3-6
Cisco Cable Clock Card Hardware Installation Guide for the Cisco uBR7246VXR Universal Broadband Router
OL-26705-01
Chapter 3 Removing and Installing the Clock Card
Connecting a Clock Card Interface Cable
Connecting a Clock Card Interface Cable
You can use up to two DB-15 T1 connections on the clock card. They are available from Cisco Systems
and outside commercial cable vendors.
To connect DB-15 T1 cables to the clock card, follow these steps:
Step 1
Attach the DB-15 T1 cable directly to either the primary or secondary DB-15 interface port on the clock
card. (See
Figure 3-2
.)
Note
When attaching the cable receptacle on the clock card, use the cable-management bracket that shipped
with your router for extra strain relief.
Figure 3-2
Connecting a Clock Card Cable—Front View
Step 2
Attach the network end of your DB-15 T1 cable to your CSU/DSU, DTE, or other external equipment.
Step 3
Repeat Steps 1 and 2 for the other DB-15 T1 interface.
This completes the procedure for attaching a DB-15 T1 cable to the clock card. Proceed to
Chapter 4,
“Configuring the Clock Card.”
31510
uBR - CLK-T1
ENABLE
HOLDOVER
FREERUN
FAULT
LOS
PRI
SEC
ACTIVE
To external
clock source
DB-15 T1 cable
