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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
The Cisco VXSM architecture combines a high-performance voice services engine with onboard digital
signal processors to provide advanced voice processing and features that allow quick development and
deployment of VoIP services. The Cisco VXSM offers carrier-grade voice quality with a full suite of
voice, modem, and fax features.
Together with a softswitch, the Cisco VXSM provides maximum deployment flexibility for various
packet voice networks based on the Media Gateway Control Protocol (MGCP), PacketCable™ Trunking
Gateway Control Protocol (TGCP), H.248, H.323, and the Session Initiation Protocol (SIP). The
innovative Cisco VXSM architecture provides investment protection, because new functions and
services can easily be added through software upgrades.
The supported VXSM cards are:
• MGX-VXSM-4-155 front card (4 OC3/STM-1)
• MGX-VXSM-48T1E1front card
• MGX-VXSM-T3 front card
• VXSM-BC-24T1E1 24T1/E1 back card
• VXSM-BC-4-155 4OC3 back card
• VXSM-BC-3T3 back card
• VXSM-R-BC redundant back card
Y cabling is supported with the VXSM-48T1E1 and VXSM-T3 cards.
MGX 8880 Media Gateway Overview
The Cisco MGX 8880 Media Gateway hardware has the same dimensions and same basic slot
configuration as the MGX 8850 multiservice switch. The MGX 8880 also fits in a 19-inch or a 23-inch
rack. However the MGX 8880 gateway has the following important differences:
• The MGX 8880 uses the PXM45/C controller card only.
• The MGX 8880 uses new fans.
• The DC version of the MGX 8880, with its low profile cooling system, enables three gateways to fit
in a rack.
• The MGX 8880 uses a new integrated redundancy connector (RCON) on the upper and lower right
(when viewed from the rear of the chassis).
• The MGX 8880 uses Voice Switch Service Modules (VXSMs).
• The MGX 8880 hardware implements color coding and mechanical keying to ensure correct
insertion of SRME/B cards, the PXM45/C processor cards, and the fan tray cable.
Note Information in this section is extracted from the current Cisco Voice Service Switch Module data sheet
as of April 2004. Please check online data sheets and release notes for the latest information.