Fractional T1 | ADTRAN TSU 600 guide

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 perfor- mance information to the user.

Fractional T1

Fractional T1 (FT1) 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. Connec- tion 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 proximity of the user to the point of presence (POP) of the IXC is key in the savings that fractional T1 offers.

Fractional T1 local access is available in two forms, 56 kbps 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 56 kbps 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.

2

TSU 600 User Manual

61200.076L2-1

Image 14

ADTRAN TSU 600 user manual Fractional T1

Contents

TSU Part Number 1200076L2 1200076L2#DC Table of Contents Service Type Table of Contents Table of Contents Installation Operation Table of Contents Example Operations Figures 15. Drop and Insert, Voice, and Bridging Application Set Up Tables T1 Service Offerings T1/FT1 Overview Fractional T1 Front View of the TSU TSU 600 OverviewFunctional Description Introduction Identification of Rear Panel Layout TSU 600 Rear Panel Features of the TSU TSU 600 Interfaces TSU InterfacesNetwork Interface Control Port Input Chain Port Output Adtran PC Program Three Methods of ControlFront Panel Snmp Slots Option Slot ArrangementSlot TSU 600 Option Slot Arrangement Other Data Interfaces Option PortsSecondary Interfaces SI Network Timed Clock Source TSU 600 Clock SourcesNetwork Timed DTE Timed DTE Clock Source Internal Timing Internal Clock Source Normal CSU Timing Loopback Tests TSU 600 TestingSelf Tests TSU Network Loopback Tests DTE Interface Loopback Port Interface Loopback Pattern Generation TSU 600 Option Modules TSU 600 Configuration ApplicationsBridge, PBX, Video Conferencing Application Set Up Bridge, PBX, Video Conferencing Application All Voice Application Set Up All Voice Application Drop and Insert, Voice, and Bridging Application Variations of Mixed Applications Variations of Mixed Applications Provided by Customer UNPACK, INSPECT, Power ConnectionShipped by Adtran Power Connection Warranty and Customer Service Grounding Instructions UL Installation Network Pinout WiringNetwork Control In/Chain-in GND Chain-out Chain-out Pinout Power UP Testing and Initialization Self Test Set User Passcode To Establish a Passcode Set Unit Identification No Passcode Desired Set Control Port Control In PC Example of Chain-in Normal Power-Up Procedure Correct Passcode Operation Identification of Front Panel Layout TSU 600 Front Panel Layout TSU Alarm red Used in various menus to clear data/result fields General Menu Operation Select a Menu Item Sample Submenu Data Port Identification Display and Data Fields Module Slots, TSU Menu Structure Four Opening Menus Opening Menu Functions Display of Opening Menus Shows status of incoming commands on the chain-in port Displays and can be used to set the time and date Opening Menu Functions Detailed Discussion Status Complete Status Menu Network Interface Performance Report Network Performance Reports NI Perf Rpts1NI Perf Rpts Network Interface Errors NI Errors Active Alarms Network Interface Error Type View History Port Status Remote Port Configuration Config Complete Configuration Menu Format YEL AlarmNetwork NI D4 is equivalent to superframe format SF SET LBO Xmit PRMClock Source Inband Lpbck Traps AccessCTL Port Auto Map Exchange Selection DisplayOFF Selection Times for Map Exchange DS0 Map Designations Copy a Temp Create Temp Create Temp Selection Screen Review MAP AB Edit Temp Selected Port and Quantity of DS0sReview Temp Apply Temp a Port Configuration Port Config Port Configuration Utility Util Complete Utility Menu Tree Time/Date Factory Restore Set Passcode Unit ID ID Software Revision Software Rev Port Utility Test Complete Test Menu Network Tests Remote Loopbck All zeros Qrss always runs at 64K/DS0 Than 320 bit errors Bit errorThan 1 bit error and less than Since the start of testing Run Selftest Cancel Tests Port Tests Operation Voice and Data MIX Example of Voice and Data Mix Configuration for Network Interface Steps to SET UP Voice and Data MIXConfigure the Network Prior to Step Select the number of DS0s/Port12 Configure DTE Port 1.1 Nx56/64 From Option ModuleConfiguration for DTE Port Nx56/64 Complete the DS0 Map ConfigurationConfiguration for DS0 Map Configuration for DSX-1 PBX Passthru Complete a Configuration Table for the DSX-1 PBX PassthruActivate Configuration Menu First Two Configuration Menu Items Configuring the Network Interface First Two Network NI Configuration Menu Items First Two Network NI Menu Items Create Map Menu with Displayed DS0 Number Configuring the DS0 MAPDS0 Map a and Map B Configuration Menu Items Passthru Selection Field Display of DS0 Port Name Example Operations Review Screen Temporary MAPReview Edit Window Showing Edit Temp Option Window Showing the Error Screen Used To Change Mode Configuring the PortsWindow Showing Port Configuration Option Example Operations Testing Example Far End Looped Back Test Test Menu One 101 Four Test Submenu Windows Screen that Appears During Loopback Verification Test Pattern Screen for Qrss all DS0s Pressing the 2 key results in injecting errors SES Test Termination 106 Appendix a TSU 600 Complete Menu Tree Figure A-1 DTE Data Rate Chart DTE Data Rate vs. DS0s DTE RATE=56K DTE RATE=64K Appendix C System Configuration Charts Configure Network Rate Chart Configure DTE Port 1.1 Nx56/64Configuration Chart for DTE Port Select number of DS0s/PORT DS0 Map a Configuration DS0 Map a ConfigurationDS0 Map B Configuration DS0 Map B Configuration 114 Alarm Messages Network Interface NI Status Messages Network Interface NI 116 Symbols Index DTE Qrss 120 Product Support Information