speed fixed at 9600 if link speed is 7200, DTE speed follows link speed. When selected with &B1, DTE speed fixed at current rate when an ARQ connection is made, when a non-ARQ connection is made, DTE speed ...

Status Registers & Result Codes 121 Command bit dec hex Function and description Ref. times out. 2 4 4 Enable data calling tone (CNG) sending 3 8 8 Reverse the V.23 channel speed. Originate mode modem speed (Send/Receive) 1200/75; Answer mode modem speed (Send/Receive) 75/1200 &N12 4 16 10 (...

122 Status Registers & Result Codes Command bit dec hex Function and description Ref. reaches the preset value. Set value ‘0’ to disable this function. S51= bit dec hex Bit-mapped register 1-0 0 0 Disables EDR 1 1 Reports RING twice 2 2 Reports RING four times 3 3 Reports RING six times 3-2 0 0 ...

Status Registers & Result Codes 123 Command bit dec hex Function and description Ref. 0 0 -43 dBm (Default) 8 8 -33 dBm 16 10 -26 dBm 24 18 -26 dBm 7 0 0 Select ‘Mark’ as the first signal of the V.23 handshaking sequence (Default) &N12 128 80 Select ‘Space’ as the first signal of the V.23 ha...

124 Status Registers & Result Codes Bit S-register bit number, 'b', used in 'ATSr.b=n' and 'ATSr.b=?' dec Decimal value, 'x', used in 'ATSn=x' hex Equivalent Hexadecimal value. +nnn Factory default when listed in 'Reference' column. Note: 'AT' is omitted when an AT command is referred to in the ...

Status Registers & Result Codes 125 ATV0 ATV1 X0 X1 X2 X3 X4 X5 X6 X7 16 CONNECT 12000 % % % % @ $ # 17 CONNECT 14400 % % % % @ $ # 18 CONNECT 16800 % % % % @ $ # 19 CONNECT 38400 % % % % @ 20 CONNECT 57600 % % % % @ 21 CONNECT 76800 % % % % @ 22 CONNECT 115200 % % % % @ 23 CONNECT 230400 % % % ...

126 Status Registers & Result Codes ** When more than one type of Distinctive Ring is turned on (S40b3-6) ‘RING n’ will be reported, n=Ring Type # (1-4) Result Code Chart Symbol Reference: V Supported % Reports the DTE Speed as: <cr><lf>CONNECT DTE_Speed<cr><lf> @ CONNECT...

Status Registers & Result Codes 127 Connect Strings for Error Corrected Connections To enable the following numerical (ATV0) and verbose (ATV1) result codes when an error corrected connection is made, set S35 bit 7 to 1.( ATS35.7=1 ) Numerical V0 Verbose V1 Numerical V0 Verbose V1 50 CONNECT 58 ...

128 Diagnostics & Troubl eshooting 10 Diagnostics & Troubleshooting Diagnostics The U-336S/SA 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. •...

Diagnostics & Troubleshooting 129 code checksum, DSP RAM memory, EEPROM, digital circuits, and the analog circuit calibrations. Results of the power-on self-test displayed on your terminal: 0 SYSTEM TESTING .... Self-test indicator. If no error occurs, this message will last until the end of the...

130 Diagnostics & Troubleshooting temporary power-on reset problem and will not affect modem operation. Loopback Tests The Analog Loopback Test, Local Digital Loopback Test, Remote Digital Loopback Test can all be initiated with AT commands from the terminal. Use the AT&T0 command to termina...

Diagnostics & Troubleshooting 131 Local Digital Loopback Test (AT&T3) This test will loopback the digital form data demodulated from the receiver to the input of the transmitter. During testing, all data received from the remote modem will be returned to the remote modem. This test is applic...

132 Diagnostics & Troubleshooting Indicator Lights Retransmission Indicator In the error control mode, an error occurring in the link will cause the data to be re-transmitted. At the same time, the AA LED will flash. This also indicates the quality of the line. Dialing Indicator The V34 LED will...

Diagnostics & Troubleshooting 133 measuring the distance between the demodulated signal point and the ideal signal point. For V.32/V.32bis, the modem-measured S/N ratio is generally about 2 dB higher than what is actually on the line because the modem rejects some of the out-of-band noise. For V...

Diagnostics & Troubleshooting 135 Trouble Shooting Your modem is designed to provide years of ultra high speed satisfaction. In the unlikely event you encounter problems using your modem, the tips in this section will help you to identify and resolve them. Most modem problems are a result of inc...

136 Diagnostics & Troubleshooting 3. You may have typed the commands when your modem was in data state instead of the command state. To switch from data state to command state, type the escape sequence code +++. To return to the data state, type ATO and press Enter. Problem You typed an AT comma...

Diagnostics & Troubleshooting 137 Solutions 1. Make sure the DTR LED is ON. If it is OFF, make sure your communications software is using the same COM port as your modem. 2. Neither your modem nor your communications software is configured to echo characters. Use the E1 command to enable modem e...

138 Diagnostics & Troubleshooting 3. Check that the DTR LED is ON, and that the AA LED flickers with each incoming ring. If the LEDs do not respond in this way, refer to your ZyXEL Modem Reference Manual. 4. Set &D φ and auto answer, if your modem is not connected to RS232 or DTR is not read...

Diagnostics & Troubleshooting 139 Solutions 1. Your modem and communications software may be configured for different flow control methods. Be sure your modem and software are both using hardware (RTS/CTS) flow control or software (XON/XOFF) flow control. 2. To verify that your modem and communi...

140 Upgrading Your Modem 11 Upgrading Your Modem Upgrading by Flash EPROM 1. Obtain the new firmware by downloading from the ZyXEL BBS, WWW or FTP site. See Contacting ZyXEL on page vi for the FTP address. 2. Turn on your computer. 3. Turn on your modem. 4. Start any communications program that supp...

Upgrading Your Modem 141 Kernel Recovery Mode Your modem is equipped with ZyXEL’s exclusive Kernel Recovery Mode. This unique feature enables quick recovery from failed flash uploads. With other modems, a failed flash upload usually results in the user having to return the modem to the factory for r...

142 Connector Pinouts 12 Connector Pinouts Phone Jack Pinouts The ZyXEL U-336S/SA modem features two RJ-11 phone jacks, one for 2-wire dial-up and 2-wire leased line connection (LINE) and one for an optional connection to a telephone set (PHONE). The signals on these pins are: 1 A 2 RING 3 TIP 4 A1 ...

Connector Pinouts 143 Signal Pin ITU-TSS Signal Name EIA Signal Name Pin/Signal Description Direction DTE-DCE (CTS). 6 107 CC Data Set Ready (DSR). ← 7 102 AB Signal Ground (GND). 8 109 CF Data Carrier Detected (DCD). ← 15 114 DB Transmit Clock Signal (source: DCE). ← 17 115 DD Synchronous Receive C...

144 Connector Pinouts Macintosh Serial Port Pinouts The following table shows the wiring of a modem Macintosh hardware handshaking cable: Mac Din 8 Modem DB 25 Description 1 4 & 20 DTR to RTS and DTR, Hardware Handshaking Out 2 5 CTS to CTS, Hardware Handshaking In 3 2 TX- to TXD, Data sent 4 7 ...

146 Index 13 Index AT commands, 4, 13, 14, 15, 16, 18, 20, 27, 43, 50, 63, 80, 84, 127, 131, 132, 138 Combining, 16 Quick Tips, 16 ATI2 Output, 90 Auto-Answer, 8, 16, 34, 44 Caller ID, 3, 53, 54, 56, 60, 101 Command Characters, 15, 23 Command State Options, 43 Contacting ZyXEL, vi Data State Screens...

2 Index Panel Lock, 40 PC Serial Port Pinouts, 139 Phone Jack Pinouts, 139 Phone Numbers, 20, 21 Dialing stored, 21 Storage, 20 power adapter, 10 Power Level Setting, 45 Powering Up, 12 Rear Panel Markings, 9 Redial operation, 34 Remote Configuration, 52 Required Equipment, 1 Resetting The Modem, 12...