PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
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AAL1 SAR Processor
1.3 Access Multiplexer Application
An access multiplexer must allow voice circuits to be made across a single ATM service inter-
face. A circuit emulation interface card supports circuit connection to a Private Branch Exchange
(PBX). As Figure 6 shows, CAS signaling is needed to support a wide variety of legacy PBXs.
Circuit
Private
Emulation Card
Branch
Exchange
(PBX)
T1
AAL1gator II
(PM73121)
ATM Service
OC-3
Interface
ATM Access
Multiplexer
SONET
S/UNI-LITE
PM5346
Workstation
Figure 6. Using the AAL1gator II in an ATM Access Multiplexer Application
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