CUCM 5 calls get disconnected

Unanswered Question
Oct 1st, 2008
User Badges:


i have a problem with calls that were disconnected. In detail:

In front of the problem i will describe my environment. We use a CUCM with Voicegateway connected over MGCP.

The problem occurs only on phones with multiple lines on it. For better problem explanation, here are some numbers:

Internal Phone (A) with multiple lines:

DN1 2335

DN2 2678

Internal Phone (B) with some line:

DN 2222

PSTN (PSTN) Numbers:


When i call from an internal phone (A) a number in the (PSTN) all is very good. The conversation is very well.

But when another internal phone (B) calls the internal phone (A) that is connected to the (PSTN) on the second line, then the call to (PSTN) gets disconnected and on phone (A) i hear a tone sounds like the MLPP-Tone. The phone (B) gets a Busy tone.

We have only one phone that has rights to interrupt conversations with the pattern 264# and this works fine.

Has anyone some ideas?

Many many thanks


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
CHRISTIAN END Thu, 10/02/2008 - 06:15
User Badges:

Hello again,

i opened a Tac Case for this problem. Probably is someone here in the NetPro and can help...

Thanks a lot...



This Discussion