Hai,<br>I have a freeswitch setup  in that one asterisk pbx registered. 
For this setup am facing problem with lower version of yealink phone and
 grandstreams . Whenever 200 ok came in freeswitch changing IP phone ip 
to asterisk PBX ip.It is showing messages in FS cli  switch_rtp.c &quot;<b><i>Auto 
changing IP PHONE IP to ASTERISK PBX IP </i></b>&quot; . So no audio is passing to 
PBX from from IP phone. Still IP phone able to get the incoming calls. 
Both PBX and IP are in same network. Hopping the earliest reply .<br><br>Thanks And Regards <br><br>Andrew Paul<br>