2-81
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