Cisco Systems AS5350, AS5400 manual Using the Bantam Jacks for Test Port Functionality

Chapter 6 Troubleshooting

Using the Bantam Jacks for Test Port Functionality

Using the Bantam Jacks for Test Port Functionality

Test port functionality is supported by Cisco IOS Release 12.1(2)XD and later releases.

Monitoring 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 is 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 T1, E1, and T3 DFCs. (See Figure 6-7.)

Figure 6-7 Bantam Ports

Bantam ports

T1 or E1 ports

35840

0 1

Rx Tx

2 PRI

ACT OK

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 AS5400 Universal Gateway 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 T3 DFC.

The bantam jack connectors located on the front panel of the T3 DFC 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-insert mode.

In drop-insert mode, the T1 line is dropped out of service. To prevent accidental use of the push button in drop-insert mode, use the test trunk drop-insertprivileged EXEC command to disable the drop-insert mode on the specified T3 controller.

Cisco AS5350 and Cisco AS5400 Universal Gateway Card Installation Guide

78-13311-01 6-9