If you don't give out sip traces and logs that shows the packets, why it is disconnected is anyone's guess. For starters, make sure your SBC can handle REFER.


On 01/12/2012 08:48 AM, S.K.- G wrote:

URGENT!

The issue was with the link to SBC, we had it as a SIP trunk but we had to use UNMANAGED Gateway instead that resolved the issue.

NOW. ...The other issue that appeared is , when a call comes in to the Auto Attendant through a DID number and after the caller enter the extension number he wants to reach, the call get disconnected after 10 seconds of dead air .. Any helps!!

*From:*Joegen Baclor [mailto:[email protected]]
*Sent:* Saturday, January 07, 2012 8:54 PM
*To:* Discussion list for users of sipXecs software
*Cc:* S.K.- G
*Subject:* Re: [sipx-users] Call Forwarding ..

Does forwarding work when you forward to an internal phone instead of another trunk?

On 01/08/2012 12:02 AM, S.K.- G wrote:

Thank you Tony and Michael..
We have eliminated the softphone from our testing and we are currently using
Navigata for incoming DID and ISP telecom for outgoing calls .. Still same
problem.. Please advise??
The attached Wireshark was captured when 6477247514 called the Sipx DID 647
689 7627 ( ext. 7627 / Polycom IP 550) and gets forwarded after 10 sec to
416 9515329 .. My cell rang but no audio ..
SIPX   74.112.46.78
SBC   74.112.46.12
Incoming DID   Navigata
Outgoing trunk:   ISP Telecom
Please advise, Your help is greatly appreciated Regards
Saad
-----Original Message-----
From:[email protected]  
<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of Tony Graziano
Sent: Saturday, January 07, 2012 10:10 AM
To: Discussion list for users of sipXecs software
Subject: Re: [sipx-users] Call Forwarding ..
This is a very non-traditional deployment. SIPX is hosted and there is
an acme sbc sitting in the same network as sipx. all users are remote
(behind a firewall) though sipx is setup to use the remote sbc via
sipxbridge. The issue they are having is with hairpinned calls via the
acme and the itsp. I've suggested to them that they look at using a
second itsp for the forwarded calls to test whether the itsp supports
it, as some simply do not work. Additionally, I've specified their
softphone is incorrectly configured and should be removed from the
test environment until it is properly configured/registered.
4.4(latest) On Sat, Jan 7, 2012 at 9:42 AM, Michael Picher<[email protected]> <mailto:[email protected]> wrote:

    What version of 4.4 are you on (check bottom of GUI and post here)?

    On Sat, Jan 7, 2012 at 9:11 AM, S.K.- G<[email protected]>  
<mailto:[email protected]>  wrote:

        Dear All,

        We are experiencing a weird problem with the Trunk to trunk call

        forwarding feature.

        The call forwarding is not working when an outside caller gets forwarded

        to another external number.. the call ends up with a dead air, seems 
like

        the RTP stream is not getting connected properly as the SIP signaling

        negotiation process is being completed properly and the receiver phone

rings

        but no audio path when answered.

        We have tried the resolution xx-9521 but didn't make any differences as

        the INVITE From ITSP Account was checked ..

        NAT Traversal, and Server behind NAT are checked in the internet calling

        form.. SIPX 4.4 on VMWARE server, Polycom IP 650 station, X-lite 4.0

        The network diagram:   SIPX>  SBC>  remote Polycom phones(In DMZ)

        Any helps will be highly appreciated

        Regards

        Saad Khankan

        Toronto- Canada

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        [email protected]  <mailto:[email protected]>

        List Archive:http://list.sipfoundry.org/archive/sipx-users/

    --

    Michael Picher, Director of Technical Services

    eZuce, Inc.

    300 Brickstone Square

    Suite 201

    Andover, MA. 01810

    O.978-296-1005 X2015

    M.207-956-0262

    @mpicher<http://twitter.com/mpicher>

    www.ezuce.com  <http://www.ezuce.com>

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