Cisco Systems MGX 8220 MGX 8220 Service Modules

CHAPT ER
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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
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MGX 8220 Service Modules
Introduction
The MGX8220 shelf contains 16 slots. Each slot can accommodate a front card and a back card. Six
slots are reserved for common eq uipm ent modules as described in Ch ap te r 2, “Common Equipment
Description”.
The remaining ten slots (sl ots 5 through 14) are reser ved for Service Modules (SM s). Service Modules
provide functionality for s uc h s er vi ces as Frame Relay, ATM, and Circuit Emulation .
This chapter describes the Service Modules supported by the MGX8220.
•Frame Relay Service Modu le s (FRSMs), page 4-2
•ATM UNI Service Module, page 4-17
•Inverse Multiplexer for ATM Trunk Module, page 4-23
•Circuit Emulation Service Modules, page 4-26
•Service Module Back Cards, page 4-32
Although Service Resource M odu les (SR M s ) ar e c ategorized as core equipment, th ey a lso p ro vide
optional functions for the SMs.
•The AX-SRM T1/E1 can provide 1:N redundancy for the other service modules. The SRM is
described in Service Resource Modules, page 2-22
•The AX-SRM-3T3 provides three T3 servi ce line s to ca rry mult iple T 1 servi ce lines . The SR M-3T3
is described in the AX-SRM-3T3, page 2-24