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235-200-150
January 2003
3.10
Install the BRI to PRI to Back up the T1
OVERVIEW
The T1 facility can have a back up connection established when the T1 connection is
unavailable. In order to back up the T1, a BRI is used at the remote site. One
B-channel is used as a 64K backup channel when the T1 connectivity is lost. It does
not provide the same throughput as a 1.544K T1 but allows for maintenance activities
to take place. The BRI at remote site is a purchased by the customer. It must be a
National ISDN BRI with CSD 64KB Clear capabilities on B-channel 1, a 10-digit CSD
DN, and a SPID.
Purpose
Use this procedure to set up the BRI to PRI backup for the T1.
When to Use
The following procedure is used to provide a backup mechanism for the network when
the T1 is not accessible.
To create a T1 backup for the network, each of the up to 15 BRIs and one PRI need to
be configured. In this configuration, the PRI is located at the 5ESS
the BRI is located at each DRM site.
Before You Begin
The following factors must be considered before you begin the procedure:
Required Conditions
The following conditions should exist before the procedure is performed:
•
Verify that the router is connected to the network.
•
Verify that a terminal (laptop computer or VT100 terminal) is connected to the
network.
PROCEDURE
3.10.1 Install the PRI at the Host Site
1.
t the Host Site, Connect Router 00 to Port 301 and the MDF.
3.10.1.1 Assign Trunk type as T1 PRI
Enter 3 for configuration.
1.
Response:
The Configuration Commands menu is displayed.
Enter 2 for port.
2.
Response:
The Configure Port menu is displayed.
Enter 300 for PRI.
3.
Response:
The T1 Trunk Parameters menu is displayed.
Enter 1.
4.
5.
Enter the following information: (Use the arrow keys to navigate the screen.)
• At Trunk Type, enter T1 PRI. (Use return key to change.)
Issue 3.00
NETWORK PROCEDURES
Procedure 3.10
®
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Page 3.10-1
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