[Spce-user] Ring back problem with a peer

[Pablo Muñoz-Cobo]

Hello:

We are moving in one client from asterisk to spce. The server is already 
prepared but i have a little issue with my provider. In inbound calls 
when the call is made since a mobile device the ringback is not working. 
I see the ringback in sipwise is make on the sdp that is what my peer 
support team is complaining about. I really don't get why if i get 
ringback calling from a fix phone i do not get it when the call is from 
a mobile. If the failure would be that the ring back shouldn't be 
attached in the sdp i also shouldn't be getting  ringback when calling 
from a fixed phone right?

This is what the my peer support team states about their softswitch 
behaviour (GSX).

the issue is on the egress IP peer(spce). They do send 180 Ringing with 
SDP, but no RTP media packets with RBT. You need to ask them to do 
either of these 2 things:

1) Send RTP media packets with the RBT. The egress peer does send SDP in 
180 Ringing, so the GSX is expecting RPT which he would pass to the 
ingress peer.

2) Do not send SDP in the 180 Ringing. This, if configured on the GSX, 
will make the GSX to generate LRBT and send it to the ingress.



Any help to perform  what they say or any argument to fight back their 
statement. Thanks a lot for help!!

Cheers
PAblo


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