U-336E User’s Manual Version 1.0 (Mar.
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.
rights, and you may also have other rights which vary from state to state. Copyright ©1997 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. Note: ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein.
and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. If this equipment does cause harmful interference to radio/television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and the receiver.
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.
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. Council Directive 91/263/EEC of 29 April 1991 on the approximation of the laws of the Member States concerning telecommunication terminal equipment. (The Telecom Terminal Equipment Directive) 3. 93/68/EEC of 22 July 1993 amending the Directives 89/336/EEC, 91/263 /EEC and 92/31/EEC.
• 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.at • Postal Service: You can send written communications at the following address: ZyXEL Communications Corporation 6, Innovation Road II, Science-Based Industrial Park Hsinchu, Taiwan 300, R.O.C. or ZyXEL Communications Inc.
Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 Unpacking Your Modem 1 Enclosed Equipment 1 Required Equipment 2 Becoming a Registered Owner 2 Modem Features 3 Standard Features 3 Intelligent Features 3 Fax Compatibility 4 Technical Specifications 5 2 Installation 7 Front Panel 7 Front Panel LEDs 7 Front Panel Switches 9 Rear Panel Markings 9 Modem Connection 10 Powering Up 11 3 Basic Modem Operation 13 Understanding
Dialing and Answering Techniques 15 Dialing using the ATD Command 15 Auto-Answer and Hook Controls 16 Making Your First Connection 16 Quick Tips when issuing AT Commands 17 Modem Result Codes 19 Viewing S Register Values 20 Changing S Register Values 20 Non-Volatile Memory 21 Storing Phone Numbers 21 Dialing Stored Phone Numbers 21 Saving Settings and User Profiles 22 Helpful Hints for PC Computers 22 Default Modem Settings for PC’s 23 ZyXEL Serial/Parallel I/O Card 24 Helpful Hints for Mac Computers 24
5 Special Functions 31 Security Functions 31 Levels of Security 31 User Passwords 32 Remote Configuration 34 Caller Number Delivery (Caller ID) 35 Distinctive Ring 38 Extended Distinctive Ring (EDR) 40 Setting Up EDR 41 EDR Application Example 42 6 Fax Operation 45 Fax Basics 45 Modem as Fax Machine 46 ITU-T T.30 Fax Protocol 46 Fax Command sets 47 Defining the Fax Command Sets 47 Class 1 Command Set 48 Class 2 Command Set 49 Class 2.
S-Register Descriptions 84 Basic S-Registers "ATSn=x" 84 Extended S-Registers "ATSn=x" 85 Result Code Options 102 "ATXn" Result Code Option Table 102 Result Code Field Descriptions 105 Connect Strings for Error Corrected Connections 105 9 Diagnostics & Troubleshooting 107 Diagnostics 107 Power-On Self Test 107 Resetting The Modem 108 Loopback Tests 109 Indicator Lights 110 Line Condition Status Display 111 Trouble Shooting 113 AT Command Set Problems 113 Command Echo Problems 115 Answer Problems 115 Dial
Index 124 xii
1 Introduction Congratulations on the purchase of your U-336E modem - one of ZyXEL's premier high-performance products. The U-336E modem is world renown for its ability to maintain ultra high speeds and clear, quality connections while communicating around the globe. If you do not find information on a specific topic, or if you would like more information about a topic covered in your User's Manual, please call ZyXEL Technical Support at 714-693-0808.
Contact your dealer or the store where you bought the modem if anything is missing. Check the modem for shipping damages. If you find any damage, contact the shipping agency immediately. Retain shipping and cushioning materials for future storage or shipping needs. Please direct any additional questions about damaged or missing materials to your dealer or distributor, or contact ZyXEL customer service using the information on page vi.
not necessary for product repair/or replacement. Save your dated invoice as proof of purchase. 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.
• Asynchronous and synchronous modes for reliable serial data communication. • Fast retrain with automatic fall-forward and fall-back. Your modem will automatically fall back to lower speeds when communicating with slower modems and when encountering unstable or variable line conditions. • Call-back security and password protection restricts access to authorized callers only.
• 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. • Data/Voice toggle switch. • Configuration settings: software programmable with nonvolatile memory for phone number/profile storage. • Diagnostics: self test, analog loopback (with self test), digital loopback, and remote digital loopback (with self test).
6 Introduction
2 Installation This chapter describes the panel function and installation procedure for the U-336E. 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.
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. CD Carrier Detect indicator; lights up when a valid carrier is detected present on the line. 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.
Front Panel Switches A/O Determines if the modem is in originate mode or answer mode when the modem is on-line. D/V Toggles the modem on-line (off-hook, DATA mode) or offline (on-hook, VOICE mode, the telephone set is connected to the line). Rear Panel Markings The U-336E rear panel is shown below: Figure 2-2 Rear Panel The following explains the connectors and switch on the rear panel. • POWER Power switch, turns the modem ON or OFF. • POWER JACK Input terminal for power adapter.
• EIA-232D Serial port DB25S connector, for connection to the serial port of a DTE (computer/terminal). Pin assignments are listed in Chapter 11 Connector Pinouts for your reference. The signalpin assignments for RJ-11 phone jacks are also listed in Chapter 11 Connector Pinouts. Modem Connection When you connect your modem to the power line, make sure you only use the power adapter that is supplied with this unit.
Powering Up Once your modem’s power switch is turned ON, a series of diagnostic tests will be performed. For a more detailed description of these diagnostic tests, please refer to Chapter 9 Diagnostics & Troubleshooting. After performing the diagnostic tests, your modem is ready for use.
12 Installation
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-336E communicates asynchronously with computers using AT commands. AT commands are used to configure and control your modem.
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. Once your modem is connected to your computer’s serial port and telephone line, open the Windows 95 “Accessories” program group, and open the Hyper Terminal Program. The program will prompt you for a name and Icon to use for your new connection. Type the name Test Connection and press .
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. To abort the operation, press any key, or select “Disconnect” from the “Call” menu.
Pausing During Dialing: O NOTE: ATDT 9,,555 1212 THE PAUSE TIME FOR EACH COMMA IS DEFINED BY S REGISTER S8. DEFAULT IS 2 SECONDS PER COMMA.
Start the terminal program by double-clicking the Test Connection icon. When the terminal window appears, enter the dial command with ZyXEL’s BBS as the phone number. Type: ATDT17146930762 (Omit the ‘1714’ if you are in this area code) The modem will go off-hook, dial the number, and after a few seconds of negotiation tones, you should be connected to our BBS. You will receive a login message asking for your name. For the purposes of this example you need not continue.
terminal window when you type, the modem’s echo setting is probably set to off. In this case, issue the ATE1 command. • When a command is successfully issued and accepted, a modem responds with a “Result Code.” Your modem supports both “verbose” result codes (i.e. “OK”), and “numerical” result codes (i.e. “0”). You can use the ATV command to set it one way or the other as follows. Command ATV0 ATV1 Description Select numerical result code. Select verbose result code.
AT Command Set/Type S-Register command S-Register bit-mapped command (set S-Register bit 1 equal to 1) S-Register inquiry command Example ATS0=1 ATS13.1=1 ATS0? Or ATS13.1? You may browse the lists of available commands for each command set by using the on-line help commands: AT$, AT*$, AT&$, and ATS$. Further detail on AT commands will be covered in the chapters that pertain to their use.
modem uses. By default, your modem uses result codes equivalent to the ATX5 command. The result code options will be covered more thoroughly in later chapters. Viewing S Register Values Status registers (or "S-registers") contain values that determine the modem’s operating characteristics. Whenever you send an AT command to your modem, you are actually changing the value of an S-register. You can use the Sr? command to view the value of S-register ‘r’.
Non-Volatile Memory The U-336E has an amount of memory set aside for storing user information such as frequently used phone numbers and default command settings. The latter is particularly useful when using your modem to call a variety of different locations that require different settings. For this reason, your modem provides a number of user “Profiles” that can be accessed through simple AT commands.
Saving Settings and User Profiles There are some cases where you may wish to save the settings you have made as the default settings that are recalled when your modem is powered up. The AT&WZ command selects the current settings as the power-on profile. There are four profiles that can be changed by the user, and one factory default profile.
your software supports it, replace the 16450 UART with a 16550 model. This newer chip has an internal buffer and generates an interrupt for up to every 16 characters (several trigger levels are available). With this UART installed, you may drive your serial port at 57600 bps and above. While data is written from the transfer-buffer to your hard-disk, characters may be lost at the serial port. This is due to the fact that disk-access interrupts have a higher priority than serial port interrupts.
ZyXEL Serial/Parallel I/O Card For high-speed PC to modem communication, ZyXEL produces a special I/O adapter card. This card includes a serial port and a parallel port, each with special features, particularly when working with a ZyXEL modem, for example: The serial port is 16550-compatible for most communication software usage. It has a speed of up to 460.8Kbps and data loss errors will not occur when working with a ZyXEL modem's serial port.
Mac Software Tips All terminal programs which make use of the hardware handshaking feature can be used on the Apple Macintosh. Such programs are readily available as PD, shareware or commercial software. One of the most powerful shareware programs available is ZTerm. Fewer programs are available to make use of the ZyXEL's fax features.
Basic Modem Settings for UNIX Unix environments usually don’t like modem responses or echoing of commands. Therefore you should set ATE0Q1. Depending on your Unix setup, the cable and software used, you may have to disable carrier detection using AT&C0. Unix Software Tips In order to use your ZyXEL modem from a terminal or an XWindows 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.
4 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. Twowire 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-336E default line is a dial-up type.
answering 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.
30 Leased Line Operation
5 Special Functions This chapter describes special features of the U-336E, 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 1 security, the local modem will maintain the connection if the password is OK, otherwise the line disconnected. • 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 dialback numbers are the modem’s 50 stored phone numbers.
The following commands will enable different types and Verify: (Enter the new supervisor password again) ******** 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 O NOTE: 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.
Remote Configuration Remote configuration on the U-336E 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. O NOTE: PLEASE REFER TO THE BELLCORE TECHNICAL ADVISORY DOCUMENT TR-NWT000030 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.
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. Each bit controls the answering of a particular ring type.
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.
tone and 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.
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.
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. Save the settings in a profile and reset the modem with AT&WZ.
44 Special Functions
6 Fax Operation The U-336E can be used as a fax machine. In the sections below, we will describe how the modem works as a fax machine, the ITUT 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.
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. Fax image coding and decoding must be done in the computer.
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.
formally approved version is the Class 2.0 command set, also called the TIA-592 standard. Class 1 Command Set Command +FCLASS=n O NOTE: 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 S57.4=0 (DEFAULT), THE RESPONSE TO THE +FCLASS=? COMMAND WILL NOT REPORT CLASS 1 CAPABILITY. THIS IS DUE TO THE FACT THAT SOME FAX SOFTWARE PACKAGES MAY GET CONFUSED BY THIS RESPONSE.
Value Modulation Speed Requirements 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.17 w/st 12000 required for FTM & FRM 145 V.17 14400 required for FTM & FRM 146 V.17 w/st 14400 required for FTM & FRM * w/st means with V.
Command Value Description 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. +FCIG="string" Local fax station ID string, for polling Rx.
Command Value 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 +FDCS=vr,br,wd, ln,df,ec,bf,st +FDIS=vr,br,wd,l n,df,ec,bf,st Description 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. Page length: A4; 297mm.
Command +FDR +FDT=df,vr,wd, ln +FET=n +FK +FLID="string" +FLO=n +FLPL=n +FMDL? +FMFR? +FMINSP=n 52 Fax Operation Value Description Receive phase C data command; initiates document reception. Transmit phase C data command: release the DCE to proceed with negotiation. 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. n=4 Procedure interrupt; another page follows.
Command Value n=3 n=4 n=5 0-255 Description 9600 bps. 12000 bps. 14400 bps. +FPHCTO= 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. +FPTS=n Page transfer status n=1 Received page good. n=2 Page bad; retrain requested. n=3 Page good; retrain requested. n=4 Page bad; procedure interrupt requested. n=5 Page good; procedure interrupt requested.
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. +FDIS:vr,br,wd,l Report session negotiation parameters n,df,ec,bf,st response; refer to +FDCC=.... command. +FDTC:vr,br,wd, Report remote capabilities response; ln,df,ec,bf,st refer to +FDCC=.... command.
Response Value Function and Description 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. Class 2 Flow Control Flow control is necessary to match the DTE-DCE data rate to the line signaling rate while transmitting or receiving Group 3 (T.4) data.
Command ln,df,ec,bf,st Value Description +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. rq=2 DCE Receive Copy Quality Correction enabled. tq=0 DCE Transmit Copy Quality Checking disabled.
Command Value Description 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. n=1 Procedure interrupt requests from the remote station are accepted, negotiated and reported using the +FVO response.
Command +FMR? +FMS=n +FNR=rpr,tpr, idr, nsr +FNS="string" 58 Fax Operation Value Description 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. +FIS: and +FTC: response reports are generated.
Command +FPI="string" +FPR=n +FPS=n +FRQ=pgl,cbl +FSP=n Value Description 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). Page transfer status: refer to the +FPTS Class 2 command in previous sections for settings.
Command Value Description 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 hsc= 70-8F hsc= 60 Fax Operation 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 90-9F hsc= A0-BF Function and Description 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. Report remote ID response-Polling Station ID (CIG). Remote polling indication. .
Response Value +FTC:vr,br,wd,ln ,df,ec,bf,st +FTI: "TSI ID string" +FVO Function and Description 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. Extended Fax AT Command Set Extended Fax AT Commands are unique to ZyXEL modems.
Command #B1 #B2 #B3 Function 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. When the modem receives a DC2 from the DTE, it starts to send the fax connection parameters/SnnnnVnTnRnLnCnP then the received fax data. In this mode, the modem will wait for DC2 at the beginning of every page.
Command #L0 #L1 #L2 #C0 #C1 #C2 #C3 #C4 #C5 #C6 #C7 #P Function Set maximum recording length: A4 (297 mm ). Set maximum recording length: B4 ( 364 mm ). Set maximum recording length: unlimited. Set minimum scan line time capability of the receiver: 20 ms at 3.85 line/mm, T(7.7)=T(3.85). Set minimum scan line time capability of the receiver: 5 ms at 3.85 line/mm, T(7.7)=T(3.85). Set minimum scan line time capability of the receiver: 10 ms at 3.85 line/mm, T(7.7)=T(3.85).
TONE NO CARRIER Handshake fails or no carrier is detected or time-out. BUSY Other party's phone line is busy. NO ANSWER Quiet answer is not detected before time-out. CONNECT FAX See below. When a fax connection is successfully established, the modem returns this message: CONNECT FAX/SnnnnVnTnRnLnCnP This message includes the connection speed and the fax parameters explained in the table below.
Field DISCONNECT1 P Description 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. Flow Control In extended fax AT command mode, the U-336E always uses hardware (CTS/RTS) flow control. The flow control signaling used sending a fax is: • CTS is used by your modem for DTE flow control.
• 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. Fax Reception from a BBS The U-336E can automatically detect data and fax calls and allow BBS software to receive faxes on the same phone line.
2400 • CONNECT 2400 38400 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.
7 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. Command Options Function & Description Ref. A Go on-line in answer mode. (See also S39.2, S43.6) Bn Handshake option.
Command Options 0-9, #, * P T , DL DSn En Hn In Function & Description Digits for dialing Pulse dialing Ton dialing 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 second silence before proceeding R Reverse handshake (go on-line in Answer mode) W Wait for second dial tone.
Command Options Function & Description Ref. 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 S24.5-7 4* the value, the higher the volume Mn Speaker control S21.1-2 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.'N0' will S24.
Command Options Function & Description Ref. UPX Download firmware to the Flash EPROM by using Xmodem protocol Vn 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 * Display result code in verbose form. Xn n=0-7 Result code options, see the S23.3-5 5* Options Table Zn n=0-4 Reset modem and set power-on S15.5-7 profile. Zn Reset modem and load user profile n (0-3). Z4 Reset modem and load factory settings.
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 Blocks Resent Local hang up Description Data received from or sent to DTE (PC). (Formatted as 7,E,1 or 7,O,1 or 8,N,1 etc.
Output Parameter Max Outstanding Max Block Size Retrains Requested Link Duration Retrains Granted T401 Time-outs T402 Time-outs FCS Errors Round Trip Delay Xmitter Underrun Receiver Overrun Disconnect Reason Output Value Description or protocol incompatibility.) Maximum blocks received without acknowledgment by remote modem. Maximum octets contain in a block The number of times local modem requested retrain. Total link duration time (in minutes). The number of times remote modem requested retrain.
Output Parameter Output Value Description Security check ATH command D/V hang up Inactivity Extended AT& Command Set Command Options Function & Description Ref. &Bn Data rate, terminal-to-modem. S28.6 (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 S44.6) &Cn Carrier Detect (CD) options S21.4 &C0 CD always ON (See also S42.7) &C1 * CD tracks presence of carrier (See also S38.3, S42.7) &Dn Data Terminal Ready (DTR) S21.
Command Options Function & Description &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. &Jn Type of Phone line &J0 Single phone line, RJ-11 &J1 Multiple phone/modem line, RJ12/RJ13 &Kn Modem error control and data compression. &K0 No error control.(Same as AT&K) &K1 MNP4 (See also S41.0). &K2 MNP4+MNP5 (See also S38.5, S41.0). &K3 V.42+MNP4. &K4 * V.42+V.
Command Options Function & Description Ref. &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.33 14400/12000 (models with 4wire leased lines only) &N2 V.33 12000 (models with 4-wire leased lines only) &N3 V.32 9600T/9600/7200T/4800 &N4 V.
Command Options &N13 &N14 &N15 &N16 &N17 &N18 &N19 &N24 &N25 &N32 &N34 &N35 &N36 &N37 &N38 &N39 &N42 &N43 &N44 &N45 &N46 &N60 &N61 &N62 &N63 &N64 &N65 &N66 78 AT Command Set Summaries Function & Description Ref. V.23 600/75 (See also S52b7) V.22bis 2400/1200 V.22 1200 V.21 300 V.32bis 14400/12000/9600/7200/4800 V.32bis 12000/9600/7200/4800 V.32bis 7200/4800 BELL 212A 1200 BELL 103 300 G3 Fax V.17/V.29/V.27ter 14400/12000/9600/7200/4800/240 0 (See also S42.4).
Command Options &N67 &N68 &N69 &N70 &N71 &N72 &N73 &Pn &P0 * &P1 &Rn Ref. &Sn S21.3 &Tn Function & Description V.34 16800 V.34 14400 V.34 12000 V.34 9600 V.34 7200 V.34 4800 V.34 2400 Pulse dial make/break ratio make / break, 39% / 61% make / break, 33% / 67% RTS (Request To Send) function selection &R0 CTS tracks RTS, response delay is set in S26 &R1 * Ignore RTS, assumes RTS always ON Data Set Ready (DSR) function selection. &S0 * DSR overridden, DSR always ON. &S1 DSR according to CCITT (ITUTSS).
Command Options Function & Description Ref. (RDL) test &T7 Initiate Remote Digital Loop-back with self test (RDL+ST) &T8 Initiate Analog Loop-back with self test. (ALB+ST) &Vn View profile settings. &V0 View current active settings. &Vn View the (n-1) user profile settings (n=1-4) &V5 View factory default settings. &Wn n=0-3 Write current settings to user profile n in non-volatile RAM. (See also S35.6) &Xn Synchronous mode timing (clock) S14.
Command Options Function & Description Ref. &Z? Display all the phone numbers stored in non-volatile RAM. &Zn=s n=0-49 Write phone number/s to NVRAM at location n (n=0-49) use AT*Dn or ATS29=n to set the default dial pointer. Extended AT* Command Set Command Options Function & Description Ref. *Cn Character length, including start, S15.3-4 stop and parity bit. *C0 * 10-bit character length. *C1 11-bit character length. *C2 9-bit character length. *C3 8-bit character length.
Command Options Function & Description *G1 Enable type 1 security, with password check (ZyXEL to ZyXEL only) *G2 Enable type 1 security, with password check and call back (ZyXEL to ZyXEL only) *G3 Enable type 2 security, with password check *G4 Enable type 2 security, with password check and call back *G5 Enable type 2 security, with password check and call back, remote user enters the call back number *Hn n=0-49 Modify user password table at location n.
Command Options Function & Description Ref. *Q0 No action to poor signal quality. *Q1 Retrain action taken if signal quality is poor. (See also S41.2) *Q2 * Adaptive rate, automatic fall-back or forward. *Q3 Disconnect if signal quality is poor. *Rab Read remote profile “b” to local S36.1 a=0-3 b=0-3 b=4 b=5 *Sn *T *V *Wab Local user profile number “a” S37.4-7 Remote user profile number “b” S37.
8 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 +Ref. S0= Set the number of rings on which the +000 modem will answer.
Command Function & Description +Ref. modem will dial as soon as it detects a dial tone. This 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 Ref.
Command bit dec hex Function and description 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 0-73 0-49 setting value as 'AT&Nn' command S20= dec hex DTE speed (bps).
Command bit dec hex Function and description Ref. 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 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 108.2, DTR OFF causes the modem to hang up and reset the modem to profile 0 after DTR dropped S23= bit dec hex Bit mapped register 0 0 0 Command echo disabled 1 1 Command echo enabled 1 0 0 Tone dial. (Default) 2 2 Tone dial.
Command bit dec hex Function and description 56 38 ATX7, error control result code enabled 6 0 0 Display result code in numeric format (see S35.7) 64 40 Display result code in verbose format 7 0 0 Modem returns result code 128 80 Modem does not return result code (see also S40.
Command bit dec hex Function and description S38.5, S41.0) 3 3 V.42+MNP4 4 4 V.42 + V.
Command bit dec hex 4-5 0 0 16 10 32 20 6 0 0 7 1 64 0 0 * 128 80 S29= S31= S32= S35= 0-49 0-31 0255 0255 bit dec 0 1 0-FF 1 2 2 2 4 4 3 8 8 4 16 10 0-FF hex 1 Function and description No guard tone Reserved 1800 Hz guard tone DTE/DCE rate follows link rate (See also S18, S44b6) DTE/DCE rate is fixed at the DTE setting, range from 300460.8 Kbps (default, also see S18, S44b6) Select V.
Command bit dec hex Function and description Ref. default number. 5 32 20 Enable Selective Reject in V.42 (Default) 6 64 40 Enable password protection to *W0 profile saving. When ‘AT&W0’ is issued, and profile 0 in the NVRAM has this bit set, the supervisory password will be requested. This bit in profile 0 also protects the supervisory password from a hardware reset. 7 128 80 Enable extended numerical V0 result codes from 50-71 when S23.6 an error corrected connection is made. Use with ATV0.
Command bit dec hex Function and description Ref.
Command bit dec hex Function and description 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 Disable srambler/descrambler in V.26bis mode. Enables compatibility with older V.
Command bit dec hex Function and description for 0.5 sec DCD on-off transition 6 64 40 Force S0>=2 7 128 80 Ignore calling tone, not to be used as fax detection S42= bit dec hex Bit mapped register 1 2 2 Enables throughput averaging 2 4 4 CND message will be forced on even if AT02 is set 3 8 8 Disable escape sequence code in answer mode 4 16 10 Disable V.
Command bit dec hex Function and description Ref. off-hook and modem answering 7 128 80 Modem hang-up if the line condition does not permit modem to run highest speed set by ‘&Nn’ command S44= bit dec hex Bit mapped register +000 3 8 8 ATDSn initiates auto-dial of DSn the stored numbers consecutively until connection is made 4 16 10 DSR follows DTR (see also &S1 S41.5) 5 32 20 Enable V.
Command bit dec S45= dec 0255 S46= dec 0255 hex Function and description hex Delay during which the CND 0-FF silence detection is disabled, in 20 ms units. (See also S46) hex CND silence detection interval 0-FF To process the CND, silence must be detected for the specified interval, in 20 ms units bit dec hex Bit-mapped register 0 1 1 Cause CND information to be reported in raw format 1 2 2 Enable DATA ONLY mode. Auto-detect V.34/ZyX/V.32bis/V.22bis/V. 23/V.21 Bell 103 when answering.
Command bit dec hex Function and description Ref. idle (waiting for command), it will not dial any number when DTR changes from ON to OFF S49= bit dec hex Bit-mapped register +006 3-0 0-15 0-F Set cellular mode transmit power level -9 to -24 dBm. (See also S43b2) 7 0 0 For cellular mode only. Modem is installed in office (Default) 128 80 For cellular mode only.
Command bit dec hex Function and description DTMF tone 12 0C Reserved 5-4 0 0 Disables fax-CNG tone detection (Default) 16 10 Reports RING for fax CNG tone 32 20 Reports RING 1 for fax CNG tone 48 30 Reports RING 2 for fax CNG tone 7-6 0 0 Disables data CNG tone detection 64 40 Reports RING for data CNG tone 128 80 Reports RING 1 for data CNG tone 192 B2 Reports RING 3 for data CNG tone S52= bit dec hex Bit-mapped register 4-3 0-24 0-18 Receive level adjustment 0 0 -43 dBm (Default) 8 8 -33 dBm 16 10 -26 dB
Command bit dec hex Function and description Ref. 255 of 10ms, country specific S57= bit dec hex Bit-mapped register 4 16 10 Enables the reporting of Class 1 capability in the response to +FCLASS=? 6 0 0 Disabled busy detection when dialing is proceeding (Default) 64 40 Enables busy detection in dialing period S62= bit dec hex Bit mapped register +000 0 0 0 Force the modem to use the new values of S18 to fix the baud rate when answering.
The default value for ‘n’ is 5 when your modem is shipped.
ATV0 ATV1 X0 X1 X2 X3 X4 X5 X6 31 CONNECT 624000 % % % % @ 32 CONNECT 124800 % % % % @ 33 CONNECT 62400 % % % % @ 34 CONNECT 41600 % % % % @ 35 CONNECT 31200 % % % % @ $ 36 CONNECT 24960 % % % % @ 37 CONNECT 20800 % % % % @ 38 CONNECT 33600 % % % % @ $ 39 CONNECT 28800 % % % % @ $ 40 CONNECT 26400 % % % % @ $ 41 CONNECT 24000 % % % % @ $ 42 CONNECT 21600 % % % % @ $ * Use S42.
Result Code Field Descriptions Field Name Error_Code Error_Control Data_Compression DCE_Speed DTE_Speed Possible Values NONE, ARQ LAPM, V42 (This field will not show if no error control is negotiated) V42b All possible DCE speeds supported All possible DTE speeds supported 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.
106 Status Registers & Result Codes
9 Diagnostics & Troubleshooting Diagnostics The U-336E 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 nonerror controlled, data compression enabled or disabled data mode.
DSP 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 DEFAULTS. factory default settings will be downloaded to the EEPROM and the self-test will be re-initiated.
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. During Analog Loopback testing, data from the terminal or computer is sent through an RS-232 cable into the modem's transmitter and is modulated to an analog signal.
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. Remote Digital Loopback Test (AT&T6) This test will request the remote modem to do a digital loopback. During testing, the local modem will send a remote digital loopback request to the remote modem according to V.54. If the remote modem supports V.
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. Therefore, the V34 LED will also flash in leased-line modem connections when one modem is trying to handshake but the other modem is not turned on. Handshaking And Retrain Indicator The V34 LED will flash on and off in 1/2 second intervals to indicate that the modem is handshaking or retraining.
Received Signal Power Level (RX) This reading is expressed in 0.1 dBm resolution. The modem measured receiving signal power is generally within 1-2 dBm of the actual value with relative accuracy. The receiver sensitivity specification for your modem is -43 dBm. Strong signal power could cause signal saturation in the channel and degrade the data validity. To avoid this situation, decrease the transmission power of the remote modem.
FRN Request (FR) The count of the local modem's requests to change the rate. Block Retransmitted (BR) The count of the blocks retransmitted (bad reception on the remote modem). FCS (Frame Check Sum) Errors (FE) The count of the FCS errors received (block errors) (bad reception on the local modem). Trouble Shooting Your modem is designed to provide years of ultra high speed satisfaction.
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. You may have omitted the characters AT from the beginning of the command line. These characters must appear at the beginning of each command line. 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 +++.
Solution You may have typed a command that is not recognized by your modem or communications software. Command Echo Problems Problem You do not see any typed characters on your computer screen. 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.
have the modem answer on the first incoming ring To autoanswer after a specific number of rings, replace 1 with a value up to 255. Do not assign a value of 0, which turns off autoanswer, unless your software can respond to the modem’s RING result codes. 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.
Data Transfer Problems Problem You can make a data connection with a remote modem, but encounter frequent errors during data transfers. 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.
10 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.
11 Connector Pinouts Phone Jack Pinouts The ZyXEL U-336E 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 EIA Signal Signal Name Name 101 AA 2 103 BA 3 104 BB 4 105 CA 5 106 CB 120 Connector Pinouts Pin/Signal Description Protective Ground (GND). Transmitted Data (TXD).
Signal Pin 6 ITU-TSS EIA Signal Signal Name Name 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 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). Test Indicator.
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 7 122 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 123
12 Index AT commands, 5, 13, 14, 15, 17, 18, 19, 21, 32, 45, 62, 63, 66, 111, 115, 116, 122 Combining, 17 Quick Tips, 17 ATI2 Output, 72 Auto-Answer, 8, 16 Caller ID, 4, 35, 36, 38, 42, 83 Command Characters, 15, 23 Contacting ZyXEL, vi Dialing using ATD Commands, 15 Distinctive Ring, 4, 38, 39, 40, 105 Extended, 40 Echo feature, 18, 26, 70, 91, 116, 117 EDR Application, 42 Error messages, 110 Factory default profile, 22 Fax Command sets, 47, 62 Flow Control, 66 Fax Compatibility, 4 Fax Operation Basics, 4
Result Code Options "ATXn", 104 Result codes, 18, 19, 20, 45, 62, 66, 95, 106, 116, 117, 118 Saving Settings, 22 Security, 4, 31, 32, 33, 82, 96 Functions, 31 Levels, 31 User Passwords, 32 SMARTDRV, 23 S-register, 20, 21, 39, 41, 71, 72, 85, 103 Technical Specifications, 5 Testing your modem, 17 Trouble Shooting Answer Problems, 118 AT Command Set Problems, 115 Command Echo Problems, 117 Connection Problems, 119 Data Transfer Problems, 119 Dialing Problems, 118 UART 16450, 23 UNIX, 3, 26, 96 Serial cable,
