Hi Users,
I'm cracking my head with audio problem..
I installed openser 1.0.1 in Linux  + freeRadius + RtpProxy + mysql

When I make a call ( which are behind the nat  ) the audio is not hearing and audio signal of  Softphone is blinking up and down..
In  Debug output  I didn't see any 
     SIP reply  or sip request  for ACK..
I thing so that, If  client nehind the NAT didn't receive the ACK. this may be problem...

SIP/2.0 200 Ok
v: SIP/2.0/UDP 192.168.2.21:5060;received=61.17.248.68;rport=4007;branch=z9hG4bK9615579CC17F47929BB2FEF3F33F4BFC
f: ravi <sip:1003@24.98.157.209>;tag=145161195
t: <sip:104@24.98.157.209>;tag=641313084
m: <sip:104@61.17.248.68:5060>
Record-Route: <sip:192.168.2.4;ftag=145161195;lr=on>
i: 839BBA5C-84B5-4D09-ACF1-B19FA0EB3C59@192.168.2.21
CSeq: 54483 INVITE
c: application/sdp
Server: X-Lite release 1105x
Content-Length: 166

v=0
o=104 86794725 86799157 IN IP4 192.168.2.20
s=X-Lite
c=IN IP4 192.168.2.4
t=0 0
m=audio 35034 RTP/AVP 1
a=rtpmap:1 pcmu/8000
a=sendrecv
a=nortpproxy:yes    --------------------- > this is problem

 openSER server didn't  get request   ACK  I think So..

What may the problem... plz help me

--
Thanks and Regards w ith cheers                                                     
Sunkara Ravi Prakash  (Voip Developer)                                          
Hyperion Technology                                                                            
www.hyperion-tech.com