Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 47

Y-Cable Specifications

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Chapter 3 Installing the Router Connecting the Network Cables Step 4 Step 5 Turn on power to the router. Check that the CD LED goes on, which means that the card's internal CSU/DSU is communicating with the CSU/DSU at the T1 or E1 service provider central office. The T1/E1 Multiflex VWIC uses an RJ-48C connection, as shown in Figure 3-4. Figure 3-4 RJ-48C Connection 24939 8 7 6 5 4 3 2 1 RJ-48C connector Table 3-2 shows the pinout configuration of the RJ-48C connectors on the T1/E1 Multiflex VWIC. Table 3-2 RJ-48C Pinout Pin Description 1 receive tip 2 receive ring 3 receive shield 4 transmit tip 5 transmit ring 6 transmit shield 7 not used 8 not used Y-Cable Specifications Although it can be used in a standalone MWR 1941-DC router, the T1/E1 Multiflex VWIC is designed to be used in redundant configurations in an IP-RAN implementation. Such configurations require a special Y-cable for connecting the active and standby routers. The Y-cable provides a dual E1 or T1 PRI connection. This section describes the specifications of the Y-cable used in redundant configurations in an IP-RAN implementation. • T1/E1 Multiflex VWIC Y-cables should be made with 4 twisted-pair, shielded, 28-gauge cables. • The cable length of each stub (from the RJ-48C connector to the junction point) should not exceed 3 inches (76 mm). 78-15827-06B0 Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide 3-7

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3-7
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
78-15827-06B0
Chapter 3
Installing the Router
Connecting the Network Cables
Step 4
Turn on power to the router.
Step 5
Check that the CD LED goes on, which means that the card’s internal CSU/DSU is communicating
with the CSU/DSU at the T1 or E1 service provider central office.
The T1/E1 Multiflex VWIC uses an RJ-48C connection, as shown in
Figure 3-4
.
Figure 3-4
RJ-48C Connection
Table 3-2
shows the pinout configuration of the RJ-48C connectors on the T1/E1 Multiflex VWIC.
Y-Cable Specifications
Although it can be used in a standalone MWR 1941-DC router, the T1/E1 Multiflex VWIC is designed
to be used in redundant configurations in an IP-RAN implementation. Such configurations require a
special Y-cable for connecting the active and standby routers. The Y-cable provides a dual E1 or T1 PRI
connection.
This section describes the specifications of the Y-cable used in redundant configurations in an IP-RAN
implementation.
•
T1/E1 Multiflex VWIC Y-cables should be made with 4 twisted-pair, shielded, 28-gauge cables.
•
The cable length of each stub (from the RJ-48C connector to the junction point) should not exceed
3 inches (76 mm).
24939
8 7 6 5 4 3 2 1
RJ-48C connector
Table 3-2
RJ-48C Pinout
Pin
Description
1
receive tip
2
receive ring
3
receive shield
4
transmit tip
5
transmit ring
6
transmit shield
7
not used
8
not used