Cisco XM Universal Gateways Cisco AS5400XM - Manual (Page 52)

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Cisco AS5400XM Universal Gateway Chassis Installation Guide
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Chapter 4 Troubleshooting
Using the Bantam Jacks for Test Port Functionality
Using the Bantam Jacks for Test Port Functionality
You can use the bantam jack connectors on the DFCs for test port functionality, as explained in the
following sections.
Monitor Mode for the T1, E1, and T3 DFCs
The Monitor mode is available on the T1, E1, and T3 dial feature cards.
If a T1 controller does not come up, or there are a large number of errors associated with a particular
controller, you might be able to determine whether the problem is in the DFC or in an external T1 line
by using the test port. The test port is a set of bantam jack connectors located on the front panel of the
DFCs.
In monitor mode, you can monitor only the ingress side of the T1 line without disrupting that line.
The bantam jack connectors located on the front panel of the DFCs allow the connection of an external
test device (for example, a FIREBERD test device) to monitor the individual T1 circuit in monitor mode.
Use software commands to select a T1 line. For information on software commands, see the
Cisco AS5350 and Cisco AS5400XM Universal Gateways Software Configuration Guide for details.
Passive monitoring equipment is used to listen on the TX MON and RX MON jacks during regular
operation to detect T1 errors.
Connecting test equipment to the following bantam jack connectors provides various functions:
• TX MON can monitor signals coming out of the test port without interrupting normal data
transmission.
• RX MON can monitor signals going in to the test port without interrupting normal data transmission.
Drop and Insert Mode for the CT3 DFC
Drop and insert mode is available on the CT3 dial feature card.
The bantam jack connectors located on the front panel of the card allow the connection of an external
test device (for example, a FIREBERD test device) to test any of the 28 individual T1 circuits in drop
and insert mode. In drop and insert mode, the T1 line is dropped out of service.
Note In drop and insert mode, the T1 line is dropped out of service. To prevent accidental use of the
push button in drop and insert mode, use the test trunk drop-insert privileged EXEC command
to disable the drop and insert mode on the specified T3 controller.
The test trunk drop-insert privileged EXEC command is used to enable or disable drop and insert mode
on a T3 controller. When the system initially boots up, the drop and insert mode is disabled on all T3
controllers.
To drop a particular T1 line to the test port, follow these steps:
Step 1 Enable drop and insert mode by entering the test trunk drop-insert on command in privileged EXEC
mode:
Router# test trunk drop-insert on t1port