RTCP port mapping does't use source port

[nicky]

1. Brekeke Product Name and version:
Brekeke SIP Server , Version 3.0.6.3 Evaluation
2. Java version:
java 1.6.0_24
3. OS type and the version:
Ubuntu 10.6
4. UA (phone), gateway or other hardware/software involved:
no
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :
Pattern 4
6. Your problem:

I had set the [Configuration] -> [RTP]->[source port].
I observe the RTCP do not be pass through using the NAT original source port instead of sdp port.
But RTP work fine. It will use the NAT source port mapping.


for example , the sdp show the rtp port is 100 , but actual the NAT mapping rtp port to 3000 , and rtcp to 30001.
The Brekeke relay will send the remote rtp to 3000 but rtcp to 101 (rtp+1)
So , I always receive the RTP but without any RTCP from remote data.

Does have any configuration to fix it?

[james]

Hi

In the above case, which port is the RTCP's mapping port? (Is it 30001?)

Do you have any packets trace?
If possible let you share a packet trace at http://www.pcapr.net/

[nicky]

[quote="james"]Hi

In the above case, which port is the RTCP's mapping port? (Is it 30001?)

Yes, in this case the NAT change RTCP to 30001
Do you have any packets trace?
If possible let you share a packet trace at http://www.pcapr.net/[/quote]

I have send register letter , but no response.
You can give me the mail or share space , I will send to you.
Thanks.