Lucent Technologies 555-661-150 manual Calls to Non-Local Extensions Unexpected Busy Tone

MERLIN LEGEND Communications System Release 6.1	Issue 1
Network Reference 555-661-150	August 1998
6 Troubleshooting
Calls to Non-Local Extensions: Unexpected Busy Tone	Page 6-13

■Check to make sure the calling restriction of the default COR is set to unrestricted. The factory setting is outward restricted, which blocks calls across the private network.

■Check that the routes voice/data capability is correct for the type of call being made. The factory setting is Both, which will support both voice and data calls for PRI facilities.

■In each intervening system, compare the FRLs assigned to routes for the call with the default COR FRL. The route FRL must be equal to or lower than the default COR value or the call is blocked. The factory setting is 3.

■If FRL settings are not the cause, call the Lucent Technologies Helpline at 1 800 628-2888; consultation charges may apply.

Calls to Non-Local Extensions:	6
Unexpected Busy Tone

This topic discusses unexpected busy tones that may be caused by system features. It applies not only to regular calls from one private network extension to another but also to remote access calls that are routed among private network systems.

Possible Cause: Intersystem callers may receive a busy tone that is unexpected because they know that the call recipient has coverage. However, in a private network non-local calls are treated as outside calls by the system. The non-local extension may not have coverage for outside calls turned on.

What to Do: Depending upon how the non-local system is set up, try one of the following techniques in order to reach the extension:

■If the destination extension can be dialed directly via Direct Inward Dialing (DID) or PRI dial-plan routing, try calling the destination extension over public switched telephone private network trunks. If you receive the same busy tone, then the Coverage setting may be the problem. Call the system manager or receptionist at the non-local system and have them check the extension to ensure that coverage is correct and that the extension is functional.

■If you cannot dial the extension directly, use public switched telephone network facilities or the non-local dial plan in order to reach the operator for the non-local system. Have the operator transfer you to the extension. You should be able to leave a message for the extension user with voice mail or with the operator.

If neither of the above methods solves the problem, call the non-local system’s system manager or the private network coordinating system manager and explain the situation.