In Missing voice sip call
(Tue 07 of Aug, 2012 (11:02 UTC))sampei80
hello guys i have problem when make call between 2 Phone Sip , we have a Pabx AAstraBP250 equipped with SIPU board , and we have the follow scenarius , 1 Phone Cisco 7940G , 1 Phone Cisco 7912A-G , 1 Phone Aastra Dialog 4422 .
First Case :
Call between Aastra Dialog 4422 and Cisco 7912A-G everything it ok
Second Case :
Call between Aastra Dialog 4422 and Cisco 7940G there are not voice when answer and after 30 s the call go down
Call between Cisco 7949G and Cisco 7912A-G there are not voice when answer and after 30 s the call go down
I get trace with with calls , please help me i ll send you the trace with email
check the codecs of these phone...
do they support each other codecs