
2-6
Cisco Multiservice Packet Network Solution Overview
OL-3025-01
Chapter 2 Solution Components
Media Gateways
Configurations requiring more than 192 E1 lines require more than one MGX platform.
Refer to the most current Release Notes for Cisco Multiservice Packet Network Solution for details of
the required Cisco IOS software release.
Protocol Support
Control Traffic
Special gateway controller protocols are used between the call agent and the VISM. These protocols are
transmitted as User Datagram Protocol/Internet Protocol (UDP/IP) datagrams to the edge router on the
same PVC as the voice traffic.
MGX-SMFIR-1-155 SRME 1-port 155 Mbps back card, single mode
fibre intermediate range (SMFIR), SC connector
2
MGX-STM1-EL-1 STM1 Elec. Interface back card for SRME-155-1,
SMB connector
2
MGX-VISM-8E1 Voice Interworking Service Module, eight E1
ports
9 to 12
MGX-VISM-PR-8E1 Voice Interworking Service Module-PR, eight E1
ports
9 to 12
AX-RJ48-8E1 8-port E1 back card with RJ48 connectors 9 to 12
Table 2-5 MGX 8850 Line Card Components (up to 96 E1 lines) (continued)
Product Description Quantity
Table 2-6 MGX 8850 Line Card Components (up to 192 E1 lines)
Product Description Quantity
MGX8850 MGX 8850, 24 I/O+4 SRM slots, PXM-1,
PXM-UI, cooling, 19”
1
PXM1-4-155-R Redundant PXM1-4-155, PXM1-UI (including
upgrade of the first PXM-1
1
MGX-MMF-4-155/B= PXM-1 4-port 155 Mbps back card, multimode
fibre (MMF), SC connectors
2
MGX-SRME Enhanced Service Redundancy Module 2
MGX-SMFIR-1-155 SRME 1-port 155 Mbps back card, single mode
fibre intermediate range (SMFIR), SC connector
4
MGX-STM1-EL-1 STM1 Elec. Interface back card for SRME-155-1,
SMB connector
4
MGX-VISM-8E1 Voice Interworking Service Module, eight E1
ports
13 to 24
MGX-VISM-PR-8E1 Voice Interworking Service Module-PR, eight E1
ports
13 to 24
AX-RJ48-8E1 8-port E1 back card with RJ48 connectors 13 to 24
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