Avaya Configuring Frame Relay Services Uživatelský manuál Strana 5

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308624-14.10 Rev 01
v
Contents
Preface
Before You Begin ............................................................................................................xvii
Text Conventions ...........................................................................................................xviii
Acronyms .........................................................................................................................xix
Hard-Copy Technical Manuals .........................................................................................xxi
How to Get Help .............................................................................................................xxii
Chapter 1
Frame Relay Overview
Introduction to Frame Relay ............................................................................................1-2
Permanent Virtual Circuits ..............................................................................................1-3
Switched Virtual Circuits .................................................................................................1-3
PVC and SVC Comparison ............................................................................................1-4
Frame Relay Packets ......................................................................................................1-5
Management Protocols ...................................................................................................1-7
Frame Relay SVC Signaling and LAPF ..........................................................................1-8
LAPF Operational States .........................................................................................1-9
LAPF Timeout and Retransmission Timers ...........................................................1-10
Timer T200 ......................................................................................................1-10
Timer T203 ......................................................................................................1-11
SVC Signaling ..............................................................................................................1-11
Call Setup ...............................................................................................................1-11
Message Processing ..............................................................................................1-13
Frame Relay Service Records ......................................................................................1-14
Default Service Record ..........................................................................................1-14
Multiple Service Records .......................................................................................1-15
Adding and Moving PVCs ......................................................................................1-15
Frame Relay Access Modes .........................................................................................1-15
Group Access Mode ...............................................................................................1-15
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