AT&T MERLIN LEGEND Installation & Maintenance Manual page 230

Installation
4. Call all the DID numbers by repeating steps 1 through 3.
Note: If there are not enough dial-out trunks, work with the
CO to check all the DID trunks or have someone call from the
outside to check each DID trunk.
5. Hang up all the telephones used in this test.
Note: Before making the following tie-trunk tests, make sure that the
tie trunks for the system are connected and properly configured.
Test the Incoming Tie Trunks
Follow these steps to make sure the incoming tie trunks work:
1. At the far-end tie-trunk site, have someone pickup the
handset and access a tie trunk assigned to a button on your
telephone.
Your telephone should ring, and the green LED next to the tie-
trunk button should flash.
Note: To test a dial-repeating tie trunk, have the person at the
far-end tie-trunk site dial a system extension number. (No
dialing is required to test an automatic incoming tie trunk.)
2. Pick up your handset and verify that you have good two-way
communication.
3. At your telephone and the distant telephone, hang up.
4. Repeat steps 1 through 3 for all incoming tie trunks.
3-122 System Acceptance Test