AT&T 3.0 manual Testing Ground-Start Trunks

Testing Trunks

2If you find a central office trunk that does not have dial tone, check for a bad adapter or loose connection.

If adapters and wiring are in working order but you still do not hear a dial tone, notify the AT&T Service Center acting as the customer’s agent.

3When you hear a dial tone, dial a known telephone number to verify dialing.

After the central office completes the connection, check that you have good two-way transmission.

4If you cannot dial out on any of the trunks, notify the AT&T Service Center acting as the customer’s agent.

It is the customer’s responsibility (or that of the customer’s agent) to report service outages to the local telephone company.

Testing Ground-Start Trunks

To perform this test, you need a single-line telephone with a ground key or a ground-start button.

NOTE:

If a single-line telephone with a ground key or ground-start button is not available, ground one side of the trunk.

To test ground-start trunks, follow the steps below:

1Plug the single-line telephone into each central office line/trunk jack (either at the network interface or at the cross-connect field).

2Pick up the handset.

You should hear a dial tone.

3Ground the ring lead by pushing the ground key or ground button, or by grounding one side of the trunk.

4Remove the ground from the ring lead.

5Dial a telephone number to verify dialing.

Also, check that you have good two-way transmission after the central office completes the connection.

Connecting the Control Unit to the Network Interface 4-13