Dead air on a connected call means that the media stream is not in place. This
can be for several reasons:
1. Transcoder at HQ site (if you're using the 6608 blade) is not registered,
not in the correct MRG, MRGL, or location(this is a hidden killer), or using
the WRONG DEFAULT GATEWAY.
2. Transcoder at CME site not registered. In addition to configuration of
dspfarm profile, three sdspfarm commands are required in telephony-service.
Make sure the g729r8 codec has been set up for transcoding. Use the show sccp
to confirm the transcode resource is up, registered and operational.
3. SCCP is attempting to register to the incorrect address. The sccp ccm
command should point at the same ip address being used as the source address in
the telephony service section of your config.
4. Incoming dial-peer not explicitly defined correctly causing call to use
default dial peer. Default dial peer cannot invoke transcoder. Use the show
voice call status to see which dial peers are operational. This issue is the
primary cause of this type problem, although anything in this list can cause it.
5. MRGL not correctly assigned to the GK Trunk.
Cliff
----- Original Message -----
From: jeffrey liujian
To: Cliff McGlamry ; Voice CCIE ; gughan...@yahoo.in ; rxlm...@gmail.com
Sent: Saturday, April 04, 2009 8:44 AM
Subject: Re: [OSL | CCIE_Voice] ccm to cme voicemail
Hi all,
There is some trouble.
ccm --> gk --> cme using g729, cme --> cue using g711.
when ccm phone makes a call to cme phone or cue number:
1. call can be connected, but no sound at all.
2. if I change the code (between ccm and cme) to g711, everything is fine.
Why does this happen?
Thanks.
Jeffrey
------------------------------------------------------------------------------
From: Cliff McGlamry <cl...@mcglamry.net>
To: Gughan Gug <gughan...@yahoo.in>
Cc: ccie_voice@onlinestudylist.com
Sent: Saturday, March 21, 2009 5:19:05 PM
Subject: Re: [OSL | CCIE_Voice] ccm to cme voicemail
Oh, this one bites lots of folks.
In the telephony-service, make sure you have: call-forward pattern .T
If you're missing that, it won't work.
Cliff
----- Original Message -----
From: Gughan Gug
To: ccie_voice@onlinestudylist.com
Sent: Saturday, March 21, 2009 1:46 AM
Subject: [OSL | CCIE_Voice] ccm to cme voicemail
Hi,
CCM phones call to CME phones through gatekeeper . phone from ccm site can
call to cme voicemail but if the phone call to cme ip phone and get redirected
the calls get disconnected.
I have allowed the h323 to sip and sip to h323 coneectiion under voice
service voip,transcoder at cme
when a cme phone call the other one and at noan the calls get redirected
properly to vociemail.
Any help in this regard. anything i am missing here. since ccm phoes can
call directly to cme voice
mail using the voicemail number no issue, only when it gets redirectd the
call get disconnected.
Regards
Gug
----------------------------------------------------------------------------
Add more friends to your messenger and enjoy! Invite them now..
