Raymar 326X V.32bis Series User Manual Download

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0049-1800-XXX 326X V.34, V.34-SDC AND V.32bis SERIES MODEM – USER’S GUIDE 02/23/2010
Rev. A

326X

V.34, V.34-SDC and V.32bis

Series Modem

User’s Guide

Summary of Contents for 326X V.32bis Series

Page 1: ...0049 1800 XXX 326X V 34 V 34 SDC AND V 32bis SERIES MODEM USER S GUIDE 02 23 2010 Rev A 326X V 34 V 34 SDC and V 32bis Series Modem User s Guide ...

Page 2: ...0049 1800 XXX 326X V 34 V 34 SDC AND V 32bis SERIES MODEM USER S GUIDE 02 23 2010 Rev A Page i Raymar Information Technology Inc 7325 Roseville Road Sacramento CA 95842 800 695 1951 Fax 916 783 1952 ...

Page 3: ...o change without notice and does not represent a commitment on the part of Raymar Telenetics Raymar Telenetics assumes no responsibility for any inaccuracies that may be contained in this User s Guide Raymar Telenetics makes no commitment to update or keep current the information in this User s Guide and reserves the right to make changes to this User s Guide and or product without notice No part ...

Page 4: ...se by any U S Government entity other than the Department of Defense the following notice applies Notice Notwithstanding any other lease or license agreement that may pertain to or accompany the delivery of this computer software the rights of the Government regarding its use reproduction and disclosure are as set forth in FAR 52 227 19 C Unpublished rights reserved under the copyright laws of the...

Page 5: ...e measures Changes or modifications not expressly approved by Raymar Telenetics could void the user s authority to operate the equipment This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations This is a Class A product Operation of this equipment in a residential environment may cause radio interference in which case the user may be required...

Page 6: ... Adaptive Rate System 16 Troubleshooting V 54 and V 22bis Tests 16 Country Specific Information 16 NET Compliance 16 CHAPTER TWO Installing the Modem 17 Introduction 17 Unpacking the Modem 18 Additional Equipment Required 19 Choosing a Site 19 Connecting the Modem 20 Rear Panel Connectors 20 Ferrite Cylinders 22 Cabling the Modem 26 Connecting the Modem to an NMS 28 Turning on the Modem 30 Automat...

Page 7: ...peration 46 Reinitializing Memory from the Front Panel 46 Reinitializing Memory Using the AT F Command 46 Configuration Option Sets 46 What is an Option Set 46 Configuring an Option Set 51 Option Set Defaults 52 326X V 32bis and 326XFAST Modem Application Examples 58 Option Set 1 59 Option Set 2 60 Option Set 3 60 Option Set 4 61 Option Set 4 62 326XFAST SDC Modem Application Examples 62 SDC Pre O...

Page 8: ...5 S Registers 77 CHAPTER SIX Troubleshooting Guide 89 Introduction 89 Troubleshooting 89 326X Series Modem Diagnostic Tests 97 Synchronous Data Compression SDC Testing 98 APPENDIX A Configuration Quick Reference 99 APPENDIX B Cabling and Interface Pinouts 143 APPENDIX C Country Specific Information 153 RAYMAR TELENETICS LIMITED WARRANTY 196 RMA PROCEDURE 197 GLOSSARY 198 ...

Page 9: ...ise 326X Series Modem Family The 326X product family consists of three series V 34 V 34 SDC and V 32bis This Series Supports This Modulation This Maximum DCE Rate And This Maximum DTE Rate 326X FAST V 34 ITU V 34 33 6 kbps 128 kbps asynchronous 326X FAST SDC ITU V 34 33 6 kbps 128 kbps asynchronous and with proprietary compression 128 kbps synchronous 326X ITU V 32bis 14 4 kbps 57 6 kbps asynchron...

Page 10: ...ard models equivalent to 3260 and 3265 respectively for Modular Nest enclosure installation 3263 3268 Rack mount single modem card models equivalent to the 3266 for Modular Next enclosure installation Documentation Target Audience The documentation set assumes that you are familiar with the basic concepts of data communications that you are an operator only and that you will not be servicing the m...

Page 11: ...n set for further information Chapter 4 Configuring the Modem explains how to effectively configure the modem The four preconfigured option sets are described along with sample applications that help you choose an option set Chapter 5 Using the AT Automatic Calling Interface discusses the 326X Series Modem s AT ACU This chapter introduces The ACU industry standard AT and AT commands The Raymar Tel...

Page 12: ...s representative for ordering information References Refer to the following for more information 326X 326XFAST and 326XFAST SDC Series Modem Product Specification Sheets EIA Application Note 562 Appendix A defines cable lengths in terms of DTE rates NetView operators should be familiar with NetView Operations Primer IBM Part No SC30 3363 NetView Operations Scenarios IBM Part No SC30 3376 Trademark...

Page 13: ...ws CR It designates the Return or Enter key It is used to complete a text entry or initiate an action from the keyboard Special Notices These notices emphasize certain information in the manual Each serves a special purpose and is displayed in the format shown IMPORTANT Important is used to emphasize any significant procedural information Caution Caution provides information that if not followed c...

Page 14: ...uire par des dommages pour le logiciel le matériel ou les données Avertissement Un avertissement constitue le message le plus sérieux indiquant que vous pouvez subir des blessures corporelles Besondere Hinweise Durch die folgenden Hinweise werden bestimmte Informationen in diesem Handbuch hervorgehoben Jeder Hinweis dient einem bestimmten Zweck und wird im dargestellten Format angezeigt WICHTIG Wi...

Page 15: ...e un propόsito especial y aparecen con el formato siguiente IMPORTANTE Importante se utilize para enfatizar cualquier informaciόn de procedimiento importante Precaucion La precauciόn le ofrece información que de no cumplirse puede derivar en posibles daños tanto para el software y el hardware como para ambos Advertencia Una advertencia es un aviso importante que le advierte sobre la presencia de u...

Page 16: ...Display from Modulation Mode 9600 T D press to display the operating status Example DTE 19 2 RELIABL Press until Display Modem ID displays Press SWPart x displays The rightmost two digits show the revision level Option Settings Up to date configuration worksheet see the 326X Series Modem Reference Guide Site ID Assigned to the customer site by Raymar Telenetics at first service call Customer shoul...

Page 17: ...mmunication over 2 wire dial lines and 2 wire or 4 wire leased lines depending on the model Dial lines are public lines to which all telephone users have access leased lines also called private lines provide a dedicated connection over lines provided by the telephone company Whether you use dial or leased lines you can operate the modem as follows Using the front panel control keys and liquid crys...

Page 18: ... no electronic components that can be serviced or replaced by a user Any attempt at user service of the 326X enclosure or opening of the 326X unit voids the product warranty Avertissement N essayez pas de réparer le modem ou le boîtier Ils ne contiennent aucun composant électronique pouvant êtreréparé ou remplacé par un usager Toute tentative de réparation du boîtier du 326X par un usager ou toute...

Page 19: ...nts conçus pour des ordinateurs et du matériel électronique Dans les zones susceptibles d être frappées par la foudre prenez des précautions pour éviter que le matériel électronique soit endommagé Contactez votre compagnie téléphonique ou un vendeur d accessoires électroniques pour obtenir des renseignements concernant les systémes de protection contre la foudre Certains usagers confrontés à des p...

Page 20: ... three automatic calling interfaces also known as Auto Call Units ACUs let you execute functions from a keyboard AT ACU The asynchronous AT ACU is compatible with the industry standard AT command set AT Commands provide a standard modem communications interface allowing you to configure and operate your modem from a terminal or PC keyboard Using the AT compatible command set AT and AT you can for ...

Page 21: ...nfigure monitor and control local and remote modem operation An NMS continuously polls modems to collect management information and check status Network management traffic including alarms commands events and polling is transported to remote modems on an in band channel that does not disrupt user data traffic nor consume user bandwidth The modem supports a daisy chain network management interface ...

Page 22: ...erating in V 34 Auto modulation mode are compatible with modems that do not support the V 34 modulation mode by automatically negotiating the highest common modulation mode e g V 32bis V 90 Compatibility Release 8 1 software enables 326X modems to operate with V 90 modems in dial up connections With this software 326X modems can communicate with V 90 modems and negotiate V 34 rates The release doe...

Page 23: ...modems automatically determine whether to use Microcom Networking Protocol MNP Level 4 or Link Access Procedure for Modems LAPM for error correction Depending on the scheme negotiated the modem uses MNP Level 5 or V 42bis data compression The SDC modem uses LAPM with Raymar Telenetics proprietary data compression technology SECURITY The modem provides access security at two levels Front panel Mode...

Page 24: ...S The modem supports a full range of ITU TS V 54 and V 22bis compatible tests to help isolate and correct problems Refer to Chapter 6 for typical problems and ways to correct them Chapter 6 also lists the supported diagnostic tests and instructions for initiating and terminating tests using either the front panel control keys or AT commands For details on tests refer to Chapter 4 of the 326X Serie...

Page 25: ...te cylinders if necessary Connect the modem to a Network Management System NMS if appropriate Turn on the modem and run the unit s automatic self test IMPORTANT Telephone company and governmental regulations vary by country Your modem s rear panel layout and cabling may vary from that shown in this guide Refer to Appendix C for a description of the modem rear panel and cabling important safety gui...

Page 26: ...mar Telenetics supplies the items shown in Figure 2 1 with the modem Note CD ROM with User Guide and relevant documentation is not shown Figure 2 1 Unpacking the Modem If the equipment is damaged contact the shipper If you have further concerns about damaged or missing parts contact your Raymar Telenetics representative Raymar Information Technology Inc 916 783 1951 7325 Roseville Road 800 747 152...

Page 27: ...t have a 25 pin D male connector and a DTE connector For the modem to modem or other DCE DCE connection use a crossover cable The cable must support the modem signaling your application requires Select a cable based on your computer and the DTE pin assignments in Appendix B CHOOSING A SITE Where you place the modem can affect its operation To enhance performance Install the modem in a clean well l...

Page 28: ...perating functions When the modem is shipped from the factory all switches are in the Off up position DIP switch selections cannot be overridden by remote front panel configuration Refer to Appendix C for DIP switch function details Network Control NC IN and OUT ports for connecting to Network Management Systems NMS A DTE port for connecting to a PC or DTE An AC power receptacle to accept an AC li...

Page 29: ...erent interface you will need an external converter cable 326X Series Modems have an EIA TIA 232 EIA TIA 562 electrical interface for connection to external equipment For compatibility with DTEs that have a V 35 interface the V 34 SDC Modem is also available with the optional ITU TS V 35 Recommendation electrical interface The rear panel DTE port is configured at the factory for either interface B...

Page 30: ...326X models in some countries as described in this section Caution Install cables with the ferrite end adjacent to the modem The ferrite cylinder ensures that the unit operates in compliance with FCC RFI requirements Models 3261 and 3266 Dial Line Connections Two telephone cables with ferrite cylinders are included in the Model 3261 U S A and the 3266 Canada Germany U K and Japan accessory kit Con...

Page 31: ...ded with each cable that requires one Follow the instructions below to ensure correct cylinder installation Installing a Ferrite Cylinder on an Audio or Network Management Cable Do the following for each cable 1 Snugly wrap the cable twice completely around the cylinder Figure 2 5 2 Set the cable into the cylinder cutouts 3 Ensure that 1 to 1 1 2 inches of the cable protrude from the cylinder on t...

Page 32: ...e connector with the ferrite cylinder close to the backplane connector Installing a Ferrite Cylinder on a Power Cable Do the following for each power cable of a Modular Nest enclosure populated with 3267 and 3268 V 34 Modems 1 Snugly wrap the cable once completely around the cylinder Figure 2 6 2 Set the cable into the cylinder cutouts 3 Ensure that 1 to 1 1 2 inches of the cable protrude from the...

Page 33: ...ünden darf die Klappe auf der Vorderseite nur zum Installieren Entfernen oder Konfigurieren von Produktkarten entriegelt und geöffnet werden Avertencia Por razones de seguridad la puerta frontal deberá permanecer cerrada en todo momento a menos que se proceda a la instalaciόn extracciόn o configuraciόn de las tarjetas del producto Important Information about the Modular Nest Enclosure This notice ...

Page 34: ...ne if appropriate 5 The power cord 6 Network management system cables if appropriate For models 3260 3265 connect modem cables in the order shown in Figure 2 7 For models 3261 3266 connect modem cables in the order shown in Figure 2 8 Warning The modem must be grounded through its electrical plug If you cannot use the safety plug with your electrical outlet consult a licensed electrician to ensure...

Page 35: ... Modem wird normalerweise über den Stecker geerdet Wenn Sie den Schuko Stecker nicht an die Steckdoes anschließen können wenden Sie sich an einen zugelassenen Elektriker um sicherzustellen daß das Gerät korrekt geerdet ist Trennen Sie das Gerät vor dem Öffnen des Gehäuses vom Netz Figure 2 7 3260 3265 Modem Cabling ...

Page 36: ...05 Figure 2 8 3261 3266 Modem Cabling Connecting the Modem to a Network Management System 326X Series Modems can be connected to the following Raymar Telenetics systems 9110 NMS Figure 2 9 9000 PC Figure 2 10 9000 UX Figure 2 10 Use the modem s NC IN and NC OUT 8 pin DIN connectors for NMS connections ...

Page 37: ...0049 1800 xxx 326X V 34 V 34 SDC and V 32bis Series Modem USER S GUIDE 02 23 2010 Rev A Page 29 of 205 To connect multiple modems in a daisy chain configuration refer to Figure 2 11 ...

Page 38: ... with the modem backplane Turning on the Modem The power cable connects the rear of the modem to a standard 115V outlet After making other connections plug the power cable into the modem and then plug it into an outlet Turn the rear panel power switch to the On up position When powered on the modem automatically performs a self test of internal circuits The Automatic Self Test section next describ...

Page 39: ...the self test The modem is ready for operation Error message A system fault was detected during the self test Handling Error Messages If the modem fails the self test and displays an error message do the following 1 Record the message to assist in troubleshooting the modem 2 Turn the modem off and then on again and observe the front panel display If the modem displays 326X READY the earlier error ...

Page 40: ...7 software CONFIGURING AND OPERATING THE MODEM You can configure and operate the modem in several ways From the modem front panel From a Network Management System NMS From the modem AT Automatic Calling Unit ACU if it is attached to an asynchronous dumb terminal a terminal without software or to a PC running an asynchronous communications software package Each of these is described in the sections...

Page 41: ...front panel keys the modem must be connected to an AC power source the rear panel power switch must be turned on and rear panel DIP Switches 3 and 6 must be set to the Off up position See Chapter 2 for details Figure 3 1 Standalone 3260 Modem with Front Cover Closed Figure 3 2 Standalone 3260 Modem with Front Cover Open Figure 3 3 3260 Modem Enclosure Card Front Panel LEDs show the status of key D...

Page 42: ...Remote Control Network Control Flashes to indicate that the modem is under remote configuration via front panel or AT ACU A B A or B Enclosure cards only On when modem A front panel information is displayed Off when modem B front panel information is displayed To toggle between modem A and modem B front panels hold and then press ALM Alarm Enclosure cards only On when a test is in progress or a mo...

Page 43: ...isplay If options can be set the following indicators display An equals sign indicates the currently selected option of the parameter A colon indicates that the displayed option is available but is not selected Each parameter has a default option Some defaults are determined by the assigned factory preset option sets preconfigured option sets These defaults are exclusive to an option set Other fac...

Page 44: ...until you stop pressing 2 With the 3262 3267 Modems to toggle between modem A and modem B front panels hold while pressing Keys Function Down Enter Steps through categories example Data 9600 T D TEST OPTS MODULATION OPT S or at a parameter within a category scrolls through the options Selects an option and or initiates an action This key also serves as a Talk Data softkey allowing you to toggle be...

Page 45: ...tatus Displays The DTE19 2RELIABL and Phase Jitter subcategories let you view modem operating status Example in the DTE 19 2RELIABL subcategory pressing displays Operating status messages DTE DCE rate status Error correction data compression status EIA TIA signal status Disconnect reasons The modem s software revision level Circuit Quality Monitoring System CQMS parameter status For details refer ...

Page 46: ...ACU is compatible with The industry standard AT command set AT and AT commands The Raymar Telenetics enhanced AT command set AT commands AT commands define how the modem is configured how it makes calls and what test operations it performs The AT command set lets you configure and operate modem options and features from the PC or asynchronous terminal keyboard Using the Modem with an Async Termina...

Page 47: ...offer a Hayes Compatible selection do not support Raymar Telenetics enhanced commands AT In this case you may enter AT commands yourself if required by your application Where Do I Go from Here If your communications software package supports a 3260 Modem or a comparable 3260 selection refer to Chapter 4 the Communications Software Package Operating Notes section Chapter 4 Configuration Option Sets...

Page 48: ...e DTR transitions from DTE to establish calls Manual mode lets you manually initiate and answer calls with a telephone and then transfer the call to the modem Where Do I Go from Here For more information on the V 25bis ACU refer to Chapter 3 Automatic Calling Interfaces in the 326X Series Modem Reference Guide Programmers and System Developers should also refer to Chapter 3 for a programming guide...

Page 49: ...S 400 refer to Chapter 4 for configuration instructions Chapter 3 Automatic Calling Interfaces in the 326X Series Modem Reference Guide for details on bit synchronous protocol frame formats and the V 25bis protocol External Auto Call Units The modem can be used with applications that support external dialers such as the Bell 801C Once an external dialer establishes a call it passes control of the ...

Page 50: ...te for your application The following two sections provide examples of common 326X applications and tell you how to configure the modem for each application These sections will help you to configure the modem quickly If you are unfamiliar with the AT command set or the modem front panel refer to the section Remote Access Reset later in this chapter Once this is done you can use a remote modem to c...

Page 51: ...g Notes section next and to Chapter 6 Troubleshooting Guide Operating Notes Keep the following in mind when using the modem with communications software General Notes The information in this section applies to all 326X Series Modem platforms Selecting an Option Set Option Set 1 was designed for use with asynchronous communications software packages It is compatible with most communications softwar...

Page 52: ...AT MX to the higher rate and disable the adaptive rate feature before placing or answering calls Ensure that the package s speed and the modem s connection rate match when the connection is established NOTE Some communications software packages support the automatic speed detect feature which automatically matches the modem s baud rate with the software package s baud rate Transferring a File Refe...

Page 53: ...the communications software package supports the higher terminal rates available with these modems and you want to use the package s auto dial or auto answer features set the modem s DTE Rate TERMINAL OPT S category to that of the package Some communications packages do not let you select the higher rates available with the 326XFAST V 34 modem while using the package s auto dial or auto answer fun...

Page 54: ... Press to reinitialize modem memory Reinitializing Memory Using the AT F Command You can also reinitialize memory by entering AT F CR from the terminal CONFIGURATION OPTION SETS This section discusses the modem s preconfigured option sets in three parts What is an Option Set How to Configure an Option Set Option Set Defaults 326X V 32bis 326XFAST V 34 and 326XFAST SDC What is an Option Set Option ...

Page 55: ...ync Calls to Central Site Using the AT ACU With Option Set 1 the modem communications over dial lines using an asynchronous data format This option set is appropriate for home or office use where you plan to dial for example into a central site computer minicomputer an electronic bulletin board or a personal computer When you first install the modem it is set to power up with Option Set 1 as the f...

Page 56: ...U The DTR option is set to 108 2 so that the V 25bis ACU can manipulate the DTR signal All other options in the ACU OPT s category are set for a typical synchronous DTE At the beginning of each connection the modem negotiates the highest common data rate with the remote modem The modem uses the adaptive rate feature in the V 34 V 32bis or V 32 modulation modes This ensures maximum throughput when ...

Page 57: ...s to the leased line If you operate your modems in leased line mode with Option Set 4 and one modem has software Revision 7 8 or 7 9 set the Fast Call parameter AT FC Modulation Opts Menu to Off in both modems Option Set Descriptions 326XFAST SDC Modems Option Set 1 Async Calls to Central Site Option Set 1 in the 326X SDC product functions the same as Option Set 1 above Option Set 2 Sync Dial A B ...

Page 58: ... All options in the ACU OPT S category are set for a typical synchronous DTE The modem uses the adaptive rate feature in the V 34 Auto modulation mode This ensures maximum throughput when line quality is poor Option Set 4 Sync Leased Line with Dial Restoral No ACU Models 3261 63 66 68 Option Set 4 uses the modem s leased line restoral feature With this option set the modem operates primarily on a ...

Page 59: ...lect an option set The modem displays SELECT OPTIONS n Using the ATZ Command 1 Read Preparing for Operation earlier in this chapter 2 Identify the option set for your application The default is Option Set 1 3 Type ATZ n CR where n 1 4 NOTE The modem disconnects from the line when the ATZ command is entered and any test in progress is immediately terminated Since any AT command following the ATZ co...

Page 60: ... to an equals sign The new option is temporarily saved and Max Rate 7200 displays 3 Step across the Status Option Sets Dialing menu by pressing until you see Save Changes n 4 Use the key to display the option set number where you want the changes saved and then press The modem displays Saving Options 5 After a few seconds the modifications are stored in the modem s nonvolatile memory and the modem...

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Page 66: ...ected to one of the following A Front End Processor FEP or host computer An X 25 host node Asynchronous router bridge Option Set 2 Cluster controller calling a host computer Option Set 3 Synchronous terminal calling a host computer Option Set 3 Router bridge calling another router bridge Option Set 3 X 25 node host computer calling another X 25 node host computer Option Set 3 The modem as an exter...

Page 67: ...h the parity set in the asynchronous DTE using the Parity option AT RP ACU OPTS category o Character Length Set the modem s character length Char Length ACU OPTS category to match the length set in the asynchronous DTE Refer to Appendix A for parameter and setting descriptions In Option Set 1 the default settings assume you will use the AT ACU to operate the modem for example the default for ACU S...

Page 68: ...l not automatically answer an incoming call Set DTR High AT D TERMINAL OPTS category Option Set 3 Sync Calls to Central Site V 25bis ACU Changing Default Configuration Settings Depending on application requirements you may need to change the following In Option Set 3 the default setting for network timing is Clock Internal AT X MODULATION OPTS It may be necessary to change the timing to external o...

Page 69: ...er Delay feature AT DB EC DC OPTS category when enabled allows buffered data in the communications link to be effectively transmitted to the other modem before the modems disconnect Enable this feature if your application does not ensure a complete transfer of data before the modems disconnect The default Answer option is country specific Refer to Appendix C to verify that this option is appropria...

Page 70: ...try specific Refer to Appendix C to verify that this option is appropriate for your application o Restoral RESTORAL OPTS Default option is Auto FP as described above Can be set to OFF to disable restoral o Clock MODULATION OPTS Default option is Internal Can be set to external or loopback depending on the network clocking source o DTE TERMINAL OPTS If No ACU Form Async customize your DTE port by s...

Page 71: ...ies Modem Reference Guide for a description of how to use the RX TX Throughput and Link Utilization displays Raymar Telenetics recommends the following to maximize efficiency If your application is operating in a windowed protocol environment set the window sizes to greater than 1 to improve performance Recall that windowing refers to the number of packets sent before an acknowledgement is require...

Page 72: ...DlyMin The default options assume the DTE can accept nondisruptive clock stoppage For DTEs that cannot handle Rx Tx clock stoppage without disrupting data select a different option In this situation Raymar Telenetics recommends that the default values not be used SDC Sample Applications SDC Option Set 1 Async Calls to Central Site Using AT ACU SDC Option Set 1 functions the same as described above...

Page 73: ...ded by the network defaults of 56 64 kbps Enable Option Set 2 in both the local and remote modems and ensure that Mode AT SM is set the same in both modems The SDC modem supports single channel environments only For example the SDC modem can restore Port 1 only of the 35XX device The 35XX device when initiating restoral must be set to Normal mode as the 35XX network management channel is virtually...

Page 74: ...fy the speed at which the modem communicates with the DTE using the DTE Rate AT DE option to use a value other than the default See the DTE Rate description in Appendix A With Option Set 3 the modem originates calls with its V 25bis ACU DTR is set to 108 1 so that an off to on DTR transition instructs the modem to connect to the telephone line If the modem detects an incoming call the call is conn...

Page 75: ...eak network access periods the router is configured to signal the SDC modem to establish a dial connection through the PSTN Users transparently bypass the digital link using the 326XFAST SDC PSTN link to continue data transmission As bandwidth demands subside the dial call is dropped and transmission resumes over the DDS link The SDC modem supports all industry standard ACUs AT V 25bis DTR dialing...

Page 76: ...lation mode This ensures maximum throughput when line quality deteriorates If restoral criteria are met the modem automatically reroutes data traffic through the PSTN At that time the modem attempts to run at its maximum rate over the dial line and falls back to lower speeds if required After an hour the modem returns to the leased line Select SDC Option Set 4 for this application Note the followi...

Page 77: ...press and simultaneously for three seconds Rmt Access Reset displays The modem resets itself to settings that let it answer a call and be accessed by an NMS or remote modem The modem may be dialed into and reconfigured Stored phone numbers and saved option sets remain unchanged When Remote Access Reset Is Disabled Remote access reset is not supported when the modem is attached to a network managem...

Page 78: ... immediate modem action and let you perform day to day operations such as dialing and storing numbers from your asynchronous DTE These AT commands do not cross reference to the modem front panel Raymar Telenetics Enhanced AT Command Set AT Using these Raymar Telenetics AT extensions you can also configure most modem options These AT commands called configuration AT commands control the same option...

Page 79: ...ry standard commands AT AT and the Raymar Telenetics enhanced commands AT Communications software packages that support a Hayes compatible selection do not support the Raymar Telenetics enhanced commands AT You can enter these commands yourself to modify option settings if required by your application Check the documentation included with your communications software package to determine whether y...

Page 80: ... which causes the modem to reset go off hook or enter a test state For example you might enter on a single command line This command disables Asynchronous Echo It configures the Result Code Format to Verbose and the Save Changes feature to Option Set 1 These options and settings are described fully in Appendix A Commands that are followed by a telephone number must be at the end of the line Howeve...

Page 81: ...a or A commands are issued the modem assumes parity to be the same as that of the previous command NOTE Autobaud does not operate when the modem is online in escape mode Autobauding works at the following DTE rates bps Table 5 2 summarizes the 10 bit total character formats for autobauding Autobauding is valid only with 10 bit character formats Result codes such as RING are sent at the last autoba...

Page 82: ... must precede and follow the sequence of escape characters to prevent the characters from inadvertently placing the modem into command mode if they are transmitted in a message If data is sent within the guard time the escape sequence is not detected The default guard time is one second The guard time specified by S Register 12 also specifies the maximum time between the three consecutive escape c...

Page 83: ...nt panel option A Re Execute Last Command This command re executes the last AT command string issued to the modem including redialing a telephone number To re execute the last command enter A but do not follow this command with CR The A command may be entered in either upper case or lower case characters However when entered in lower case characters the modem cannot use the autobaud feature to det...

Page 84: ...m to go off hook dial the number and execute all dial modifiers in the dial string The type of call progress message you see is controlled by the Call Progress ATX setting The modem can dial up to 50 characters including spaces In originate mode if the ATD command is issued without a phone number the modem goes off hook If ATD is issued while the modem is in escape mode or remote configuration the...

Page 85: ...If this command is issued while the modem is in a remote configuration session the modem responds with NOTE If the ATO command is issued after a semicolon dial modifier return to command state after dialing the modem trains as an originate modem AT RD Redial Last Number You may redial a failed call n times using the AT RD command The modem redials a call until a successful connection is made or un...

Page 86: ... Register Values This command displays the value of S Register n as stored in volatile memory If a appears in the command string anywhere other than immediately following the S Register number the command displays the value of the last S Register selected If you try to read the value of an unused S Register the modem displays OK Display S Register Value AT This command displays the contents of the...

Page 87: ... ATSn command x must be a number within the specified range for the S Register On power up S Register 0 is selected If you try to change the value of an unused S Register the modem displays OK S Register Descriptions This S Register specifies the ring on which the modem automatically answers a call When set to 0 automatic answering is disabled and calls must be answered manually This register has ...

Page 88: ...s S Register determines the decimal value of the carriage return character The default setting 13 translates to the ASCII CR carriage return character S Register 4 Line Feed Character This S Register determines the decimal value of the line feed character The default setting 10 translates to the ASCII LF line feed character S Register 5 Backspace Character The S Register determines the decimal val...

Page 89: ...for Data Carrier If Call Timeout AT TT is set to S7 the value of S Register 7 determines the number of seconds that the modem waits for a carrier signal from the remote modem after dialing or answering a call S Register 7 also affects the dial modifiers W w and Dial Modifier If Call Timeout AT TT is set to S7 the value of S Register 7 determines the length of time for which the dial modifier instr...

Page 90: ...ments data carrier must be lost before the modem hangs up NOTE This applies to V 22bis B212 V 21 and B103 operation only To use S Register 10 s setting the front panel DCD Loss Dis option AT CD must be set to S10 Also if S Register 10 is set to 255 the modem will not hang up because of a carrier loss Setting the AT CD DCD Loss Disconnect option under the TERMINAL OPT S menu to S10 enables the DCE ...

Page 91: ...gnize the escape command and enter command mode This prevents the characters from putting the modem in command mode if they are contained in data The value of S Register 12 is multiplied by 0 02 to determine the number of seconds For example the value of the factory default 50 is one second If S Register 12 is set to 0 the speed at which you enter the escape sequence is not a factor S Register 18 ...

Page 92: ...nds the modem waits after connecting before looking for DTR S Register 26 RTS CTS Delay This S Register selects the delay between CTS and RTS while the modem is online It operates in modes specified by the RTS AT RS and CTS AT CT commands The time is selectable in 1 100 second intervals from 0 to 2 55 seconds S Register 30 DTE Inactivity Disconnect If DTE Inactivity S30 AT SI the modem disconnects...

Page 93: ... to Buf or S38 or Buf S38 S Register 45 Access Security Tone Duration This S Register specifies the prompt tone duration when the ACCESS SECURITY option Tone Prompt Only or Prompt Ack AT ZP This delay is measured from the time that the prompt tone is generated by the answer modem to the time that the answer modem detects the first digit of the calling modem s password S Register 46 Access Security...

Page 94: ...0049 1800 xxx 326X V 34 V 34 SDC and V 32bis Series Modem USER S GUIDE 02 23 2010 Rev A Page 86 of 205 S Register 96 Signaling System 5 This S Register specifies whether Signaling System 5 is enabled ...

Page 95: ...0049 1800 xxx 326X V 34 V 34 SDC and V 32bis Series Modem USER S GUIDE 02 23 2010 Rev A Page 87 of 205 S Register 97 Break Signal Duration ...

Page 96: ...rating modes It enables and disables AC Tone Protect which is part of the modem s training sequence S Register 99 V 32 Training Time This S Register extends part of the V 32 modulation mode training time It provides a workaround to an inability of Rockwell based modems to establish a connection Raymar Telenetics recommends that with Rockwell based modems you set S 99 to 120 ...

Page 97: ... configurations The modem has been installed with all initial cabling complete TROUBLESHOOTING This section discusses Dial operation problems Synchronous data compression SDC mode problems Leased line operation problems The First Step First confirm that your data communications application is set up correctly Confirm that your communications software is configured for the correct serial port to wh...

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Page 105: ...rom a network management system The following table shows the AT commands to initiate and terminate tests The steps following the table describe how to initiate and terminate each test from the front panel Refer to your network management system documentation for instructions on initiating and terminating tests from the network management system IMPORTANT The tests described in this section cannot...

Page 106: ...ts are supported When initiating the following online tests o Remote digital loopback o Remote digital loopback pattern o Data mode pattern o Local digital loopback During SDC connection the modem falls back to Direct mode Mode Direct AT SM to run the test If the modem is set for internal timing Clock Internal AT X the DTE clock is changed to match the DTE rate If the modem is set for external tim...

Page 107: ...ce Card shows the menu tree as well Numeric entry information how to use the front panel control keys to change numeric values of configuration settings S Registers cross referenced to AT Commands and front panel options Dial modifiers Result codes numeric short form and word long form Instructions for configuring Dual In line Package DIP switches which let you override configuration settings norm...

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Page 142: ...1800 xxx 326X V 34 V 34 SDC and V 32bis Series Modem USER S GUIDE 02 23 2010 Rev A Page 134 of 205 Performing Numeric Entry The following options require you to enter information using the front panel or ACU ...

Page 143: ... GUIDE 02 23 2010 Rev A Page 135 of 205 S Register AT Command Cross Reference This section shows the modem s S Registers cross referenced with AT Commands and front panel options For details on S Registers refer to Chapter 5 Using the AT Automatic Calling Interface ...

Page 144: ...0 Rev A Page 136 of 205 Dial Modifiers for Special Dialing Requirements When entering telephone numbers into modem memory or dialing directly from the modem s front panel you can add dial modifiers to telephone numbers Table A 4 lists the dial modifiers used in AT ACU applications ...

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Page 146: ...umeric form is selected the modem issues only a number code The rate displayed in a CONNECT message depends on the Connect Message option ACU OPTS menu If Con Msg DTE Rate the DTE to modem rate is displayed If Con Msg DCE Rate the modem to modem rate is displayed If Speed Conversion Off AT SC0 or if the modem is operating in Direct or synchronous modes the CONNECT message speed reflects both the D...

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Page 149: ...s of the modem s operation The modem is shipped from the factory with all switches in the Off up position DIP switch selections cannot be overridden using the remote front panel configuration The switches are numbered from left to right 1 to 6 Table A 6 lists the switches and explains their function NOTE For information on the DIP switch on 3262 3263 3267 and 3268 Modem cards see the addendum 326X...

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Page 151: ...work control port interfaces 326X 326X SDC cabling requirements and diagnostics Audio connector DIAL LINE LEASE PRIVATE LINE and PHONE pinouts vary by country See Appendix C for your country s pinouts EIA TIA 232 D MODEM TO COMPUTER INTERFACE The modem s digital interface conforms to the EIA TIA 232 D standard and ITU V 24 ITU V 28 and ISO 2110 the modem should be connected to a data terminal with...

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Page 153: ...commendation supports connection to external equipment also operating with a V 35 electrical interface If your DTE does not have a V 35 interface do not under any circumstances connect the modem to a non V 35 device If you make such a connection you may seriously damage the modem Raymar Telenetics makes no guarantee of the equipment s integrity if you do not ensure that compatible interfaces are u...

Page 154: ...odem USER S GUIDE 02 23 2010 Rev A Page 146 of 205 ITU Rate V 35 Modem to Computer Interface Pinouts The modem s digital interface conforms to ITU Rate V 35 The modem should be connected to a data terminal with a compatible digital interface see Table B 1 ...

Page 155: ...Rev A Page 147 of 205 Differences EIA TIA 232 D and ITU Rate V 35 Interfaces There are some differences in how your modem operates when using EIA TIA 232 D and ITU Rate V 35 electrical interfaces These differences and settings to use when operating with V 35 interface are as follows ...

Page 156: ...ay connect to a Raymar Telenetics or Motorola network managed product Cabling This section provides important information about cabling and operating the modem at DTE rates greater than 19 2 kbps NOTE 326XFAST and 326XFAST SDC Series Modems are referred to as 326X Series Modems here Caution When operating the modem at DTE rates higher than 19 2 kbps carefully follow the information here to determi...

Page 157: ...ate Similarly the allowable lengths become shorter as DTE rates increase Since newer PCs support EIA 232 D type receivers drivers at higher rates you must use information in this section to determine cable length To determine the per foot capacitance of your cable 1 Determine the length of the cable you require for your application 2 Determine the range of rates that the modem will use For example...

Page 158: ...mplete cables but for the wires that are available with the correct capacitance to support the higher rates of the 326X Modem Table B 5 Raymar Telenetics DB 25 Low Capacitance Cables for 326X Description Raymar Telenetics Product Code Up to 19 2 kbps ft Up to 64 0 kbps ft Up to 96 0 kbps ft Up to 115 2 kbps ft Raymar Telenetics Male 25 Male 25 Straight through 92153 92152 92151 92150 50 30 10 6 Ra...

Page 159: ...teps before continuing with installation If you continue to experience problems with data transmission after choosing a cable running the diagnostics in this section the problem may be with your DTE or modem If the modem is not installed at a host site perform the following steps 1 Enable the AT ACU if not already enabled with async echo on reinitializing the modem will also enable the AT ACU with...

Page 160: ...bove to verify the cable at a remote site 3 Once the cable at the remote site has been verified initiate a dial connection with the host site 4 If there are no errors in data transmission the cable at the host site is most likely appropriate for the application 5 If the transmitted and received messages are different the cable at the host site is most likely incorrect for the application Verify th...

Page 161: ...em standalone rear panel views and the countries supporting each view Modem rear panel interface pinouts Cables shipped to each country along with pinouts Delayed Forbidden list operation in each country Country specific information that applies only to Canada Denmark Hong Kong the United Kingdom and the U S A Use the Universal International section if your country is not one of the following NOTE...

Page 162: ... matériels Warnung Anschlusse die mit anderen Geraten verbindet werden konnen sind als SELV beschrieben Um Konformitat mit EN 60950 zu versichern sichern Sie es daß diese Anschlusse nur mit den des selben Type auf anderen Geraten verbindet werden All Models These units are not suitable for connection to an IT power distribution system nor for use in a host device which is connected to an IT power ...

Page 163: ... S GUIDE 02 23 2010 Rev A Page 155 of 205 In the following example Answer can be set only to Manual AT AA0O Ring 1 AT AA1 and Ring 2 AT AA2 Other settings are restricted NOTE Refer to later sections in this appendix for information on using the modem in the U S A ...

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Page 170: ...th the modem Some software packages may be affected by this new functionality Raymar Telenetics recommends that you change the initialization string of your software communication package for the restricted options or option settings that may apply in your country Refer to the software package documentation for further information If you enter a restricted AT AT or AT command for an option that ha...

Page 171: ...ear panel view of the 3261 leased line modem with dial restoral This version is used in o U S A Model 3261 o Canada Model 3266 o Japan Model 3266 NOTE 326X Series Modems for Canada and Japan are identical to Model 3261 for the U S A The model number of the modem for Canada and Japan is 3266 Canada and Japan are included in this section with the view of the U S A 3261 modem ...

Page 172: ...tion shows rear panel views of the 3265 dial only modem and the countries using the layout 3265 Modem Rear Panel View A Figure C 3 shows View A of the 3265 Modem This version is used in Australia Belgium Czech Republic Denmark Finland Ireland Israel Italy Malaysia Netherlands Norway Portugal South Africa Spain Universal International ...

Page 173: ...2 23 2010 Rev A Page 165 of 205 3265 Modem Rear Panel View B Figure C 4 shows View B of the 3265 Modem This version is used in Germany and Austria 3265 Modem Rear Panel View C Figure C 5 shows View C of the 3265 Modem This version is used in Hong Kong and the United Kingdom ...

Page 174: ... Modem Leased Line with Dial Restoral This section shows three rear panel views of the 3266 leased line modem with dial restoral and the countries using the layout 3266 Modem Rear Panel View A Figure C 7 shows View A of the 3266 Modem This version is used in Australia Belgium Czech Republic Denmark Finland France Ireland Israel Italy Malaysia Netherlands Norway Portugal South Africa Spain Sweden S...

Page 175: ...2 23 2010 Rev A Page 167 of 205 3266 Modem Rear Panel View B Figure C 8 shows View B of the 3266 Modem This version is used in Germany and Austria 3266 Modem Rear Panel View C Figure C 9 shows View C of the 3266 Modem This version is used in Hong Kong and the United Kingdom ...

Page 176: ...ure card models 3262 3263 3267 and 3268 Standalone Models 3260 65 and 3261 66 Interface Pinouts This section shows the pinouts for the standalone modem s rear panel connectors Dial Line Interface Models 3260 3265 Dial line connection is made via the DIAL LINE interface on the modem s rear panel Table C 1 describes DIAL LINE connector pinouts Table C 1 Dial Line Interface Models 3260 3265 2 Wire Le...

Page 177: ... Models 3260 3265 Connection to an external telephone can be made using the PHONE connector on the modem s rear panel Table C 3 describes PHONE connector interface pinouts Table C 3 Phone Line Interface Models 3260 3265 Dial Line Interface Models 3261 3266 Dial line connection is made via the DIAL LINE interface on the modem s rear panel Table C 4 describes DIAL LINE connector pinouts ...

Page 178: ...05 Table C 4 Dial Line Interface Models 3261 3266 2 Wire Leased Line Interface Models 3261 3266 2 wire leased line connections are made via the LEASE LINE interface on the modem s rear panel Table C 5 descibes 2 wire leased line interface pinouts Table C 5 2 Wire Leased Line Interface Models 3261 3266 ...

Page 179: ...C 6 4 Wire Leased Line Interface Models 3261 3266 Phone Connector Interface Models 3261 3266 Connection to an external telephone can be made using the PHONE connector on the modem s rear panel Table C 7 describes PHONE connector interface pinouts Table C 7 Phone Line Interface Models 3261 3266 Card Models 3262 67 3263 68 Backplane Interface Pinouts Dial Line Interface All Card Models Dial line con...

Page 180: ...al Line Interface All Card Models 2 Wire Leased Line Interface Models 3262 3267 2 wire leased line connections are made via the 2W LEASE interface for modem A and via the 2W 4W LEASE interface for modem B Table C 9 describes 2 wire leased line interface pinouts Table C 9 2 Wire Leased Line Interface Models 3262 3267 ...

Page 181: ...re made via the 2W 4W LEASE interface Table C 10 describes 2 wire leased line interface pinouts Table C 10 2 Wire Leased Line Interface Models 3263 3268 4 Wire Leased Line Interface Models 3263 3268 4 wire leased line connections are made via the 2W 4W LEASE interface Table C 11 describes 4 wire leased line interface pinouts Table C 11 4 Wire Leased Line Interface Models 3263 3268 ...

Page 182: ... TT option For these call failure conditions nine subsequent redial attempts are allowed If the redial call attempts are unsuccessful after a total of 10 calls the number is placed on the delayed list Then it cannot be dialed for 30 minutes After 30 minutes the number is available for dialing Austria Forbidden Call Lists The modem processes call attempt failures as forbidden calls according to PTT...

Page 183: ...Finland Delayed Call Lists The modem processes call attempt failures as delayed calls according to PTT regulations Before dialing a number the modem determines whether The number is on the delayed list The delayed list is full the list holds 16 numbers In either case the number is not dialed When the modem is turned off and then on again the lists are cleared and the numbers can be dialed After di...

Page 184: ...within a 2 minute period the number is placed on the forbidden list and no calls are allowed to this number If the call is successfully dialed within the 2 minute period the forbidden condition is cleared If not the number remains on the forbidden list and calls to this number are not allowed until the modem is powered down and then turned on again Hong Kong Delayed Call Lists The modem processes ...

Page 185: ...er is available for dialing Netherlands Delayed Call Lists The modem processes call attempt failures as delayed calls according to PTT regulations Before dialing a number the modem determines whether o The number is on the delayed list o The delayed list is full the list holds 16 numbers In either case the number is not dialed When the modem is turned off and then on again the lists are cleared an...

Page 186: ...s the number is available for dialing Spain Delayed Call Lists The modem processes call attempt failures as delayed calls according to PTT regulations Before dialing a number the modem determines whether o The number is on the delayed list o The delayed list is full the list holds 16 numbers In either case the number is not dialed When the modem is turned off and then on again the lists are cleare...

Page 187: ...s it has been tested and found to meet requirements for telecommunications operations and safety in Canada The label does not guarantee however that the equipment will operate to your satisfaction Repairs to certified equipment should be made by an authorized Raymar Telenetics agent If the equipment malfunctions due to any unauthorized repair or alteration the telecommunications company may reques...

Page 188: ...The standard connecting arrangement codes for the equipment are as follows CA02B CA11A CA40A CA41A and CA45A Canadian Emissions Statement This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil numérique de la classe A respecte toutes les exigencies du Règlement sur le materiél brouilleur du Canada Rear Panel Pinouts This sectio...

Page 189: ...2010 Rev A Page 181 of 205 Table C 13 describes PHONE connector pinouts for RJ jack types Table C 13 PHONE Connector Pinouts for Jack Operation 3266 Modem Table C 14 describes dial line connector pinouts for RJ jack types Table C 14 DIAL Line Connector Pinouts for Jack Operation ...

Page 190: ...ows Denmark Blind Dialing 326X Series Modem users in Denmark must comply with the requirements in the Regulation Regarding Teleterminal Equipment No 882 October 29 1992 available from the Danish Minister of Communications The setup of the modem must comply exactly with the restrictions within this Denmark section and as specified in the Restricted Features Summary in this guide The factory default...

Page 191: ...nications private speechband circuits is invalid if the apparatus is subject to any modification not authorized by the British Approvals Board of Telecommunications BABT or if it is used with or connected to any of the following Internal software that has not been fully accepted by BABT External software or external control apparatus that causes the operations of the modem or associated call setup...

Page 192: ...ments each of which is assumed to have an REN of 1 0 unless otherwise marked Compliance with BABT SITS 83 08 A Clause 1 2 The modem cannot allow Auto Call using 999 or other PABX emergency numbers Modes other than 1 2 or 3 should not be used on the BT PSTN This modem is a mode 1 device Check the numbers entered during the Auto Call setup phase prior to dialing Compliance with BS6789 Section 6 1 19...

Page 193: ...ge of telephone numbers for retrieval by a predetermined code Detection of initial proceed indication Operation of the absence of proceed indication Automatic dialing facilities Tone detection i e Ring Tone etc Multiple repeat attempt facility Automatic clearing from call originating end Call progress monitor Series connection Modem PBX timed break register recall Auto answer Any other usage will ...

Page 194: ...uch connection is made Compliance with BABT SITS 83 009 Section D Caution Do not enter more than two 4 second pauses following the initial access digit or digits Failure to comply with this requirement may result in unsatisfactory operation Installation of Telephone Socket If you need to obtain a suitable British Telecom socket or extension make a photocopy of the following form complete all the n...

Page 195: ...believe it is necessary The telephone company may make changes to its facilities equipment operations and procedures that can affect the operation of your modem If this happens the telephone company provides you advance notice for making the necessary modifications to your modem to maintain uninterrupted service Also this equipment cannot be used on telephone company provided coin service Connecti...

Page 196: ...a series of registered jacks for use with a dial line network or General Switched Telephone Network sometimes referred to as PSTN These jacks are designated as RJxxx type jacks where RJ means Registered Jack and xxx specifies the jack series For example RJ11 indicates a registered jack from series 11 Sometimes the jack designation is followed by a letter ex RJ11C that indicates the jack housing st...

Page 197: ...ear Panel Pinouts This section provides modem rear panel pinouts cross referenced to the pinouts for the telco jacks supported in the U S A 3260 Modem Table C 16 describes DIAL LINE connector pinouts for RJ jack types X indicates the signal is active Table C 16 DIALLINE Connector Pinouts for Jack Operation ...

Page 198: ...C 17 describes PHONE connector pinouts for RJ jack types X indicates the signal is active Table C 17 PHONE Connector Pinouts for Jack Operation 3261 Modem Table C 18 describes DIAL LINE connector pinouts for RJ jack types X indicates the signal is active Table C 18 DIAL LINE Connector Pinouts for Jack Operation ...

Page 199: ...r Pinouts for Jack Operation Dial and Leased Line Transmit Levels Dial Line Transmit Level Your 3260 3261 3262 or 3263 Modem does not support the DL TX option You select the dial line transmit level through the Telco option in the TELCO OPT S category Use the following as a guide Leased Line Transmit Level The leased line transmit level for the 3260 3261 3262 ir 3263 Modem is adjustable from 0 to ...

Page 200: ... RJ16C data jack Connect the exclusion key telephone to the PHONE jack on the rear panel if your modem is not connected to an RJ36 jack combination 3 From the TELCO OPT S menu set the Telco option to a jack type RJ16C RJ45S or RJ4MB supporting the exclusion key feature Telco Option AT J Telco displays only on U S A and Canadian 326X Series Modems It is used to select the RJ jack type Telco corresp...

Page 201: ...NEST BACKPLANE S BUSY OUT FEATURE This section applies to the following countries which use the Universal International UI Modular Nest enclosure backplane Australia Belgium Canada Denmark Finland Ireland Israel Norway Sweden Switzerland U S A This section also is of interest to users in Hong Kong and the United Kingdom Make Busy versions of Modular Nest 9 and Modular Nest 21 backplances which ins...

Page 202: ...equipment damage which could jeopardize your warranty and maintenance agreement Users who are not qualified to perform this action themselves should contact Raymar Telenetics regarding available upgrade services Avertissement Seul un personnel qualifié est autorisé à enlever les cavaliers Nous appelons qualifiée toute personne familière avec le fonctionnement du produit ayant suivi une formation d...

Page 203: ...diesen Geräten ausgehen können Werden diese Komponenten von unqualifiziertem Personal entfernt kann dies Verletzungen von Personen oder Geräteschäden zur Folge haben und Ihre Garantie und Wartungsvereinbarung gefährden Anwender die keine Berechtigung zum Durchführen dieses Vorgangs besitzen sollten Upgradedienste von Raymar Telenetics oder einem autorisierten Händler anfordern Refer also to Figure...

Page 204: ... OF THE PURCHASE PRICE OF THE PRODUCT FOR ANY LOSS OF USE LOSS OF TIME INCONVENIENCE COMMERCIAL LOSS LOST PROFITS OR SAVINGS OR OTHER INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS RAYMAR PRODUCT TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW WITHOUT LIMITING THE FOREGOING RAYMAR SHALL HAVE NO LIABILITY FOR ANY DATA STORED IN OR USED WITH THE PRODUCT ...

Page 205: ...t model number the serial number a description of the problem being encountered and the cause of the problem if known Please note that prior to authorizing a return a product support specialist may call to verify that the product is properly installed or may ask you to perform tests to insure that the product has actually failed The product must be properly packed and returned to Raymar Telenetics...

Page 206: ...nal Timing is derived from the asynchronous data with character boundaries defined by start and stop bits Auto answer Automatic answering A modem responds to an incoming call over a dial line and establishes contact with a remote modem Baud The rate at which discrete signal elements are transmitted In asynchronous transmission baud rate bit rate In most synchronous transmissions the baud rate is a...

Page 207: ...aries by country Byte An 8 bit sequence of binary digits bits taken as a singe unit by a computer CCITT See ITU Consultative Committee on International Telephone and Telegraph International data communications standards group Character A group of bits used to represent one digit letter or symbol often in 7 or 8 bit groups Character oriented A communications protocol that carries control informatio...

Page 208: ...signal Digital signal The binary 0 off and 1 on output of a data terminal Modems convert digital signals into analog waves for transmission over conventional telephone lines DSR Data Set Ready This signal is passed from the local modem Indicates that the local modem is ready to enter the data transmission phase DTE Data Terminal Equipment End user devices that generate or receive data and that pro...

Page 209: ...ard Switching from a lower to a higher data rate Flow control Controls data transfer between endpoints in a data network line signals or flow control characters stop and start the flow of data Four wire A circuit containing two pairs of wires one pair for each transmission direction Full duplex A signaling circuit that allows simultaneous 2 way transmission and reception Frame A group of bits tran...

Page 210: ...ts synchronous and asynchronous transmission rates of 4 8 7 2 9 6 12 0 and 14 4 kbps ITU V 42 Used with full duplex asynchronous data transmission V 42 is an ITU adopted standard which specifies two methods of error correction for modems MNP 4 and LAPM Link Access Protocol for Modems ITU V 42 bis Used with full duplex asynchronous data transmission V 42 bis is a high performance data compression a...

Page 211: ...r demodulator enabling digital data to be sent over analog transmission facilities Modulation Systematic changing of properties e g amplitude frequency phase of an analog signal to encode and convey digital information MNP Microcom Networking Protocol An asynchronous communications protocol that provides error correction Multiplexer 1 Any multiport device that allows two or more users to share a c...

Page 212: ...witched Telephone Network PTT Postal Telegraph and Telephone Government authority in many European companies that typically operates the public telecommunications network sets standards and policies and negotiates communications issues internationally for a particular country QAM Quadrature Amplitude Modulation A type of modulation that varies both the phase and amplitude of an analog wave RS 232 ...

Page 213: ...ived from the V 42 bis data compression algorithm SDC only applies when synchronous data is framed in HDLC SDLC like format Tail circuit A point to point second tier circuit directly connected back to back to the remote modem of the first tier circuit The connection is made using a DCE DTE crossover cable Training A technique that adjusts modems to current telephone line conditions The transmittin...

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