Please, look at these logs.

Fist invite witchout SDP (from 1007@uat.agent.starpoundtech.net to vk_1008@uat.agent.starpoundtech.net) not wait respond from 1008 and send 200 Ok to 1007. Called phone didn't accept call.

 

 

 <extension name="testplay5" continue="true">
   <condition field="destination_number" expression="^vk_1008$">
     <action application="bridge" data="sofia/doublenat5090/1008@172.26.10.65:17748"/>
   </condition>

</extension>

 

ip:ports

172.26.200.252:5071 - userAgent (starpound), originator call

172.26.200.252:5080 - FS external profile

172.26.200.252:5090 - FS doubleNat profile

172.26.10.65:38464  - phone1 (1007, registered on FS)

172.26.10.65:17748  - phone2 (1008, registered on FS)