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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter 1 Product Overviews
Cisco MGX 8880 Media Gateway
MGX 8830/B Redundancy Connector
The MGX 8830/B chassis has optional 1:3 (RCON-1to3-8850) RCONs for 1:N redundancy when using
MPSM-16-T1E1 cards. A single chassis supports up to two RCONs, one in the upper and one in the
lower bay. These RCONs are keyed to ensure that back cards are inserted properly.
Figure 1-42 show the 1:3 (RCON-1to3-8850) assembly.
Figure 1-42 RCON-1TO3-8830 RCON Connector
To install or remove RCONs, see Installing or Removing Redundancy Connectors, page 6-22.
Cisco MGX 8880 Media Gateway
A discussion of the MGX 8880 Media Gateway (shown in Figure 1-2) requires an introduction to the
Voice Switch Service Modules (VXSMs). The MGX 8880 Media Gateway and VXSM cards were
introduced in MGX Release 5.
Voice Switch Service Module Overview
The Cisco Voice Switch Service Module (VXSM) is the next-generation voice module for the MGX
8880 Media Gateway and MGX 8000 Series Multiservice Switches. The VXSM is a high-density voice
module designed for ultimate compatibility with the Cisco MGX 8880 Media Gateway. The Cisco
VXSM offers high availability, scalable and robust voice features for wireless, wireline, and cable
applications.
The Cisco VXSM is a high-density voice service module with time-division multiplexing (TDM)
interfaces ranging from T1/E1, T3, to Channelized OC-3/STM-1. It provides service providers with
carrier-class capabilities for high capacity and reliability for voice over IP (VoIP) services. The Cisco
VXSM supports up to 8064 DS-0s and can protect active voice calls if scheduled or unscheduled outages
occur.
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