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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 2 Illustrated Card List for MGX Switches and the MGX 8880 Media Gateway
Front Cards
Note The RCON card (Redundancy Connector) is a small assembly that, when installed, attaches to
the top and/or bottom of the rear shelves and spans slots 1 to 6. Back cards connect to the RCON
which in turn connects to the mid-plane of the chassis. The RCON provides redundant paths for
the back cards, and its use is described in the Cisco Voice Switch Services (VXSM) Configuration
and Command Reference Guide for MGX Switches, Release 5.
VXSM cards can be installed in a MGX 8850, MGX 8850/B, or MGX 8880 chassis. The differences
between these chassis are as follows.
• Physically the two chassis are card compatible, the same control and service module cards can be
installed in either chassis. However, the MGX 8880 supports only those cards that are used in media
gateway applications. These are PXM45/C, VXSM, AXSM, and RPM-XF cards.
• The MGX 8880 chassis is smaller in height than the MGX 8850 or MGX 8850/B. Three MGX 8880
chassis can be installed in a 7-foot rack (as opposed to two for the MGX 8850 or MGX 8850/B).
• An RCON card is an integral part of the MGX 8880 chassis.
• The MGX 8850 has no RCON support. The MGX 8850/B chassis has optional RCON(s).
The pin assignments on the VXSM-BC-24-T1E1 back cards are as shown in Table 2-34 and Table 2-35.
Table 2-34 Transmit Pin to Signal Assignments
Pin Signal Signal Pin
1 TXRING1 TXTIP1 26
2 TXRING2 TXTIP2 27
3 TXRING3 TXTIP3 28
4 TXRING4 TXTIP4 29
5 TXRING5 TXTIP5 30
6 TXRING6 TXTIP6 31
7 TXRING7 TXTIP7 32
8 TXRING8 TXTIP8 33
9 TXRING9 TXTIP9 34
10 TXRING10 TXTIP10 35
11 TXRING11 TXTIP11 36
12 TXRING12 TXTIP12 37
13 TXRING13 TXTIP13 38
14 TXRING14 TXTIP14 39
15 TXRING15 TXTIP15 40
16 TXRING16 TXTIP16 41
17 TXRING17 TXTIP17 42
18 TXRING18 TXTIP18 43
19 TXRING19 TXTIP19 44
20 TXRING20 TXTIP20 45
21 TXRING21 TXTIP21 46