ADTRAN T1-FT1 user manual Fractional T1

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Chapter 1. Introduction

performance of their service offering. Since the introduction of ESF, equipment that is installed in private networks can also provide the same performance information to the user.

Fractional T1

Fractional T1 lets the buyer purchase less than a full T1 circuit between two points. Most carriers offer fractional T1 in increments of 56 or 64 kbps. Connection is made to the same network elements. The network allows multiple users to share the same interoffice T1 bandwidth.

Fractional T1 remains almost exclusively an Inter-Exchange Carrier (IXC) service. Local Exchange Carriers (LECs) typically do not offer FT1, so the user's proximity to the IXC's point of presence (POP) is key in the savings that fractional T1 offers.

Fractional T1 local access is available in two forms, 56kbps or a full T1 line. In 56 kbps the required number of DDS lines is extended from the IXC POP and the bandwidth is combined at the office on an outbound T1 circuit. The user pays for the individual 56K lines and the amount of the interoffice T1 utilized. In T1 access, the user pays for a full T1 to the IXC POP and then only for the bandwidth utilized.

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TSU User Manual

61200060L1-1

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Contents T1-FT1 Data/Channel Service Unit Part Number 1200060L1Page Iii Service REN/SOC FIC UsocPage Important Safety Instructions Warranty and Customer Service Viii Table of Contents Operation Index Index-1 Table of Contents Xii Figure A-1 TSU Complete Menu Diagram List of FiguresList of Figures List of Tables List of Tables T1 Service Offerings IntroductionT1/FT1 Overview Fractional T1 TSU Overview Functional DescriptionFunction Test JacksControl Features InterfacesControl Port Input Network InterfaceNx56/64 Serial Interface Chain Por t OutputAdtran PC Program Three Methods of ControlFront Panel SnmpTSU Clock Sources Network TimedDTE Timed DTE Clock SourceInternal Timing Internal Clock SourceTSU Testing Self TestsLoopback Tests Network Loopbacks TSUDTE Interface Loopbacks All OnesApplication 511Power Connection InstallationUNPACK, INSPECT, Power Connection Adtran Shipments IncludeNetwork Pin Connection WiringNetwork PIN Name DescriptionControl In/Chain Control In/Chain In Pin ConnectionControl PIN Connection Name Description Chain Out Chain Out Pin ConnectionChain OUT PIN Connection Nx 56k/64/ DTE PIN Connection Nx56k/64k DTEPrimary V.35 Pin Connection PIN Ccitt DescriptionPower UP Testing and Initialization Self TestOperation Methods of OperationALM CancelFront Panel Operation LCD WindowGeneral Menu Operation T a T U SO N F I G Setting the Data Field E T W O R K N N I TCode Z S Viewing Display Only Data Fields To Exit Any Menu Field Operation or DisplayMenu Structure Four Opening MenusFour Opening Menu Functions TIME/DATE Fact RestoreUtil Software VersionMenu Operation Status Menu1RESET Perf Cntrs NI Perf RPTS, Submenu of 1StatusMinutes Hours 15MIN / 24HRData Values Alarm Investigated State Active/InactiveCurr ERR/ALM Submenu of 1Status Clear History ERR/ALM Hist Submenu of 1StatusConfiguration Complete Configuration MenuNetwork NI Submenu of 2 Config O R M a T Code Z SXmit PRM O N T R O L P O R T Alarm S UNIT, Submenu of 2 ConfigCntrl Port Alarms Data RatePORT, Submenu of Config Rate 56/64Normal Mode of Operation # of ChanUtil 1Time/Date, Submenu of 3UtilM E 0 5 0 7 0 T E 0 8 / 0 5 / 9 Keystroke Summary for Editing Time/Date2Software Rev, Submenu of 3Util 3Reinit Unit, Submenu of 3Util5Fact Restore, Submenu of 3Util E I N I T D D R E S S 0 04Address,Submenu of 3Util Test Complete Test Menu1Network Tests, Submenu of 4Test Loopback or 3PATTERN R 5 1 1 Error S 5 1 1 Error S = 5 2Run Selftest, Submenu of 4TestS T E M S E L F T E S T T E L O O P B C K O F F3Port Tests submenu of 4Test Operation N I T O R 3 U T I L Testing ExampleFar End Looped Back Test Network Interface TestE T W O R K T E S T S U N S E L F T E S T Press Enter to activate a Remote Payload Loopback Testing Example Figure A-1. TSU Complete Menu Diagram Appendix a TSU Complete MenuAppendix A. TSU Complete Menu Appendix B DTE Data Rate Chart DTE Data Rate vs DS0s N # of DS0s NDTE Rate = 56K Appendix B. DTE Data Rate Chart Index NumericsIndex Presales Inquiries and Applications Support Post-Sale SupportRepair and Return