T1/FT1 Overview, T1 Service Offerings | ADTRAN TSU 600 specs

Chapter 1. Introduction

Chapter 1

Introduction

T1/FT1 OVERVIEW

The T1 digital communications link has been used by telephone companies (telcos) for transmitting voice since the early sixties. The D4 channel bank is a T1 digital carrier system that was introduced in the mid seventies and is still widely used by telcos. Communi- cation demands of businesses continued to grow to the point that the telcos began offering T1 service directly to the public. D4 channel banks began to be used for T1 in corporate network topographies for voice. The technological advances in computer development also created a demand for T1 data communication which now is a large part of the T1 traffic.

T1 Service Offerings

T1 is a digital service that is delivered to the user over two pairs of wires from the service provider. The signal operates at 1.544 Mbps and is usually extended by repeaters that are installed about every mile after the first 6000 feet. The T1 signal is divided into 24 time slots which operate at 64 kbps (DS0s). Each time slot is occupied by digitized voice or by data.

The T1 signal originally used a type of framing known as D4 Superframe which identifies how the T1 is multiplexed. An enhancement of that framing format, called Extended Superframe Format (ESF), is avail- able. It provides a non-disruptive means of full time monitoring on the digital facility. The ESF was originally used by the service provider to monitor the

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TSU 600 User Manual

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ADTRAN TSU 600 user manual T1/FT1 Overview, T1 Service Offerings

Contents

Part Number 1200076L2 1200076L2#DC TSU 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/FT1 Overview T1 Service Offerings Fractional T1 Functional Description TSU 600 OverviewFront View of the TSU Introduction TSU 600 Rear Panel Identification of Rear Panel Layout Features of the TSU Network Interface TSU InterfacesTSU 600 Interfaces Chain Port Output Control Port Input Front Panel Three Methods of ControlAdtran PC Program Snmp Slot Option Slot ArrangementSlots TSU 600 Option Slot Arrangement Secondary Interfaces SI Option PortsOther Data Interfaces Network Timed TSU 600 Clock SourcesNetwork Timed Clock Source DTE Clock Source DTE Timed Internal Clock Source Internal Timing Normal CSU Timing Self Tests TSU 600 TestingLoopback Tests Network Loopback Tests TSU Port Interface Loopback DTE Interface Loopback Pattern Generation Bridge, PBX, Video Conferencing Application Set Up TSU 600 Configuration ApplicationsTSU 600 Option Modules Bridge, PBX, Video Conferencing Application All Voice Application All Voice Application Set Up Variations of Mixed Applications Drop and Insert, Voice, and Bridging Application Variations of Mixed Applications Shipped by Adtran UNPACK, INSPECT, Power ConnectionProvided by Customer Power Connection Warranty and Customer Service Grounding Instructions UL Installation Network WiringNetwork Pinout GND Control In/Chain-in Chain-out Pinout Chain-out Self Test Power UP Testing and Initialization To Establish a Passcode Set User Passcode No Passcode Desired Set Unit Identification Control In PC Set Control Port Example of Chain-in Correct Passcode Normal Power-Up Procedure Identification of Front Panel Layout Operation TSU TSU 600 Front Panel Layout Alarm red Used in various menus to clear data/result fields Select a Menu Item General Menu Operation Sample Submenu Display and Data Fields Data Port Identification Module Slots, TSU Four Opening Menus Menu Structure Display of Opening Menus Opening Menu Functions 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 Complete Status Menu Status 1NI Perf Rpts Network Performance Reports NI Perf RptsNetwork Interface Performance Report Network Interface Errors NI Errors Network Interface Error Type Active Alarms Port Status View History Remote Port Complete Configuration Menu Configuration Config Network NI YEL AlarmFormat D4 is equivalent to superframe format SF Clock Source Xmit PRMSET LBO Inband Lpbck CTL Port AccessTraps OFF Map Exchange Selection DisplayAuto Selection Times for Map Exchange DS0 Map Designations Create Temp Copy a Temp Review MAP AB Create Temp Selection Screen Review Temp Selected Port and Quantity of DS0sEdit Temp Apply Temp a Port Configuration Port Configuration Port Config Complete Utility Menu Tree Utility Util Time/Date Factory Restore Set Passcode Unit ID ID Software Revision Software Rev Port Utility Complete Test Menu Test Network Tests Remote Loopbck Qrss always runs at 64K/DS0 All zeros Than 1 bit error and less than Bit errorThan 320 bit errors Since the start of testing Run Selftest Port Tests Cancel Tests Operation Example of Voice and Data Mix Voice and Data MIX Configure the Network Steps to SET UP Voice and Data MIXConfiguration for Network Interface Prior to Step Configuration for DTE Port Configure DTE Port 1.1 Nx56/64 From Option ModuleSelect the number of DS0s/Port12 Configuration for DS0 Map Complete the DS0 Map ConfigurationNx56/64 Activate Configuration Menu Complete a Configuration Table for the DSX-1 PBX PassthruConfiguration for DSX-1 PBX Passthru First Two Configuration Menu Items First Two Network NI Configuration Menu Items Configuring the Network Interface First Two Network NI Menu Items DS0 Map a and Map B Configuration Menu Items Configuring the DS0 MAPCreate Map Menu with Displayed DS0 Number Display of DS0 Port Name Passthru Selection Field Example Operations Review Temporary MAPReview Screen Window Showing Edit Temp Option Edit Window Showing the Error Window Showing Port Configuration Option Configuring the PortsScreen Used To Change Mode Example Operations Far End Looped Back Test Testing Example 101 Test Menu One Four Test Submenu Windows Test Pattern Screen for Qrss all DS0s Screen that Appears During Loopback Verification SES Pressing the 2 key results in injecting errors Test Termination 106 Appendix a Figure A-1 TSU 600 Complete Menu Tree DTE Data Rate Chart DTE RATE=56K DTE RATE=64K DTE Data Rate vs. DS0s Configure Network Appendix C System Configuration Charts Configuration Chart for DTE Port Configure DTE Port 1.1 Nx56/64Rate Chart Select number of DS0s/PORT DS0 Map B Configuration DS0 Map a ConfigurationDS0 Map a Configuration DS0 Map B Configuration 114 Status Messages Network Interface NI Alarm Messages Network Interface NI 116 Index Symbols DTE Qrss 120 Product Support Information