Lucent Technologies 555-661-150 manual Conference Cannot Add Call, Did Calls Not Completed

MERLIN LEGEND Communications System Release 6.1			Issue 1
Network Reference 555-661-150			August 1998
6 Troubleshooting
	Conference: Cannot Add Call		Page 6-17
	Conference: Cannot Add Call	6

Non-local extensions are treated as outside parties for the purpose of transfer. A non-local conference participant takes up one of the two outside calls permitted in a conference.

NOTE:

A PassageWay Telephony Services client cannot add a non-local extension to a conference. The user must add the conferee by using a telephone. If a conferee is dropped, the PassageWay Telephony Services client display does not so indicate. A PassageWay Telephony Services client, when added to a conference, only sees information about the conference originator, not about other conferees.

If this is not the problem, call the Lucent Technologies Helpline at 1 800 628-2888; consultation charges may apply.

DID Calls Not Completed 6

There are several reasons why Direct Inward Dialing (DID) calls across a private network may not complete, either due to busy facilities or to faulty programming. The coordinating system manager may need to address the problem.

Possible Cause 1: All programmed and available routes for the call are busy.

What to do: This problem solves itself when traffic decreases. Only address the problem if it persists.

Note the extension number range for the DID destination. At the system where the call is received from the PSTN, check that the pattern assigned to the range includes sufficient different routes with pools (of tandem and/or PSTN facilities) to handle the call volume. This is accomplished by checking the error for errors 4C01 (Pool Empty), 4C02 (Pool Busy), or 4C03 (Pool Busy and/or Out-of- Service). If any of these error codes are present, check the pool index on the maintenance screen to determine if it matches the pool used to deliver the call. If it matches, check occurrence times and count. If the count is too high and the occurrences indicate the problem occurred within the duration of the occurrences, consider changing the routing of the call, pool sizes, or add trunks to the pool if empty.

■To add more routes that can handle the call, see “Uniform Dial Plan Routing” on page 25 or “UDP Routing” in Chapter 4 of System Programming.

■If more trunks are available and need to be assigned, follow the procedure in “Trunks to Pools Assignment” in Chapter 4 of System Programming to assign more tandem trunks. All the tandem trunks in a pool must be of the same type (tie or PRI).