U-336S and U-336SA User’s Manual Version 3.
ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two (2) years from the date of purchase.
desires some other return destination beyond the U.S. borders, the customer shall bear the cost of the return shipment. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Copyright © 1999 by ZyXEL The contents of this book may not be reproduced (in any part or as a whole) or transmitted in any form or by any means without the written permission of the publisher. Published by ZyXEL Communications Corporation. All rights reserved.
limits are designed to provide reasonable protection against harmful interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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 above conditions may not prevent degradation of service in some situations. Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier.
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 approximation of the laws of the member states relation to Electro Magnetic Compatibility. (EMC Directive) 2.
• • Sales inquiries: sales@zyxel.com in North America sales@zyxel.com.tw outside North America. Technical support: support@zyxel.com in North America. support@zyxel.com.tw outside North America. • Product information: Visit our site on the World Wide Web: http://www.zyxel.com. • FTP: Information , such as ZyXEL software and ROM updates for North America can be found at this FTP address: ftp.zyxel.com For European versions and related files, use the address: ftp.zyxel.co.
viii
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 Front Panel LEDs 8 Front Panel Switches 9 Rear Panel Markings 9 Modem Connection 10 Powering Up 12 3 Basic Modem Operation 13 Understanding AT Commands 13 Using the Windows 95 Hyper Terminal Program 14 Dialing and
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 Computers 22 Default Modem Settings for PC’s 23 ZyXEL Serial/Parallel I/O Card 23 Helpful Hints for Mac Computers 24 Special AT Command Settings for Mac 24 Mac Serial Port 24 Mac Software Tips 24 Helpful Hints for UN
Dialing a Number 33 Manual Dial 34 Repeat Last Dial 35 Auto Answer 35 Dialing Messages 36 Panel Lock 41 V.
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.
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 Problems 136 Answer Problems 137 Dialing Problems 138 Data Transfer Problems 138 Connection Problems 139 11 Upgrading Your Modem 140 Upgrading by Flash EPROM 140 Kernel Recovery Mode 141 12 Connector Pinouts 142 Phone Ja
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 U336SA modem are world renown for their ability to maintain ultra high speeds and clear, quality connections while communicating around the globe. This User’s Guide describes the use of both U-336S and U-336SA models and gives instructions for their installation and operation. All the features are common to both the models except for different input terminal.
• 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 is equipped with an array of standard and ZyXEL-famous Intelligent features designed to make your data communications faster, easier, and more convenient. Standard Features • Ultra-high speed modem supports V.
• 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 data communication. • Fast retrain with automatic fall-forward and fall-back.
• 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 commands. Technical Specifications • Operating mode: auto-dial/answer. • Flow control: software XON/XOFF or hardware CTS/RTS.
• Audio Monitor: programmable volume control.
6 Introduction
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 installation site is clean and well ventilated. The ventilation slot of your ZyXEL modem located on the sides and bottom should not be covered and should allow free movement of air.
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 when your modem is in the Auto Answer Mode; flashes when modem rings. In error control mode, it flashes when retransmitting.
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 Panel Operstion section in the Chapter LCD Panel Operation for details of menu key operations.
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 dial-up or 2-wire leased line. • PHONE RJ-11 terminal jack, for connection to a telephone set. • EIA-232D Serial port DB25S connector, for connection to the serial port of a DTE (computer/terminal).
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 or configuration settings that you need to worry about. Your modem comes factory pre-set and allows you to fully configure the modem from the LCD display.
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 these diagnostic tests, please refer to Chapter 10 Diagnostics & Troubleshooting.
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. Understanding AT Commands The U-336S/SA communicates asynchronously with computers using AT commands. AT commands are used to configure and control your modem.
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 things as “customize” the settings of your modem, or store commonly used phone numbers.
You are now ready to start entering AT commands. In the terminal window, type: AT 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 Your modem will pick up the phone line, and try to communicate. Normally, this command is only used to answer an incoming call made from another modem, thus the high pitched tone you will hear from the speaker.
ONOTE: Tone and Pulse Dialing: ATDP 555 1212 WT 24 Dialing Through a PBX: ATDT 9 W 555 1212 THE 'W' IN THE DIAL STRING WILL CAUSE THE MODEM TO WAIT FOR A SECOND DIAL TONE BEFORE IT CONTINUES TO DIAL. Pausing During Dialing: ONOTE: ATDT 9,,555 1212 THE PAUSE TIME FOR EACH COMMA IS DEFINED BY S REGISTER S8. DEFAULT IS 2 SECONDS PER COMMA.
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 left to right. The AT command that appears to the right might over-write the command to the left if they are trying to accomplish tasks or set modes that cannot coexist.
There are a few basic commands that do not require the “AT” command prefix. These are as follows: Command A/ A> +++ Description Repeats the last issued AT command once. Repeats the last issued AT command once, or redials the last dialed number up to 9 times until a key is pressed or a connection is made. Terminates the current connection attempt, if pressed while modem is handshaking. Escape code sequence. Entered while the modem is in Data Mode. Returns modem to Command Mode.
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. The U-336S/SA also provides result codes that show: • Whether or not a Dial Tone was detected when the modem originated a call. • If a busy signal was detected when the modem originated a call.
You can use the Sr? command to view the value of S-register ‘r’. For example, to view the value of S-register S0, which controls autoanswering, type ATS0? and press Enter. The modem responds with a three-digit character showing the value of this register, followed by OK. A value of 002, for example, means your modem will auto-answer incoming calls after the second ring. Some S-registers are bit mapped. For these registers, you can use the Sr.b? command to read their values.
Storing Phone Numbers The AT command to store a phone number is in the format AT&Zs=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 number ‘1-714-555-1212’ in memory location ‘2’, type: AT&Z2=17145551212 You can store up to 50 telephone numbers. Dialing Stored Phone Numbers The AT command syntax used to dial a stored number is ATDS=n.
AT&Vn AT&Wn ATZn Views the settings in profile (n-1); n=0 to 5; n=0 views current settings. Stores the current settings in user profile ‘n’; n=0 to 3. Resets the current settings with the settings in profile ‘n’, n=0 to 4. Profiles 0 to 3: User profiles. Profile 4: Factory default profile. Helpful Hints for PC Computers Most PCs are equipped with more than one serial port. Standard cables are readily available from many suppliers.
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 additional settings will be required. The following are some of the default settings that are used for operation with PC computers and software: AT Command E1 &C1 &D2 &K4 &N0 Description Echoes command characters.
tasking systems. The serial port has a 32-byte transmission and a 32byte 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 settings with one exception. You must set the modem to ignore the DTR signal as follows.
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 start your Macintosh with the line manager activated, the computer may seem to freeze for a few minutes. During this time the line manager software tries to locate and to set up the modem.
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 are available from several ftp-sites. Some archives also contain source files. You should suppress the modem's result code to (ATQ1) because some applications may be confused by them.
Basic Modem Operation 27
4 LCD Panel Operation This chapter explains how to place and receive calls using the U336S/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 selectable from this menu. Finally, this chapter will familiarize the user with the menu tree structure which categorizes modem operations for easy and quick reference.
computer/terminal or any key pad operation from the front panel. On the LCD screen, there are four on-screen buttons: D R O A Dialing operation with submenus. Redial last number. Originate mode on-line. Answer mode on-line. The cursor is blinking above one of these on-screen buttons, a dark rectangle which may be moved using the keys next to the display.
Down arrow key 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. also called the ENTER key, is used solely to register the chosen selection and is very similar to the Carriage Return key or Enter key on a standard keyboard. Menu Tree In command state, there are three main menu trees. The IDLE menu is the default, and can be accessed after the modem is powered on or reset.
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 indicates that the current item is the first item of the menu. By pressing the left arrow key, the screen will wrap over to the last item.
Dial Memory The first menu in the dialing directory is DIAL MEMORY. Pressing the ENTER key will display the following screen: z #00:12345 << >> SELECT MEMORY Dial out the number Equivalent AT Commands: AT&Z? ATDSn View all stored phone numbers. n = 0 - 49; dial stored number. The first stored number shown on the menu is the default dial number which can be selected from the DEFAULT DIAL menu. By pressing the left or right arrow key, you can view up to 50 different numbers stored in the memory.
Equivalent AT Commands: AT&Z? View all stored phone numbers. AT&Zn=1234567 Store phone number in memory location n (n=049). 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. The blinking cursor will change into an underscore and will move to the next position on the right side of the colon. SELECT MEMORY will change to SELECT DIGIT.
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 blinking cursor settles on the O. Then press the ENTER key to start the modem handshaking sequence. Equivalent AT Commands: ATD Go on-line in Originate mode. When dialing a person, use the telephone to make the call.
operation will reinitiate the modem handshaking and enable data communication. Equivalent AT Commands: +++ ATH ATD ATA 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. Go on-hook; disconnect the modem. Go on-line in Originate mode. Go on-line in Answer mode. Repeat Last Dial Access R (Repeat last dial) by pressing the left or right arrow key and the ENTER key.
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 be displayed. If the modem's DIAL-UP LINE jack is not plugged in or not connected, the LCD screen will display the following: NO DIAL TONE............ 1234567 The modem will then return to the IDLE STATUS screen.
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. These are V.34 data state screens: V.34b 33600 33600 SNR= 41.5 CLC= 0 DL H >> 55820 51324 AS TXL=-11.0 RXL=-21.
On-line Status Screen 1 Status Link Option Line Speed Error control Display V34b 33600 V42b Line Type Data Format Instant Transmission Throughput Instant Receiving Throughput DL AS 55820 51324 Unit/Meaning V.34bis bps/ TX/RX speed in V-34 V.42bis/only display in Non-V.34 mode Dial-up Line Asynchronous bps/Blank in synchronous mode bps/Link Speed in synchronous mode On-line Status Screen 2 Status Signal to Noise Ratio Receiving Signal level Transmition Signal level Carrier lost Counts Display 30.9 -25.
Status Link Layer Status Block Size Blocks Retransmitted FCS (Frame Check Sum) Errors Display V42b/SREJ 256 0 0 Unit Display -22.3 -57.2 0 0 Unit dB dB ms Hz Display -0.0 -0.
Status Transmitted Shaping Received Shaping Transmitted filter index Received filter index Display MIN (MAX) MIN (MAX) 0~10 0~10 Unit Display 1959 1959 3429 3429 Unit Hz Hz Baud Baud Display Channel Spectrum probed at V34 phase two.
Equivalent AT Commands: +++ ATH 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. Go on-hook(hang up); disconnect the modem. Pressing the up arrow key (MENU) or selecting NO will switch the screen back to the ON-LINE STATUS screen 1 and the modem remains on-line. Pressing ENTER will hang up the line and cause the modem to revert to the IDLE STATUS screen to await your next command.
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 situations for use with one application. Save the desired settings in the power-on profile, and the modem will be initialized to synchronous mode (&M3) with V.25bis command enabled (*I1) when powered on.
Syntax Command with Parameters* INC VAL INV LSN RST INC VAL INV LSN n; RST Description AB Abort Call. NT Answer Tone is not detected. Incoming call. Valid. Invalid. List of stored numbers. (Response to RLN) Changes to the asynchronous AT command mode. Clock Options Synchronous data must be transmitted and received with a common timing clock. This timing clock is used to transmit data from the DTE to the modem which modulates the data according to this clock.
SLAVE AT&X2 cannot use adaptive rate. 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 AT&R1 CTS TRACKS RTS AT&R0 RTS is ignored; always assumed to be ON. (Default) Delay before CTS responds to RTS's change. The delay is set in the S26 register.
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 modem will accept V.25bis commands and make a synchronous connection. 3. Using DTR to dial a stored number in synchronous mode : Store the telephone number by the asynchronous command &Zn=.
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 to receive. Two-wire leased lines transmit and receive on the same pair of wires. Your modem supports 2 -wire leased lines only. Connecting to a Leased Line The U-336S/SA default line is a dial-up type.
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 modems want to establish a data link, one must be designated as the originator and the other as the answerer. You can set this manually or automatically. Manual Connect Set the modem to leased-line mode.
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.
Leased Line Operation 49
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 provided. • Type 1 security is used when the remote modem is also a ZyXEL modem. • Type 2 security is used when the remote modem is any other brand.
• 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 numbers. Any character (ASCII 0-127) can be used in the password, the maximum password length is 8 characters. Security functions are only accessible through AT commands in terminal mode.
******** 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 *G0 *G1 *G2 *G3 *G4 *G5 ONOTE: Function Disable security function. Enable type 1 and level 1 security, with password check. Enable type 1 and level 2 security, with password check and callback. Enable type 2 and level 1 security, with password check.
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 the line can be disconnected during this time. Local profile modification is done by loading this profile as the active settings and then modifying and saving the active settings back to the profile.
The remote profile read and write commands - *Rab and *Wab - only work in the on-line condition. The connection speed and mode do not matter. The remote modem must be set to accept remote configuration by executing the AT*F1 command. The AT*F0 command will set the modem up to deny remote configuration requests.
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. The command ATS40.2=n is used to enable (n=1) or disable (n=0) the Caller ID detection function. The default is disabled. Enable it only when you have this service and want to enable its detection.
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 NAME: RING Here is an example: RING TIME: 04-28 12:30 CALLER NUMBER: 7135551414 CALLER NAME: Tracy Huang RING If the caller number and name are not available, the ring message will appear as follows: RING TIME: 04-28 12:30 REASON FOR NO NUMBER: OUT_OF_AREA REASON FO
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. ONOTE: PLEASE REFER TO THE BELLCORE TECHNICAL ADVISORY DOCUMENT TRNWT-000030 FOR THE EXACT DATA FORMAT . THE ABOVE CALLER ID SCHEME APPLIES TO THE NORTH AMERICA AREA. DIFFERENT COUNTRIES MAY EMPLOY DIFFERENT CALLER ID SCHEMES, CHECK IF THE SCHEME USED IN YOUR COUNTRY IS SUPPORTED BEFORE USING THE CALLER ID FEATURE.
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. The difference among the ring types is the two-second ON part of the ring signal. It comprises a long, double short, or triple short ring. S-register S40 bits 3-6 are used for distinctive ring control.
Extended Distinctive Ring (EDR) Extended Distinctive Ring (EDR) is a special feature designed for single telephone line home use to receive fax or data calls without interfering with regular voice calls. When most users install a fax/modem at home, they won’t subscribe to an extra telephone line for occasional fax or data calls; however, fax/data calls do come in from time to time. If a user lets the fax/data software application answer, voice calls will be missed.
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, the caller can press a designated DTMF tone, which will activate the modem to report and subsequently be ordered to answer the fax call.
Bits Bin. 11 Dec. 3 Description 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 the number of rings that the modem will report once the CNG or DTMF tone is detected.
2. Set S51.0=1 to enable EDR and report RING twice. The modem will not report a normal RING and ZFAX will not answer a call unless EDR RING is reported. 3. Set S51.4=1 to enable fax CNG tone detection. It is reported as RING. 4. Set S51.2=1 to enable DTMF tone detection. It is reported as RING. If the remote fax machine does not generate the CNG tone, ask a fax caller through your answering machine message to press “*” (or any other DTMF key) if he or she wants to send a fax.
Special Functions 63
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 codes, the flow control protocol associated with ZyXEL fax AT commands, and some specific fax applications. The instructions for using the included modem/fax/voice utility program are included on the software disk.
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 receiving function similar to a fax card. Since the modem's interface with the computer is the standard serial RS-232 interface, this interface is used for both modem and fax operations.
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 bps and will automatically fall back to 7200, 4800, and 2400 bps if the line quality is poor.
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 TIA592 standard. Class 1 Command Set Command +FCLASS=n ONOTE: Value Description Service class selection n=0 Set to Data mode n=1 Set to Class 1 mode n=2 Set to Class 2 mode n=2.0 Set to Class 2.0 mode n=6 Set to ZFAX mode n=8 Set to Voice mode IF S57.
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 required for FTM & FRM 74 V.17 w/st 7200 required for FTM & FRM 96 V.29 9600 required for FTM & FRM 97 V.17 9600 required for FTM & FRM 98 V.17 w/st 9600 required for FTM & FRM 121 V.17 12000 required for FTM & FRM 122 V.
Command +FBADLIN= Value Description 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 . =0 to 255; a value of 0 implies that error checking is disabled. +FBOR=n Phase C data bit order: n=0 Select direct bit order. n=1 Select reversed bit order in receiving mode for phase C data. +FBUF? Buffer size; read only parameter: Allow DTE to determine the characteristics of the DCE’s buffer size.
Command Value vr=1 br=0 br=1 br=2 br=3 br=4 br=5 wd=0 wd=1 wd=2 ln=0 ln=1 ln=2 df=0 df=1 ec=0 ec=1 bf=0 st=0 st=1 st=2 st=3 st=4 st=5 st=6 st=7 70 Fax Operation Description Vertical resolution: Fine; 196 lpi. Bit rate: 2400 bit/s; V.27ter. Bit rate: 4800 bit/s; V.27ter. Bit rate: 7200 bit/s; V.29 or V.17. Bit rate: 9600 bit/s; V.29 or V.17. Bit rate: 12000 bit/s; V.17. Bit rate: 14400 bit/s; V.17. Page width: 1728 pixels in 215mm. Page width: 2048 pixels in 255mm. Page width: 2432 pixels in 303mm.
Command Value Description +FDCS=vr,br,wd Current session parameter; refer to ,ln,df,ec,bf,st +FDCC command. +FDIS=vr,br,wd,l Current session negotiation parameter; n,df,ec,bf,st refer to +FDCC command. +FDR Receive phase C data command; initiates document reception. +FDT=df,vr,wd, Transmit phase C data command: release ln the DCE to proceed with negotiation. +FET=n End of page or document command: n=0 More pages; same document. n=1 End of document; another document follows. n=2 No more pages or documents.
Command +FMFR? +FMINSP=n +FPHCTO= +FPTS=n +FREL=n +FREV? +FSPL=n 72 Fax Operation Value Description Request DCE manufacturer . 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. 0-255 DTE Phase C response time-out: Determine how long the DCE will wait for a command after reaching the end of data when transmitting in Phase C. =0 to 255; 100 ms units. Page transfer status n=1 Received page good.
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 . +FCIG:"string" Report remote ID response CIG. +FCON Facsimile connection response. +FCSI:"string" Report remote ID response CSI. +FDCS:vr,br,wd,l Report session parameters response; n,df,ec,bf,st refer to +FDCC=.... command.
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 +FPTS=n command. +FTSI:"string" Report remote ID response TSI. +FVOICE Transition to Voice response.
Command Value Description mode for phase C data. +FBS? Buffer size parameter; read only. +FCC=vr,br,wd DCE capability parameter. Refer to ,ln,df,ec,bf,st +FDCC command in Class 2 for parameter settings. +FCLASS=n Service class selection. Refer to +FCLASS Class 1 command in previous section. +FCO DCE response fax connection made. +FCQ=, rq=0 DCE Receive Copy Quality Checking disabled. rq=1 DCE Receive Copy Quality Checking enabled.
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 of T.4 EOL patterns are byte aligned by the DCE, with necessary zero fill bits inserted. +FIE=n Procedure interrupt parameter n=0 Procedure interrupt requests from the remote station are ignored, and not reported to the DTE.
Command +FMI? +FMM? +FMR? +FMS=n +FNR=rpr,tpr, idr, nsr Value Description Request DCE manufacturer identification. Request DCE model identification. Request DCE revision identification. Minimum phase C speed parameter. refer to +FMINSP Class 2 command in previos section for parameter settings. Negotiation message reporting control parameters: rpr=0 Receiver parameters are not reported. +FIS: and +FTC: response reports are suppressed. rpr=1 Receiver parameters are reported.
Command +FNS="string" +FPI="string" +FPR=n +FPS=n +FRQ=pgl,cbl +FSP=n 78 Fax Operation Value Description Non-standard byte string parameter. "string": string of hexadecimal coded octets. Local fax station ID string, for polling Rx. Serial port rate control parameter: n=0 Automatic DTE rate detection by the DCE. n>0 Serial rate is fixed at the value multiplied by 2400 bps. For example, when n=8, the DTE rate is equal to 19200 bps (8x2400).
Command Value Description n=0 Disable polling. n=1 Enable polling. Class 2.0 Command Responses Response Value +FCI:"CSI ID string" +FCO +FCS:vr,br,wd,ln ,df,ec,bf,st +FET: ppm=0 ppm=1 ppm=2 ppm=3 ppm=4 ppm=5 +FHS: hsc= 0-0F hsc= 10-1F hsc= 20-3F hsc= 40-4F hsc= 50-6F Function and Description Report remote ID response, Called Station ID Fax connection established response. negotiated session parameters (DCS frame information) response. Refer to +FIS= comnd.
Response Value hsc= 70-8F hsc= 90-9F hsc= A0-BF Function and Description Receive phase B hang up codes. Refer to TIA-592 for details. Receive phase C hang up codes. Refer to TIA-592 for details. Receive phase D hang up codes. Refer to TIA-592 for details. Remote fax station capabilities (DIS frame information) response refer to +FIS=... command for a description of sub-parameters. Report NSC (non-standard Commands) frame Report NSF (non-standard Facilities) frame. Report NSS (non-standard Setup) frame.
Response +FTC:vr,br,wd,ln ,df,ec,bf,st +FTI: "TSI ID string" +FVO 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 Remote fax station capabilities (DCT frame information) response refer to +FIS=... command for the description of sub-parameters. Remote ID response-Transmit Station ID (TSI). Report transition to voice.
Mode Setting Command #F #B0 #B1 #B2 #B3 Function Set the modem into V17G3 FAX mode same function as the extended AT command AT&N32. Set fax receiving mode. The connection parameters and received fax data are sent to DTE continuously following the connect message. (Default) Set fax receiving mode. The messages are separated from the received fax data. The modem sends CONNECT FAX and ZyXEL first, then it waits for the DC2 character (hex18) to send the fax data.
Command #T1 #R0 #R1 #R2 #L0 #L1 #L2 #C0 #C1 #C2 #C3 #C4 #C5 #C6 #C7 #P Function Set to two dimensional coding scheme. Set recording width: 1728 picture elements along a scan line length of 215 mm. Set recording width: 2048 picture elements along a scan line length of 255 mm. Set recording width: 2432 picture elements along a scan line length of 303 mm. Set maximum recording length: A4 (297 mm ). Set maximum recording length: B4 ( 364 mm ). Set maximum recording length: unlimited.
Status Report Result 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 CARRIER Handshake fails or no carrier is detected or timeout. BUSY Other party's phone line is busy. NO ANSWER Quiet answer is not detected before time-out. CONNECT FAX See below.
After each fax disconnection, the following result code is sent back to the DTE: DISCONNECTnP This result code informs DTE of the disconnecting status. Field DISCONNECT0 DISCONNECT1 P Description Disconnect with remote confirmation. Disconnect without remote confirmation. Remote fax number. The basic AT commands ATV0 and ATQ1 do not affect the above CONNECT and DISCONNECT status report result codes. The modem will always return the same status format as above.
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 this moment. The modem will not pass received data to the DTE if RTS is turned off. When finished receiving the fax message, your modem will turn off CD then send a status report result code to the DTE.
• Add these commands to the init string: X7#B1+FCLASS=6 • Change the connection message to: 300 1200 1275 2400 • CONNECT CONNECT 1200 CONNECT FAX CONNECT 2400 4800 9600 19200 38400 CONNECT 4800 CONNECT 7200 CONNECT 9600 CONNECT 14400 Set external mail as: String 1 ZyXEL 2 3 Error Level 100 The following is a sample setting in the BINKLEY.CFG file for a Binkley system.
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) Terminate current connection attempt when enter in handshaking state. +++ Escape sequence code, entered in data state, wait for modem to return to command state. All the Following Commands Require a “AT” Prefix: Command Options Function & Description Ref.
Command Options 0-9, #, * P T , DL DSn En Hn In Function & Description Ref. Digits for dialing Pulse dialing S23.1 Ton dialing S23.1 Pause for a time specified in S8. Remaining digits will be dialed as inband DTMF. ; Return to command state after dialing ! Hook flash @ Wait for a 5 second silence before proceeding R Reverse handshake (go on-line in S17.5 Answer mode) W Wait for second dial tone.
Command Options Function & Description I1 Display product information and ROM checksum I2 Display modem link status report I12 Display physical layer status Ln n=0-7 Speaker volume control. The higher 4* the value, the higher the volume Mn Speaker control M0 Speaker always OFF M1 * Speaker ON until call is answered M2 Speaker always ON M3 Speaker ON after the last digit is dialed out and OFF when carrier is detected Nn n=0-7 Ring volume control.
Command Options Function & Description T Ton dial UPX Download firmware to the Flash EPROM by using Xmodem protocol Vn Sets display type for Result Codes V0 Display result code in numeric form. (See also S35.7 and the result code table of 'ATXn') V1 * Display result code in verbose form. Xn n=0-7 Result code options, see the Options 5* Table Zn n=0-4 Reset modem and set power-on profile. Zn Reset modem and load user profile n (0-3). Z4 Reset modem and load factory settings.
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 Data Type Chars Octets Block Output Parameter Chars Sent Chars Received Octets Sent Octets Received Blocks Sent Blocks Received 92 AT Command Set Summaries Local hang up Description Data received from or sent to DTE (PC).
Output Parameter Blocks Resent Output Value Description 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 acknowledgment by remote modem. Max Block Size Maximum octets contain in a block Retrains The number of times local modem requested Requested retrain. Link Duration Total link duration time (in minutes).
Output Parameter Output Value Description Break Time-out Carrier Lost 1 (No handshaking response) Security check ATH command D/V hang up DTR Dropped Carrier Lost 2 (Remote hang-up, busy tone) Keyboard Abort Inactivity Extended AT& Command Set Command Options Function & Description &Bn Data rate, terminal-to-modem. (DTE/DCE) &B0 DTE rate follows connection rate. (See also S44.6) &B1 * DTE/DCE rate fixed at DTE setting (See also S18, S20, and S44.
Command Options Function & Description &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 &G0 * No guard tone (within USA, Canada). &G2 1800 Hz guard tone. &Hn Data flow control, DTE/DCE. &H0 Flow control disabled. &H3 * Hardware (CTS/RTS) flow control &H4 Software (XON/XOFF) flow control.
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 S19 (DCE/DCE). (See also S43.7, S48.1) &N0 * Multi-Auto, auto negotiate highest possible link rate: V.34, ZyX 19200, ZyX16800, V.32bis, V.32, V.22bis, V.22 and Bell 212A, G3 Fax V.17/V.29/V.27ter and cellular modes. (See also S38.4, S43.0, S43.1, S43.3 and S48.5) &N1 V.
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 (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.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 G3 Fax V.
Command Options &N44 &N45 &N46 &N60 &N61 &N62 &N63 &N64 &N65 &N66 &N67 &N68 &N69 &N70 &N71 &N72 &N73 &Pn &P0 * &P1 &Rn Function & Description CELL 9600 CELL 7200 CELL 4800T V.34 33600 V.34 31200 V.34 28800 V.34 26400 V.34 24000 V.34 21600 V.34 19200 V.34 16800 V.34 14400 V.34 12000 V.34 9600 V.34 7200 V.34 4800 V.
Command Options Function & Description TSS). (See also S41.5, S44.4) &Tn Modem testing. &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-back request from remote modem &T5 Deny Remote Digital Loop-back request from remote modem &T6 Initiate Remote Digital Loop-back (RDL) test &T7 Initiate Remote Digital Loop-back with self test (RDL+ST) &T8 Initiate Analog Loop-back with self test.
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 Break handling. Destructive Break S28.2-3 clears the buffer. Expedited Break is sent immediately to the remote system. (For internal modem only.) &Y0 Destructive, expedited. &Y1 * Nondestructive, expedited. &Y2 Nondestructive, unexpedited.
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, disconnect the call (hang-up). *Fn Remote configuration enable S36.0 *F0 * Deny remote configuration *F1 Accept remote configuration (Remote Digital Loop-back must be granted, &T4) *Gn Security function selection S36.
Command Options Function & Description *In Command set selection *I0 * AT command set *I1 V.25bis command set *I2 Dumb mode *Mn Leased line auto-handshake mode selection *M0 Set to Originate mode *M1 Set to Answer mode *Pn n=0-15 Set leased line transmission power *P9 * level; ranges from 0 dBm to -15 dBm (default: -9 dBm) (see also S35.3) *Qn Action taken when line quality changes. *Q0 No action to poor signal quality. *Q1 Retrain action taken if signal quality is poor. (See also S41.
Command Options Function & Description *V View the Password table *Wab Write local configuration profile “a” to remote user profile “b” and reset remote modem from profile “b” a=0-3 Local user profile number “a” a=4 Local active configuration a=5 Local factory default configuration b=0-3 Remote user profile number “b” Ref. S36.1 S37.4-7 S37.
104 AT Command Set Summaries
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 are reserved for factory use and should not be changed. Basic S-Registers "ATSn=x" Command Function & Description S0= Set the number of rings on which the modem will answer.
Command Function & Description +Ref. register also sets the time-out interval for the “W” dial modifier to wait for the dial tone.
Command bit dec hex Function and description Ref.
Command bit dec hex Function and description power on 64 40 Profile 2 as active settings after power on 96 60 Profile 3 as active settings after power on 128 80 * Factory default as active settings after power on S16= dec hex Test status register 0 0 No test in progress 1 1 Loop-back test in progress 3 3 Local Digital Loop-back test in process 6 6 Remote Digital Loop-back test in process 7 7 Remote Digital Loop-back with self-test in process 8 8 Analog Loop-back with self test in progress S17= bit dec hex B
Command bit dec hex Function and description Ref. accepted) S18= dec hex Force modem to fix baud rate +000 when answering 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= dec hex Modem connection mode, same +000/ &Nn 0-73 0-49 setting value as 'AT&Nn' command S20= dec hex DTE speed (bps).
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 the speeds up to S20=15 are supported by auto speed detection.
Command bit dec hex Function and description 16 10 CD tracks presence of data carrier (see also S38.3) 5 0 0 CTS Follows RTS in synchronous mode. Response delay set in S26 32 20 Ignore RTS (CTS always ON) in synchronous mode. (Default) 6-7 0 0 Assume DTR always On 64 40 108.1, DTR OFF-ON transition causes dial of the default number 128 80 108.2 Data Terminal Ready, DTR OFF causes the modem to hang up and return to command state 192 C0 108.
Command bit dec 24 32 40 48 56 6 0 64 7 S24= S25= S26= 0 128 bit dec 2-0 0-7 6-4 16112 0255 dec 0255 hex 18 20 28 Function and description Ref. ATX3 X3 ATX4 X4 ATX5, error control result code X5 enabled (Default) 30 ATX6, error control result code X6 enabled 38 ATX7, error control result code X7 enabled 0 Display result code in numeric V0 format (see S35.7) 40 Display result code in verbose V1 format 0 Modem returns result code Q0 80 Modem does not return result Q1 code (see also S40.
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 &K1 S41.0) 2 2 MNP4 + MNP5 (see also &K2 S38.5, S41.0) 3 3 V.42+MNP4 &K3 4 4 V.42 + V.
Command bit dec hex Function and description 1 1 Multiple phone/modem line, RJ12/RJ13 phone jack 1 0 0 Panel key is normal (default) 1 2 Panel key is locked 2-3 0 0 Destructive, expedited break 1 4 Non-destructive, expedited break (default) 10 8 Non-destructive, un-expedited break 4-5 0 0 No guard tone 16 10 Reserved 32 20 1800 Hz guard tone 6 0 0 DTE/DCE rate follows link rate (See also S18, S44b6) 1 64 DTE/DCE rate is fixed at the DTE setting, range from 300460.
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 12 dBm attenuation to the leased line transmission power 4 16 10 When Data/Voice with is *Dn pressed, modem will dial the S29 default number. 5 32 20 Enable Selective Reject in V.42 (Default) 6 64 40 Enable password protection to *W0 profile saving.
Command bit dec hex Function and description 1 1 Grant remote request for configuration 1 0 0 Write from local profile a to remote profile b 2 2 Read from remote profile b to local profile a 7-5 Security function control 0 0 Disable security function (Default) 32 20 Enable type 1 security with password check.
Command bit dec hex Function and description number 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 4 16 10 Auto-mode fax receiving disabled 5 32 20 Disable MNP5 S39= bit dec hex Bit mapped register 2 4 4 Answer in originating mode 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 5 32 20 Disab
Command bit 6 S41= bit 0 S42= dec hex Function and description 64 Enables type 4 ring detection dec hex Bit mapped register 1 1 Special MNP compatibility (see also S27.0, S38.5) 2 4 4 Disable retrain abort, up to 5 min. for special satellite line condition 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 for 0.
Command bit dec hex Function and description 0.5 seconds at carrier loss S43= bit dec hex Bit mapped register 0 1 1 Disable ZyXEL 16800 in MultiAuto mode 1 2 2 Disable ZyXEL 19200 in MultiAuto mode 2 4 4 Disable cellular mode automatic transmit power adjustment (see also S49b0-3) 3 0 0 Enable cellular mode in MultiAuto mode. 8 8 Disable cellular mode in MultiAuto 6 64 40 Enable 1.
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 follows the link speed. (See also S18) 7 128 80 Enable UK (Australian, Singapore, Indian, etc.,) type short-to-short (discontinuous) ring-back detection.
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. &N12 Originate mode modem speed (Send/Receive) 1200/75; Answer mode modem speed (Send/Receive) 75/1200 4 16 10 (Work with &D1 command) DTR ON will have the modem dial the default number and DTR OFF will have the modem hangup and reset to profile 0.
Command bit dec hex Function and description Ref. reaches the preset value. Set value ‘0’ to disable this function.
Command bit dec 0 8 16 24 7 0 128 S56= S57= dec 0255 bit dec 4 16 6 0 64 S62= bit dec 0 0 1 hex 0 8 10 18 0 Function and description Ref. -43 dBm (Default) -33 dBm -26 dBm -26 dBm Select ‘Mark’ as the first signal &N12 of the V.23 handshaking sequence (Default) 80 Select ‘Space’ as the first signal &N12 of the V.
Bit dec hex +nnn Note: S-register bit number, 'b', used in 'ATSr.b=n' and 'ATSr.b=?' Decimal value, 'x', used in 'ATSn=x' Equivalent Hexadecimal value. Factory default when listed in 'Reference' column. 'AT' is omitted when an AT command is referred to in the 'Reference' column.. Result Code Options "ATXn" Result Code Option Table The following table shows the different options available when setting the ATXn command. The default value for ‘n’ is 5 when your modem is shipped.
ATV0 ATV1 X0 X1 X2 16 CONNECT 12000 % % 17 CONNECT 14400 % % 18 CONNECT 16800 % % 19 CONNECT 38400 % % 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 CONNECT 102400 % % 29 CONNECT 61440 % % 30 CONNECT 51200 % % 31 CONNECT 624000 % % 32 CONNECT 124800 % % 33 CONNECT 62400 % % 34 CONNECT 41600 % % 35 CONNECT 31200 % % 36 CONNECT 24960 % % 37 CONNECT 20800 % % 38 CONNECT 33600 % % 3
** 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: CONNECT DTE_Speed CONNECT DTE_Speed/Protocol DCE_Speed/Error_Control † Example: CONNECT 38400/V.32bis 14400/V.
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.
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. • Remote Digital Loop-back with Self-Test. The diagnostic tests listed above apply to several modes of operation: asynchronous or synchronous, error controlled or non-error controlled, data compression enabled or disabled data mode.
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 test. 1 ROM TEST FIAL.... ROM code checksum error. 2 RAM TEST FAIL.... System RAM fails. 3 LOADING EEPROM checksum error. The factory DEFAULTS. default settings will be downloaded to the EEPROM and the self-test will be re-initiated.
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 terminate the test. Analog Loopback (AT&T1) This test can check almost every part of the modem and the RS-232 cable except the telephone line outgoing interface.
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 applicable when the remote modem does not provide V.54 Remote Digital Loopback capability. This test can be initiated by the local modem when the modems are on-line.
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 flash on and off for 1/2 second each to indicate that the modem is dialing. This flash will continue after dialing until a carrier is detected.
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.22/22bis, the difference can be as high as 8 dB because the modem only uses part of the 3 KHz bandwidth and rejects more than half of the voice band noise. Received Signal Power Level (RX) This reading is expressed in 0.1 dBm resolution.
Retrain Granted (RTG) The count of the granting of the remote modem's retrain requests. Each request is an indicator of bad receiving conditions. Retrain Requested (RTR) The count of the local modem's requests for the remote modem to retrain when the signal quality is poor. Round Trip Echo Delay (RTD) Measured in T (1/2400 sec.). Will be re-measured in every retrain action. Carrier Loss Counter (CLC) When operated over a leased line, it is the count of the carrier's temporary drop-out, if there is any.
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 incorrect cabling or settings within your communications or fax software. This section provides a list of more common problems that you may encounter, followed by likely solutions.
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 command, but did not receive an OK or 0 result code. Solutions 1. Your communications software may be using a different COM port than your modem. Be sure both the software and your modem are addressing the same COM port. 2.
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 echo, or turn on your software program’s Echo (or duplex) feature. Problem Each character you type appears twice on your computer screen. Solution Both your modem and your communications software are echoing characters to your screen.
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 &Dφ and auto answer, if your modem is not connected to RS232 or DTR is not ready. Problem When you receive a phone call, your modem immediately seizes control of the telephone line. Solution Your modem may be configured for auto-answering. To disable autoanswer, type ATS0=0 and press Enter with the modem in command state.
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 communications software are using the same flow control method, type AT&T8 and press the Enter key with your modem in the command state. You should see a smooth “stair-stepping” ASCII test pattern flowing diagonally across your screen.
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 supports the XModem protocol. 5. Type ATUPX. 6. Press Enter and wait for the following prompt characters: You have chosen XMODEM (128 bytes data with checksum) protocol to update your modem.
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 repair. In the unlikely event that your modem fails to respond to AT commands after upgrading the flash EPROM: 1. Turn off the modem. 2. Press the D/V button while turning on the modem, then release the button after 5 seconds.
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 2 3 4 A RING TIP A1 PC Serial Port Pinouts Signal Pin 1 ITU-TSS Signal Name 101 EIA Signal Name AA 2 103 BA 3 104 BB 4 105 CA 5 106 CB 142 Connector Pinouts Pin/Signal Description Protective Ground (GND). Transmitted Data (TXD).
Signal Pin ITU-TSS Signal Name EIA Signal Name 6 107 CC 7 102 AB 8 109 CF 15 114 DB 17 115 DD 18 141 20 108/2 108/1 21 140 22 24 125 113 25 142 CD CE DA Pin/Signal Description (CTS). Data Set Ready (DSR). Signal Ground (GND). Data Carrier Detected (DCD). Transmit Clock Signal (source: DCE). Synchronous Receive Clock. Local Analog Loopback Test. Data Terminal Ready (DTR). Connect DCE to line Remote Digital Loop Test. Ring Indicator(RI). Transmit Clock Signal (source: DTE).
Macintosh Serial Port Pinouts The following table shows the wiring of a modem Macintosh hardware handshaking cable: Mac Din 8 1 Modem DB 25 4 & 20 2 3 4 5 6 7 8 5 2 7 3 8 7 144 Connector Pinouts Description DTR to RTS and DTR, Hardware Handshaking Out CTS to CTS, Hardware Handshaking In TX- to TXD, Data sent GND, Ground RX- to RXD, Data received not connected GPI to CD, Carrier detected GND, Ground, needed for RS-232 connections
Connector Pinouts 145
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, 36 DATA/VOICE Switching, 33 DEFAULT DIAL menu, 31 Dial Memory, 31 Dialing a Number, 32 Dialing from Synchronous Mode, 43 Dialing Messages, 34 Dialing using ATD Commands, 15 Distinctive Ring, 3, 56, 57, 58, 123 Extended,
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, 126 Result Code Options "ATXn", 121 Result codes, 17, 18, 19, 63, 80, 84, 113, 124, 132, 133, 134 RTS options, 43 Saving Settings, 21 Security, 3, 49, 50, 51, 99, 100, 113, 114 Functions, 49 Levels, 49 2 Index User Passw
