AT&T 555-600-736 manual

Page 2

Issued January 1992

Copyright 1991. AT&T

555-600-736

Jim Pastorius

Kevin Lyons

Writers/Editors

Contributors:

A.Cohen D. Guerro V. Illuzzi

R.G. Koppenheffer D. Margolis

S.W. Osborne

H.T. Reeve

M.Stevenson B. Tannu C.A. White J. Webb

Image 2

Contents

AT&T Merlin Legend Communications System Application Notes Page Merlin Legend Trunking Concepts Application Note Index Introduction to Trunking Concepts TIP and Ring ExplainedLines and Trunks LOOP-START Trunks Operations LOOP-START Trunks POTENTIAL-PROBLEMS Problem of GlareAutomated Attendant Ghost Calls and Loop-Start Facilities Unavoidable Loop-Start Facility Applications LOOP-START Trunks When to USE LOOP-START TrunksProper Loop-Start Facility Applications Cost GROUND-START Trunks Operations GROUND-START Trunks Potential Problems GROUND-START Trunks When to USE GROUND-START TrunksDirect Inward Dialing did Trunks Operational Characteristics Did Trunk Signaling Characteristics Types of Loop Reverse-Battery SignalingAdministration Considerations in Using did Trunks Simple Tie Trunk Operation When to USE did TrunksTIE Trunks Tandem Tie Trunk Operation Transferring Calls Signaling and ImplementationTIE Lines P E Transmit C E I V E ON-HOOK OFF-HOOK OFF Premises Stations Page DS1 Service Overview and OperationsDESIGN, Signaling & Implementation Potential Problems/LimitationsData Communications Equipment Do GBS Customers Need T-1?Channel Service Unit CSU Multiplexer MUX DS1 Facility Services IsdnSDN SID/ANI Operation Overview Maintenance and TroubleshootingSpecial HOTEL/MOTEL Trunks Hardware Module LINE/TRUNK Station Type Specifications TTR Trunk analog voice Reusable Modules from Merlin II R3 Administration ConsiderationsReferences