Cisco Systems AS5800 manual Trunk Card Bantam Jacks, Drop-and-Insert Mode

Chapter 3 Channelized T3 Trunk Card

Using the Test Port

Trunk Card Bantam Jacks

The test port is a set of bantam jack connectors located at the bottom of the CT3 front panel (see Figure 3-4). The bantam jacks 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 or to monitor an individual T1 circuit in monitor mode.

•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-insertprivileged EXEC command to disable the drop-and-insert mode on the specified T3 controller.

•In monitor mode, you can monitor only the ingress side of the T1 line. The T1 line being monitored is not disrupted, and the line maintains its HDLC and modem connections through TDM.

Drop-and-Insert Mode

The test trunk drop-insertprivileged 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 privileged EXEC command as follows:

AS5800# test trunk drop-insert on shelf/slot/unit

Note The shelf/slot/unit identifies the T1 to the CT3 controller.

Step 2 Push and quickly release the push button below the LED to toggle to the port number. The push button is labeled “MONITOR #” in Figure 3-3.

Note You must release the push button within 2 seconds to advance through the port numbers (from 1 to 28). After port 28, the display returns to port 1.

Step 3 Push and hold the push button for two or more seconds.

The letter “D” (indicating drop-insert) is displayed in the front panel LED, indicating that the particular T1 line has been dropped to the test port.

Note To select another port number, press the push button again and hold it for two or more seconds. You can now toggle to another port number.

Step 4 Disable the drop-and-insert mode after testing the T1 lines. We recommend that you disable drop-and-insert mode to prevent accidental use of the push button on the CT3 board.

To disable drop-and-insert mode, enter the test trunk drop-insert off privileged EXEC command as follows:

AS5800# test trunk drop-insert off shelf/slot/unit

Cisco AS5800 Universal Access Server Dial Shelf Card Guide

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