Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

VOIP Call Disconnects on answer/ off hook

Hi

I am having a problem whereby IP calls coming in over the WAN are being dropped on lifting up the handset. In the past I have had this problem when there is a routing problem but this does not seem to be the case this time. Do you have any suggestions on what this could be ?

Call Flow is

PSTN->PBX->E1->3825->MPLS->3825->E1->IPPBX->IP Phone

4 REPLIES
New Member

Re: VOIP Call Disconnects on answer/ off hook

Try answering with the speaker button. If it answers than you have an issue with your handset trigger.

New Member

Re: VOIP Call Disconnects on answer/ off hook

Hi

There are multiple phones. The problem is also intermittant, it will work fine for a while and then 5 or so calls will disconnect as soon as it is answered. Then it will work fine for a while.

New Member

Re: VOIP Call Disconnects on answer/ off hook

Had a similar problem, but not intermittent. One of my routers was forcing a codec on a dial peer, so I was getting a codec mismatch. Calls would ring but as soon as someone answered, it would disconnect the call. And it was only when accessing that dial peer.

New Member

Re: VOIP Call Disconnects on answer/ off hook

Hi Guys

Problem was a dodgy DSP.

Thanks

867
Views
0
Helpful
4
Replies