1-4
Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter1 Overvi ew of the VISM and VISM-PR Cards
VISM and VISM-PR Card Types
Figure1-3 VISM T1 and E1 Back Cards
The VISM or VISM-PR card and MGX 8000 Series switch combination provides an interface, or voice
gateway, between conventional TDM networks and packet-switched networks (see Figure 1-4).
Figure1-4 Cisco MGX 8850 and VISM as a Voice Gateway
Connection to the packet network is performed by Cisco MGX 8000 Series switch Processor Module
cards—PXM1, PXM1E, and PXM45—which communicate with a VISM card through the switch’s
midplane cellbus. Refer to the documents listed in Table 5 of the “Related Documentation” section on
page xiv for more information on the MGX 8000 Series switch midplane cellbus.
RJ48-8T1
1
2
3
4
5
6
7
8
R-RJ48-8T1
R
E
D
U
N
D
A
N
T
R-RJ48-8E1
R
E
D
U
N
D
A
N
T
R-SMB-8E1
R
E
D
U
N
D
A
N
T
RJ48-8E1
1
2
3
4
5
6
7
8
SMB-8E1
RX1
TX1
RX2
TX2
RX3
TX3
RX4
TX4
RX5
TX5
RX6
TX6
RX7
TX7
RX8
TX8
T1-RJ48 E1-RJ48 E1-SMB Redundant
T1-RJ48 Redundant
E1-RJ48 Redundant
E1-SMB
71218
V
T1/E1
PBX or
Central Office MGX 8850
with
VISM
Packet Network
(IP/ATM)
Voice/TDM Networks
Packet Networks
3
1427