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MGX 8220 System Overview
MGX 8220 Cards
MGX 8220 cards are always installed as a pair consisting of a front card (function module) and a
matching back card (line module) in the same slot, except for the SRM-T1E1 card which only has a
front card. Communication between slots is achieved through buses in the shelf backplane.
Release 3.0 consists of the following module pairs:
•
MGX 8220 Shelf Controller(ASC)
This is a pair of cards providing overall control of the shelf and providing line interfaces to
maintenance and control ports which are used for user configuration and management of the
shelf.
•
Broadband Network Module (BNM-T3)
This is a pair of cards which together provide the interface to the attached BPX switch over a T3
ATM interface.
•
Broadband Network Module (BNM-E3)
This is a pair of cards which together provide the interface to the attached BPX switch over a E3
ATM interface.
•
Frame Service Module for T1 (FRSM-4T1)
This card provides interfaces for up to four T1 lines, each of which can support one 56 kbps or
one Nx64 kbps FR-UNI, FR-NNI port, ATM-FUNI, or Frame Forwarding port.
•
Frame Service Module for T1 channelized (FRSM-4T1-C)
This card provides interfaces for up to four T1 lines, each of which can support multiple
(up to 24) 56 kbps or Nx64 kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding port.
•
Frame Service Module for E1 (FRSM-4E1)
This card provides interfaces for up to four E1 lines, each of which can support one 56 kbps or
one Nx64 kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame Forwarding port.
•
Frame Service Module for E1, channelized (FRSM-4E1-C)
This card provides interfaces for up to four E1 channelized frame relay lines, each of which can
support multiple (up to 31) 56 kbps or Nx64 kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame
Forwarding port.
•
ATM UNI Service Module for T1 (AUSM-4T1)
This card provides interfaces for up to four T1 lines, each of which can support one T1 ATM UNI
or ATM NNI.
•
ATM UNI Service Module for E1 (AUSM-4E1)
This card provides interfaces for up to four E1 lines, each of which can support one E1 ATM UNI
or ATM NNI.
•
Circuit Emulation Service Module for T1 (CESM-4T1)
This card provides interfaces for up to four T1 lines, each of which is a 1.544 Mbps unstructured
synchronous data stream.
•
Circuit Emulation Service Module for E1 (CESM-4E1)
This card provides interfaces for up to four E1 lines, each of which is a 2.048 Mbps unstructured
synchronous data stream.
•
Inverse Multiplexing for ATM Trunk Module—T3 to T1 (IMATM-T3-T1)
This card acts as an extension of the BPX BNI card and permits the BPX ATM trunk to be used
over multiple (up to 8) T1 lines instead of a single T3 line.
•
Inverse Multiplexing for ATM Trunk Module—E3 to E1 (IMATM-E3-E1)
This card acts as an extension of the BPX BNI card and permits the BPX ATM trunk to be used
over multiple (up to 8) E1 lines instead of a single E3 line.
1-4
Cisco MGX 8220 Reference
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