[cisco-voip] Callmanager and Nortel

[Ryan Ratliff]

CSCsc64303 shows it was fixed in 4.1(3)ES64 which was posted June 22  
of 2006.   My best guess is that this fix did make it into 4.2.   
There was also a slightly different description for that bug, where a  
call was up between a Cisco and Nortel phone and the Nortel phone  
transferred the call to a second Nortel phone.   It's not a big  
difference but it is different.

You'd have to look at traces to see when the Nortel sends the updated  
RTP information (SIP SDP) and if CCM actually tells the phone of the  
new RTP destination or not.

-Ryan

On Sep 8, 2008, at 12:49 PM, Aman Chugh wrote:

Ok, I am little confused as per the interoperability portal ,It  
mentions that call transfers work between Nortel CS1K running release  
4 and CM 4.1 .

Then I found CSCsc64303 which says call transfer results in No audio  
and is fixed in CM 5. If Cisco guys can verify that I am hitting this  
it would help.

Aman

On Mon, Sep 8, 2008 at 9:56 PM, Aman Chugh <aman.chugh at gmail.com> wrote:

I have integration between Nortel CS 1000 running release 5 and  
CallManager 4.2 sr4 , I am able to make calls between Nortel and  
Cisco Ip phones.  The issue occurs when ever a call between two  
nortel phones is transferred to a cisco IP phone over the SIP trunk ,  
I have no audio between Cisco and Nortel. I am using G711 codec over  
the SIP trunk. The Cisco IP Phone rings and the call is established  
but have no audio either side. I can see the SIP invite message and  
ACK messages in the CCM trace but not sure what I am missing here.

TIA

Aman

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