User ManualTable of ContentsChapter 1. Understanding ISDN and the ISU 1281ISDN Overview1The ADTRAN ISU 1281ISU 128 Interoperability4Recommended Operating Protocols6Chapter 2. ISDN Ordering Codes (IOCs)9Ordering ISDN using IOCs9Capability S10Applications10Capability R10Applications10Capability B10Capability C10Chapter 3. Installation11Network Connection11DTE Data Connection12Dial Interface Connection12Maintenance Interface13Chapter 4. Operation15Menu Navigation15Getting Started16Status Buffer16VT 100 Terminal Menu Support17Status Screen17Configuration Screen18Chapter 5. Testing19TEST Options19Loopback DTE20Loopback Network20Loopback Protocol20Loopback Remote21Test Remote21Loopback Disable21No Remote Loopbacks21DDS Accepted21V.54 Accepted21DDS+V54 Accept22Near-End Block Errors/Far-End Block Errors (NEBE/FEBE)22Software Version22Chapter 6. Configuration23Dial Line Operation23Switch Protocol24Call Type24Speech24Audio25Data 56 kbps25Data 64 kbps (default)25Terminal Identification25Setting the SPID25Setting the LDN26Dial Options29Front Panel29RS-366291 sec or EON302 sec or EON305 sec or EON (default)3010 sec or EON3020 sec or EON30Wait for EON30AT Commands30Using AT Commands31Using S-Registers31Reading S-Registers32Reading S-Register Strings32Changing S-Registers32Changing S-Register Strings32Dialing a Call Using the AT Command Processor32V.25 bis33V.25 ASYNC Dialing34V.25 SYNC HDLC Dialing35V.25 SYNC BISYNC Dialing35V.25 HDLC FLAG35Disabled35Auto Answer36Disabled36Enabled36Dump all calls36Answer Tone37No Answer Tone (Default)37Incoming Tone37Outgoing Tone37Always Tone37Connect Timeout38Call Screening38Leased Line Service40Clock Mode: Slave/Master40Channel rate41DTE OPTIONS42Bit Rate42Connector Type43RTS Options43CTS Options43CD Options43DTR Options43DSR Options44Flow Control (Asynchronous Data Format)44Data Format (Asynchronous)45Transmit Clock (Synchronous Data Format)45Chapter 7. Protocol Options47Protocol Options47Clear Channel48BONDING Mode 148TXINIT49TXFA49TXADD0150TXDEQ50TANULL50TCID50V.12050V.11051V.3451Error Control51Compression52Microcom™ Network Protocol Block Size (MNP® Blk)52DSU 57.6 ASYNC53T-Link53Simple ADTRAN Protocol (SAP)53FALLBACK54Point-to-Point (PPP) Async-to-Sync56Point-to-Point Protocol (PPP)56Multilink Point-to-Point Protocol (MP)56PPP with Compression57Chapter 8. Quick Setup59Quick Setup Configuration59Quick Setup60Dial 56K sync*60Dial 64K sync*61Dial 112K sync*61Dial 128K sync*62Dial PPP*62V34 115.2 async*63Dial 57.6 asyn*63Dial 115.2 asyn*64Fallback 57.6k*64More65Leased 128K65Ldm 128 Master65Factory Setup66Chapter 9. Dial Options67Dialing Options67Hang Up Line68Dial Number68Redial Last Number68Answer Call68Dial Stored Number68Store/Review Number69Chapter 10. Remote Configuration71Remote Configuration71Configuring with AT Commands71VT 100 Terminal72Configure Remote Unit73Remote Testing74Loopback Remote 1B74Loopback Remote 2B74Set Password74Chapter 11. Troubleshooting77If Self Test Fails77If The ISU 128 Does Not READ READY77Chapter 12. Specifications83Specifications and Features83Network Interface83DTE Interface83Dialing Selections83Data Rates (Network)83Data Rates (DTE)83Rate Adaption84Interoperability84Switch Compatibility84B Channel Aggregation84Display84Environmental85Physical85Power85Appendix A. AT Commands87Appendix B. Current Status Messages93Appendix C. Status Buffer Messages97Appendix D. S-Register List107Appendix E. Connector Pinouts115Acronyms121Glossary123ISU 128 Rear Panel2ISU 128 Front Panel3ISU 128 Interoperability5VT 100 Status Screen17VT 100 Configuration Screen18VT 100 Test Screen19Test Menu Tree20Loopback Points20Dial Line Menu Tree23VT 100 Configuration Screen24Configuration Menu Tree27Dial Options, RS-366 Menu Tree29Dial Options, V.25 bis Menu Tree33Dial Line, Auto Answer Menu Tree34Data Bits Menu Tree34V.25 bis ASYNC Menu Tree35Answer Tone Menu Tree37Connect Timeout Menu Tree38Call Screening Menu Tree38Leased Line Menu Tree40Limited Distance Modem Application40Leased Application with Channel Banks41Asynchronous DTE Options Menu Tree42Synchronous DTE Options Menu Tree42Flow Control Menu Tree44Data Format Menu Tree45Protocol Menu Tree48BONDING Mode 1 Protocol Menu Tree49V.34 Error Control Menu Tree51V.34 Compression Menu Tree52V.34 MNP Block Size Menu Tree52FALLBACK Menu Tree55PPP Menu Tree56Quick Setup Menu Tree59VT 100 Terminal Dial Options Screen67Dial Menu Tree68Remote Configuration Menu Path72Remote Configuration Screen72Remote Unit Configuration Screen73Test Menu Path74Loopback Remote 1B75Set Password Screen75EIA-232/RS-530 Interface115V.35 Interface117RS-366 Interface118RJ-45 Interface118Maintenance Port119DTE Indicators3Recommended Operating Modes7Maximum DTE Interface Cable Lengths12Rate Adaption Protocols54EIA-232 Interface115RS-530 Interface116V.35 Interface117RS-366 Interface118RJ-45 ISDN IFC118Maintenance Port119Data Bits8Stop Bits1Data Bits8Stop Bits1Data Bits8Stop Bits1Data Bits8Stop Bits1Data Bits8Stop Bits1End-of-Line character value13Line Feed character value10Backspace character value8Size: 777 KBPages: 152Language: EnglishOpen manual