[Freeswitch-users] Annex B

[Ken Fulmer]

When we send calls to an Adtran gateway, our calls using g.729 work
properly. I noticed in the SDP the following field:

 

a=fmtp:18 annexb=yes

 

When we send calls to a Cisco gateway, the same call fails. 

 

Inbound g.729 calls coming from the Cisco gateway work properly and I
noticed the following:

 

a=fmtp:18 annexb=no

 

Is there a way to set this parameter in the dial-plan or sip profiles so we
can match what the Cisco gateway is looking for? 

 

Thanks,

 

Ken Fulmer

 

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