I am trying to utilize a SIP trunk to a Cisco BTS. The current configurations on the BTS will not accept the "From:" field of the SIP invite having a quoted callerid name , ie
From: "someuser" <sip:email@example.com>;tag=blahblah
It requires it to be only
I have tried setting the callerid name portion different ways. It seems that if the name portion length is zero then it automatically uses the num portion. For example the following, also with CALLERID(all), but havent found anything that works thus far.
exten => s,1,Set(CALLERID(num)=8885551212)
exten => s,2,Set(CALLERID(name)=)
The best I have found thus far is to create From: "" <sip:8885551212@....... which will still fail on the BTS
Is there a way without changing the actual C source to do not have the quoted portion included?