Specifications

1-4 Cisco MGX 8220 Reference, Release 4.1
MGX 8220 System Overview
MGX 8220 Cards
Unless a service module uses the SRM 3T3 distribution bus, MGX 8220 cards are 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 4.1 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 a UNI/NNI 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 a UNI/NNI interface to the attached BPX switch
over a E3 ATM interface.
• Broadband Network Module (BNM-155)
This is a pair of cards which together provide the interface to the attached BPX switch over a
SONET 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 a Frame Forwarding port.
• Frame Service Module for T1 (FRSM-8T1)
This card provides interfaces for up to eight T1 lines, each of which can support one 56 kbps or
one Nx64 kbps FR-UNI, FR-NNI port, ATM-FUNI, or a 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 a Frame Forwarding port.
• Frame Service Module for T1 channelized (FRSM-8T1-C)
This card provides interfaces for up to eight 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 (FRSM-8E1)
This card provides interfaces for up to eight 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.
• Frame Service Module for E1, channelized (FRSM-8E1-C)
This card provides interfaces for up to eight 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.