Manuale d’uso / di manutenzione del prodotto U-336R/RE del fabbricante ZyXEL Communications
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U-336R/RE User’s Guide Version 1.0 (Mar. 1997) ZyXEL A CCESSING I NTERNET & I NTRANET.
ii 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.
iii 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.
iv 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 rece.
v 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.
vi 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.
vii • 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 and Asian versions and related files, use the address: ftp.
viii Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 What This Manual Covers 1 Modem Features 1 Standard Features .
ix Dialing using the ATD Command 17 Auto-Answer and Hook Controls 18 Making Your First Connection 18 Quick Tips when issuing AT Commands 19 Modem Result Codes 21 Viewing S Register Values 22 Changing .
x Connecting to a Leased Line 35 Line Type Setting 35 Power Level Setting 36 Leased Line Handshaking 36 Manual Connect 36 Auto Handshake 36 Leased-Line Dial Backup 37 Dial Backup 37 Aborting from Leas.
xi 8 AT Command Set Summaries 77 Basic AT Command Set 77 Description of ATI2 Output: 80 Extended AT& Command Set 83 Extended AT* Command Set 89 9 Status Registers & Result Codes 92 S-Register .
xii 12 Terminal Pinouts 133 Terminal Blocks 133 PC Serial Port Pinouts 134 Macintosh Serial Port Pinouts 135 13 Index 137.
Introduction 1 1 Introduction What This Manual Covers Congratulations on the purchase of your U-336R/RE modem - one of ZyXEL's premier high-performance products. The U-336R/RE modem cards are world renown for their ability to maintain ultra high speeds and clear, quality connections while communicating around the globe.
2 Introduction • 14 LED indicators (RE/RD). • 15 LED indicators (R). • Extended AT command set with V.25bis. • Operates on 2-wire dial-up or 2-wire leased line (RE).
Introduction 3 • EDR (extended Distinctive Ring). • Flash EPROM memory lets you easily upload new firmware , providing you with easy access to new features. • ZyXEL exclusive Kernel Recovery Mode for no hassle recovery from failed flash uploads - no factory repairs.
4 Introduction • Line interface: 2-wire dial-up or 2-wire leased line (RE). • Line interface: 2-wire dial-up or 2/4-wire leased line (R). • Call progress monitoring: dial tone, busy, and ring back detection. • Audio Monitor : programmable volume control.
Introduction 5 • Computer terminal. • Available PC serial port with a high-speed 16550 UART. • Standard "straight-through” RS-232 cable (pins 1-8, 20, 22). • Available telephone jack. • Available AC wall outlet. • Telephone line from your telephone company (dial-up or leased line).
6 Introduction.
Installation 7 2 Installation This chapter covers the steps required to install your U-336R/RE modem into a ZyXEL RS-1612 rack system. A separate comprehensive manual containing rack system information is included with your modem rack chassis. U-336R/RE Modem Card The U-336R front panel consists of fifteen LED indicators and two switch es.
8 Installation LED Name ON Blinking TXD Transmit Indicator The DTE is sending data to modem for transmission. RXD Receive Indicator The modem is sending received data to the DTE . CD Carrier Detect The modem senses a valid data carrier on the line. DTR Data Terminal Ready The attached computer is ready to send or receive data.
Installation 9 LED Name ON Blinking SQ Signal Quality Modem senses a good quality signal. Modem senses marginal signal quality. The following LED is for the U-336R only: LED Name ON Blinking LL Leased Line Mode Indicator Modem is in Leased Line Mode. There are two toggle switch es on the U-336R/RE front panel.
10 Installation Installing the modem card The rack system in which you will install your modem has sixteen available modem slots. You may use any slot for a card without regard to the slot number or sequence. To install a card: 1. Hold the modem card by the front and slide it into an available slot.
Installation 11 • U-336R Section 3 (terminals 5 ,6 ,7 & 8) For leased line connection. Connect to Computers Each modem slot has a corresponding 25-pin RS-232 female connector on the rear panel. Connect a cable from the desired computer to the RS-232 connector for the desired modem.
12 Installation 1496 modem. In many cases, the commands for these modems are identical. Select the following communication settings: Setting Value Baud rate 57,600bps Data bits 8 Parity None Stop bits.
Installation 13 10 for troubleshooting suggestions..
14 Installation.
Basic Modem Operation 15 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.
16 Basic Modem Operation 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.
Basic Modem Operation 17 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<Enter> Your modem will pick up the phone line, and try to communicate.
18 Basic Modem Operation Pausing During Dialing: ATDT 9 ,, 555 1212 O O N OTE : T HE PAUSE TIME FOR EACH COMMA IS DEFINED BY S R EGISTER S8. D EFAULT IS 2 SECONDS PER COMMA .
Basic Modem Operation 19 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.
20 Basic Modem Operation 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.
Basic Modem Operation 21 AT Command Set/Type Example S-Register command ATS0=1 S-Register bit-mapped command (set S- Register bit 1 equal to 1) ATS13.1=1 S-Register inquiry command ATS0? Or ATS13.1? You may browse the lists of available commands for each command set by using the on-line help commands: AT$, AT*$, AT&$, and ATS$.
22 Basic Modem Operation 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-register s") contain values that determine the modem ’ s operating characteristics.
Basic Modem Operation 23 Non-Volatile Memory Your modem 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.
24 Basic Modem Operation 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.
Basic Modem Operation 25 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.
26 Basic Modem Operation 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. This solves high-speed communication problems in Windows and other multi-tasking systems.
Basic Modem Operation 27 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.
28 Basic Modem Operation 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 screen or an X-Windows application, you need a program such as Minicom or Seyon .
Synchronous Mode Operation 29 4 Synchronous Mode Operation This chapter introduces you to the use of the U-336R/RE for synchronous operation. The modem can be used as a synchronous modem when it is connected to a synchronous computer or terminal.
30 Synchronous Mode Operation Syntax Command with Parameters* Description CRN CRN <dialstring>** Call request with number provided. CRS CRS n Call request with number from memory, 0 # n # 49; n is the memory location. PRN PRN n; <number> Saves <number> to address n (0 # n #49).
Synchronous Mode Operation 31 carrier and sends the data to the receiving DTE along with the clock . There are three types of transmission synchronous clock sources to choose from: 1. The internal clock is the one that suits most applications and is the default; in this case, the clock signal is generated by the sending modem.
32 Synchronous Mode Operation Command State Options For synchronous data communication, there are two options you can choose from to define how the modem will operate in the command state. SYNC DATA AT&M1 The modem accepts asynchronous commands in command state, but exchanges data synchronously in data state.
Synchronous Mode Operation 33 4. Manual dial : Set the modem to synchronous mode ( &M1 or &M3 ), then dial a number from a telephone set. When you hear the answer tone, type ATD (if &M1 is set). The modem will go into synchronous operation after connection.
34 Synchronous Mode Operation.
Leased Line Operation 35 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.
36 Leased Line Operation Power Level Setting Your modem’s leased-line mode transmission power level can be adjusted from 0 dBm to -27 dBm in 1 dBm increments. AT-Command Description AT*P0 . . . AT*P15 The default is -9dBm. The adjustable range is from 0 to -15dBm, effective in leased-line operation only.
Leased Line Operation 37 configuration. Be sure that one modem is set to originate mode and the other to answer mode. AT-Command Description AT*M0 When operating over a leased line, modem will handshake in originate mode. (Default) AT*M1 When operating over a leased line, modem will handshake in answer mode.
38 Leased Line Operation The originating modem will try to dial the number up to nine times or until a 3-minute time-out is activated. If the dial backup attempt fails, the originating modem will go back to try the leased line connection. If this fails, it will try the dial-up line again.
Special Functions 39 6 Special Functions This chapter describes special features of the U-336R/RE, and offers instructions on how each is used. Security Functions Your modem provides security that prevents unauthorized users from making connections. Two types of security functions are provided.
40 Special Functions • With level 1 security , the local modem will maintain the connection if the password is OK, otherwise the line disconnected. • With level 2 security , redial the phone number corresponding to the dial-in password. The line simply disconnects if the password does not match.
Special Functions 41 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.
42 Special Functions Remote Configuration Remote configuration for your modem 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.
Special Functions 43 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.
44 Special Functions 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.
Special Functions 45 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: <.
46 Special Functions O O N OTE : P LEASE REFER TO THE B ELLCORE T ECHNICAL A DVISORY DOCUMENT TR-NWT- 000030 FOR THE EXACT DATA FORMAT . T HE ABOVE C ALLER ID SCHEME APPLIES TO THE N ORTH A MERICA ONLY .
Special Functions 47 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.
48 Special Functions 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.
Special Functions 49 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. Setting Up EDR The new EDR can be used at home where multiple phones are installed in parallel.
50 Special Functions 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.
Special Functions 51 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.
52 Special Functions.
Fax Operation 53 7 Fax Operation In the sections below, we will describe how the U336R/RE works as a fax machine, the ITU-T T.30 fax protocol , the Class 1, 2, and 2.
54 Fax Operation ITU-T T.30 Fax Protocol The U-336R/RE takes full control of the ITU-T T.30 fax protocol , also known as G3 fax handshaking signals and procedures . Your modem initiates and terminates fax calls, manages communications sessions, and transports image data relieving the computer fax software of the T.
Fax Operation 55 Class 1 commands control on-line modem negotiation while Class 2 commands allow the modem to do many negotiations simultaneously. The Class 1 protocol uses the modem to transmit fax data only. The complete organizational overhead for this protocol is handled by the connected computer.
56 Fax Operation Command Value Description units. +FRS=n 0-255 Wait for silence, in 10 ms units. +FTM=<MOD> Transmit data with <MOD> carrier. +FRM=<MOD> Receive data with <MOD> carrier. +FTH=<MOD> Transmit HDLC data with <MOD> carrier.
Fax Operation 57 Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read current setting. Supported Commands (per TIA PN2388 8/20/90) Command Value Description +FAA= n Auto-answer mode parameter: n=0 Answer as set by +FCLASS.
58 Fax Operation Command Value Description parameter. n=0 No copy quality check capability. n=1 Only check 1D phase C data. n=2 Check both 1D and 2D phase C data. +FCR= n "Capability to receive" parameter n=0 DCE will not receive message data or poll a remote device.
Fax Operation 59 Command Value Description bf=0 Disable binary file transfer. st=0 Minimum scan time/line: 0 ms. st=1 Minimum scan time/line: 5 ms. st=2 Minimum scan time/line:10 ms (normal); 5 ms (fine). st=3 Minimum scan time/line:10 ms. st=4 Minimum scan time/line:20 ms (normal); 10ms (fine).
60 Fax Operation Command Value Description +FK Regular fax abort command. +FLID= "string" Local ID string parameter. +FLO= n Flow control options: n=0 No flow control. n=1 Set XON/XOFF software flow control. n=2 Set CTS /RTS hardware flow control.
Fax Operation 61 Command Value Description n=5 Page good; procedure interrupt requested. +FREL= n Phase C received EOL alignment: n=0 The EOL patterns are bit aligned as received. n=1 The last received bits of EOL patterns are byte aligned by the DCE, with necessary zero fill bits inserted.
62 Fax Operation Response Value Function and Description t +FET:n Post page message response; refer to the +FET=n command. +FHNG:n Call termination status response. n=00 Normal and proper end of connection. n=10 Transmit error on phase A hang up code.
Fax Operation 63 Class 2.0 Command Set Command Syntax Description +<command>=<value> Execute a command or set a parameter. +<command>=? Read permissible settings. +<command>? Read the current setting. Supported Commands Command Value Description +FAA= n Auto-answer mode parameter: n=0 DCE answers as set by +FCLASS.
64 Fax Operation Command Value Description tq=0 DCE Transmit Copy Quality Checking disabled. tq=1 DCE Transmit Copy Quality Checking enabled. tq=2 DCE Transmit Copy Quality Correction enabled. +FCR= n "Capability to receive" parameter n=0 DCE will not receive message or poll a remote device.
Fax Operation 65 Command Value Description and reported using the +FVO response. +FIP Initialize facsimile parameters to factory default. +FIS= vr,br,wd ,ln,df,ec,bf,st Current session parameter . refer to +FDCC Class 2 command in previous section parameter settings.
66 Fax Operation Command Value Description (+FCS parameter is still loaded) tpr=1 Transmitter Parameters are reported. +FCS: response reports are generated. idr=0 ID Strings are not reported. +FTI: +FCI: and +FPI: response reports are suppressed. idr=1 ID Strings are reported.
Fax Operation 67 Command Value Description 0-64 (HEX value) with negotiated number of pixels) required for a page considered acceptable. The percentage of good lines would be computed by the equation: 100 x (<lc> - <bl>) / <lc> lc: total line count as reported in the +FPS: response.
68 Fax Operation Response Value Function and Description procedure interrupt requested. ppm=4 Another document next, procedure interrupt requested. ppm=5 No more documents or pages, procedure interrupt requested. +FHS:<hsc> Call termination status: hsc= 0-0F Call placement and termination.
Fax Operation 69 Response Value Function and Description +FNS: "NSS FIF string" Report NSS (non-standard Setup) frame. +FPI: "CIG ID string" Report remote ID response-Polling Station ID (CIG). +FPO Remote polling indication. +FPS:ppr,lc,b lc,cblc,lbc .
70 Fax Operation Extended Fax AT Command Set Extended Fax AT Commands are unique to ZyXEL modems. The computer controls the modem through a set of extended fax AT commands and the modem responds with a set of status report result codes. During data state, compressed fax image data is flowing between the modem and computer.
Fax Operation 71 Command Function modem will wait for DC2 at the beginning of every page. The DTE software should detect the page separator RTC and then sends the DC2 to receive the next page of fax data. This mode is used with a BBS receiving faxes. #B2 This mode is for the polling feature of the modem.
72 Fax Operation Command Function #C2 Set minimum scan line time capability of the receiver: 10 ms at 3.85 line/mm, T(7.7)=T(3.85). #C3 Set minimum scan line time capability of the receiver: 20 ms at 3.85 line/mm, T(7.7)=1/2 T(3.85). #C4 Set minimum scan line time capability of the receiver: 40 ms at 3.
Fax Operation 73 CONNECT FAX See below. When a fax connection is successfully established, the modem returns this message: CONNECT FAX/SnnnnVnTnRnLnCnP<string> This message includes the connecti.
74 Fax Operation 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, your modem always uses hardware (CTS /RTS ) flow control.
Fax Operation 75 Fax Reception from a BBS Your modem can automatically detect data and fax calls and allow BBS software to receive faxes on the same phone line. To allow your BBS to receive incoming faxes, make the following set-up changes in your BBS: 1.
76 Fax Operation String Error Level 1 ZyXEL 100 2 3 The following is a sample setting in the BINKLEY.CFG file for a Binkley system. Init AT&FX7S0=1#B1+FCLASS=6 ExtrnMail ZyXEL errorlevel.
AT Command Set Summaries 77 8 AT Command Set Summaries Basic AT Command Set Command Options Function & Description Ref. A/ Re-execute the last command once. A> Re-execute the last command once or repeat the last call up to 9 times. (See also S8) <any key> Terminate current connection attempt when enter in handshaking state.
78 AT Command Set Summaries Command Options Function & Description Ref. , Pause for a time specified in S8. Remaining digits will be dialed as in- band DTMF. ; Return to command state after dialing. ! Hook flash. @ Wait for a 5 second silence before proceeding.
AT Command Set Summaries 79 Command Options Function & Description Ref. I12 Display physical layer status. L n n=0-7 4 * Speaker volume control. The higher the value, the higher the volume. S24.4-6 M n Speaker control. S21.1-2 M0 Speaker always OFF.
80 AT Command Set Summaries Command Options Function & Description Ref. V n Sets display type for Result Codes. S23.6 V0 Display result code in numeric form. (See also S35.7 and the result code table of 'ATXn') V1 * Display result code in verbose form.
AT Command Set Summaries 81 Max Outstanding 8 Max Block Size 256 Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Errors 0 Round Trip Delay 10 Xmitter Underrun.
82 AT Command Set Summaries Output Parameter Output Value Description Chars Received Number of characters modem has sent to DTE . Octets Sent Number of data bytes sent to remote modem Octets Received Number of data bytes received from remote modem. Blocks Sent Number of data blocks sent to remote modem.
AT Command Set Summaries 83 Output Parameter Output Value Description Carrier Lost On-Line (Not disconnected) Resent Expiration Protocol Error Break Time-out DTR Dropped Carrier Lost 1 (No handshaking response) Security check ATH command D/V hang up. Carrier Lost 2 (Remote hang-up, busy tone) Keyboard Abort Inactivity.
84 AT Command Set Summaries Command Options Function & Description Ref. &D3 Same as &D2 but DTR OFF causes the modem to hang up and reset from profile 0. &F Load factory settings to RAM as active configuration. &Gn Guard tone options.
AT Command Set Summaries 85 Command Options Function & Description Ref. buffering. &M1 Asynchronous command, synchronous data. &M2 Direct asynchronous mode , no data buffering. &M3 Synchronous mode. &Nn Modem link mode options (DCE/DCE).
86 AT Command Set Summaries Command Options Function & Description Ref. &N11 V.26bis 2400 (models with 4-wire leased line s 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.
AT Command Set Summaries 87 Command Options Function & Description Ref. &N66 V.34 19200 &N67 V.34 16800 &N68 V.34 14400 &N69 V.34 12000 &N70 V.34 9600 &N71 V.34 7200 &N72 V.34 4800 &N73 V.34 2400 &Pn Pulse dial make/break ratio.
88 AT Command Set Summaries Command Options Function & Description Ref. &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. (ALB+ST).
AT Command Set Summaries 89 Command Options Function & Description Ref. &Y2 Nondestructive, unexpedited. &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.
90 AT Command Set Summaries Command Options Function & Description Ref. *Fn Remote configuration enable. S36.0 *F0 * Deny remote configuration. *F1 Accept remote configuration (Remote Digital Loop-back must be granted, &T4). *Gn Security function selection.
AT Command Set Summaries 91 Command Options Function & Description Ref. *M1 Set to Answer mode. *Pn n=0-15 *P11 * Set leased line transmission power level; ranges from 0 dBm to -15 dBm (default: -11 dBm) (see also S35.3). S17.1-4 *Qn Action taken when line quality changes.
92 Status Registers & Result Codes 9 Status Registers & Result Codes S-Register Descriptions In most bit-mapped S-register s, 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 +.
Status Registers & Result Codes 93 Command Function & Description +Ref. “W” dial modifier to wait for the dial tone. (See also S41b4) S7= Set duration, in number of seconds modem waits for a carrier. +060 S8= Set duration, in seconds, for pause (,) option in Dial command and pause between command re-executions for Repeat (>) command.
94 Status Registers & Result Codes Command bit dec hex Function and description Ref. back test request. 22 Deny Remote Digital Loop- back test. &T5 3,2 00 Dial-up line (Default). &L0 44 2-wire leased line . &L1 88 4-wire leased line . &L2 5,4 00 Internal clock (Default).
Status Registers & Result Codes 95 Command bit dec hex Function and description Ref. 96 60 Profile 3 as active settings after power on. Z3 128 80 * Factory default as active settings after power on Z4 S16= dec hex Test status register. +000 00 No test in progress.
96 Status Registers & Result Codes Command bit dec hex Function and description Ref. 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).
Status Registers & Result Codes 97 Command bit dec hex Function and description Ref. 25 19 62400 bps 26 1A 41600 bps 27 1B 31200 bps 28 1C 24960 bps 29 1D 20800 bps 46 2E 921600 bps Note: Only the speeds up to S20=15 are supported by auto speed detection.
98 Status Registers & Result Codes Command bit dec hex Function and description Ref. 32 20 Ignore RTS (CTS always ON) in synchronous mode . (Default). &D2 6-7 00 Assume DTR always On. &D0 64 40 108.1, DTR OFF-ON transition causes dial of the default number.
Status Registers & Result Codes 99 Command bit dec hex Function and description Ref. 48 30 ATX6, error control result code enabled. X6 56 38 ATX7, error control result code enabled. X7 600 Display result code in numeric format (see S35.7) V0 64 40 Display result code in verbose format.
100 Status Registers & Result Codes Command bit dec hex Function and description Ref. 00 No error control. &K0 11 MNP4 + MNP3 (see also S41.0) &K1 22 MNP4 + MNP5 (see also S38.5, S41.0) &K2 33 V.42+MNP4 &K3 44 V.42 + V.42bis (compatible with &K2) &K4 3-5 00 Flow control disabled.
Status Registers & Result Codes 101 Command bit dec hex Function and description Ref. bps communication. S29= 0-49 0-31 Set default dial phone number pointer, use AT&Zn=s to store phone numbers. +000 *D S31= 0- 255 0-FF Holds the ASCII decimal value of the XON.
102 Status Registers & Result Codes Command bit dec hex Function and description Ref. password will be requested. This bit in profile 0 also protects the supervisory password from a hardware reset. 7 128 80 Enable extended numerical result codes from 50-71 when an error corrected connection is made.
Status Registers & Result Codes 103 Command bit dec hex Function and description Ref. 128 80 Enable type 2 security with password check and call- back. *G4 160 A0 Enable type 2 security with password check and call- back, remote site enters the call-back number.
104 Status Registers & Result Codes Command bit dec hex Function and description Ref. +FCON at current DTE , shift to 19,200 when entering into the next phase. S40= bit dec hex Bit mapped register. +000 122 No result code displayed in answer mode.
Status Registers & Result Codes 105 Command bit dec hex Function and description Ref. 7 128 80 Ignore calling tone, not to be used as fax detection. S42= bit dec hex Bit mapped register. +000 122 Enables throughput averaging. 244 CND message will be forced on even if AT02 is set.
106 Status Registers & Result Codes Command bit dec hex Function and description Ref. between 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.
Status Registers & Result Codes 107 Command bit dec hex Function and description Ref. (discontinuous) ring-back detection. S45= dec 0- 255 hex 0-FF Delay during which the CND silence detection is disabled, in 20 ms units. (See also S46) +087 S46= dec hex CND silence detection interval.
108 Status Registers & Result Codes Command bit dec hex Function and description Ref. 4 16 10 (Work with &D1 command) DTR ON will have the modem dial the default number and DTR OFF will have the modem hang-up and reset to profile 0. When the modem is idle (waiting for command), it will not dial any number when DTR changes from ON to OFF.
Status Registers & Result Codes 109 Command bit dec hex Function and description Ref. 11 Reports RING twice. 22 Reports RING four times. 33 Reports RING six times. 3-2 00 Disables DTMF tone. 44 Reports RING for a DTMF tone. 88 Reports RING ‘DTMF’ for a DTMF tone.
110 Status Registers & Result Codes Command bit dec hex Function and description Ref. signal of the V.23 handshaking sequence (Default). 128 80 Select ‘Space’ as the first signal of the V.23 handshaking sequence. &N12 S56= dec hex +050 0- 255 0-FF Hook flash detect time, in units of 10ms, country specific.
Status Registers & Result Codes 111 hex Equivalent Hexadecimal value. +nnn Factory default when listed in 'Reference' column. Note: 'AT' is omitted when an AT command is referred to in the 'Reference' column.
112 Status Registers & Result Codes ATV0 ATV1 X0 X1 X2 X3 X4 X5 X6 X7 20 CONNECT 57600 % % % % @ 21 CONNECT 76800 % % % % @ 22 CONNECT 115200 % % % % @ 23 CONNECT 230400 % % % % @ 24 CONNECT 46080.
Status Registers & Result Codes 113 DCE_Speed/Error_Control † Example: CONNECT 38400/V.32bis 14400/V.42bis $ <cr><lf>CONNECT DCE_Speed[/Error_Code]<cr><lf> Example: CONNECT 14400/ARQ # CONNECT DCE _Speed/Error_Code/Error_Control † Example: CONNECT 14400/ARQ/ MNP5 † Data compression included.
114 Status Registers & Result Codes Numerical V0 Verbose V1 Numerical V0 Verbose V1 53 CONNECT 4800 61 CONNECT 24000 54 CONNECT 7200 62 CONNECT 26400 55 CONNECT 9600 63 CONNECT 28800 56 CONNECT 12.
Status Registers & Result Codes 115.
116 Diagnostics & Troubleshooting 10 Diagnostics & Tr oubleshooting Diagnostics The U-336R/RE is equipped with several diagnostic capabilities: • Power-on Self Test • Analog Loop-back Test.
Diagnostics & Troubleshooting 117 O O N OTE : * ITEMS APPLICABLE EXCLUSIVELY TO U-336R INSTALLED IN RS-1612 RACK SYSTEM . Power-On Self Test At each power-up or upon a reset command from the panel.
118 Diagnostics & Troubleshooting 8 FR CALIBRATION FAIL.... Analog circuit calibration error. Loopback Tests The Analog Loopback Test, Local Digital Loopback Test, Remote Digital Loopback Test can all be initiated with AT commands from the terminal.
Diagnostics & Troubleshooting 119 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.
120 Diagnostics & Troubleshooting Dialing Indicator The V34 LED will flash on and off for 1/2 second intervals to indicate that the modem is dialing.
Diagnostics & Troubleshooting 121 Received Signal Power Level (RX) This reading is expressed in 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.
122 Diagnostics & Troubleshooting FRN (Fast Rate Negotiation) Granted (FG) The count of the granting of the remote modem's change rate (FRN) requests. Each request is an indicator of a changed receiving condition. FRN Request (FR) The count of the local modem's requests to change the rate.
Diagnostics & Troubleshooting 123 Retrain Requested 0 Link Duration 1 Retrain Granted 0 T401 Timeouts 0 T402 Timeouts 0 FCS Errors 0 Round Trip Delay 10 Xmitter Underrun 0 Receiver Overrun 0 Last .
124 Diagnostics & Troubleshooting Chars Received Characters received by the modem from the line and sent to the DTE . Octets Sent Data bytes sent to the remote modem. Octets Received Data bytes received from the remote modem. Blocks Sent Blocks sent to the remote modem.
Diagnostics & Troubleshooting 125 T401 Timeouts and T402 Timeouts These are for the manufacturer checking link layer operation. T401 and T402 are timers used in MNP4 or V.42. T402 will count when the modem is connected in the idle state with no data to transmit or receive.
126 Diagnostics & Troubleshooting • Resent Expiration • Protocol Error • Break Timeout • DTR Dropped • Carrier Lost 1 (No handshaking response) • Carrier Lost 2 (Remote hang-up, busy tone heard) Trouble Shooting Your modem is designed to provide years of ultra high speed satisfaction.
Diagnostics & Troubleshooting 127 Problem Your modem fails to execute AT commands . Solutions 1. Make sure the DTR LED is ON. If it is OFF, make sure 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.
128 Diagnostics & Troubleshooting Problem You receive the ERROR result code after typing an AT command. Solution You may have typed a command that is not recognized by your modem or communications software . Command Echo Problems Problem You do not see any typed characters on your computer screen.
Diagnostics & Troubleshooting 129 2. Your modem may not be set up for auto-answer. With the modem in command state, type ATS0=1 and press Enter to have the modem answer on the first incoming ring. To auto- answer after a specific number of rings, replace 1 with a value up to 255.
130 Diagnostics & Troubleshooting 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.
Upgrading Your Modem 131 11 Upgrading Y our 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 instructions. 2. Turn on your computer. 3. Turn on your modem.
132 Upgrading Your Modem 10. When the installation is complete, the modem restarts automatically. Kernel Recovery Mode Your modem is equipped with ZyXEL ’ s exclusive Kernel Recovery Mode . This unique feature enables quick recovery from failed flash uploads.
Terminal Pinouts 133 12 Terminal Pinouts Terminal Blocks Each terminal block has eight terminal pins for connecting phone lines to the corresponding modem in the rack.
134 Terminal Pinouts PC Serial Port Pinouts Signa l Pin ITU-T SS Signal Name EIA Signal Name Pin/Signal Description Direction DTE - DCE 1 101 AA Protective Ground (GND). 2 103 BA Transmitted Data(TXD). → 3 104 BB Received Data(RXD). ← 4 105 CA Request To Send (RTS ).
Terminal Pinouts 135 Signa l Pin ITU-T SS Signal Name EIA Signal Name Pin/Signal Description Direction DTE - DCE Loop Test. 22 125 CE Ring Indicator(RI).
136 Terminal Pinouts.
Index 137 13 Index 16450 UART, 25 16550 UART, 5, 25, 26 2-wire leased line, 2, 4, 35, 95 4-wire leased line, 2, 4, 35, 85, 86, 95 Amiga, 1 Analog loopback, 3 Asynchronous mode, 2 AT commands, 3, 15, 1.
138 Index Remote digital loopback, 3, 31, 43, 120 ROM code checksum, 118 RS-1612, 9, 10 RS-232, iv, 5, 11, 53, 55, 109, 119, 120, 137 RTS, 3, 8, 31, 60, 63, 65, 70, 74, 75, 84, 87, 99, 100, 101, 131, .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il ZyXEL Communications U-336R/RE è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del ZyXEL Communications U-336R/RE - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso ZyXEL Communications U-336R/RE imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul ZyXEL Communications U-336R/RE ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il ZyXEL Communications U-336R/RE, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del ZyXEL Communications U-336R/RE.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il ZyXEL Communications U-336R/RE. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo ZyXEL Communications U-336R/RE insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
