assign a port for RTCP relay

STeven · Post by **STeven** » Tue Oct 06, 2009 5:22 am

1. Brekeke Product Name and version:
Brekeke SIP Server 2.3.7.4
2. Java version:
1.6.0_15
3. OS type and the version:
Linux 2.6
4. UA (phone), gateway or other hardware/software involved:
PJSIP
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/ ... terns.html :
Pattern
6. Your problem:
Sometimes my router will use different RTCP for Brekeke.
e.g. RTP port: 10000
RTCP port: 10002 (is not RTP+1)
Then the Brekeke RTP always relay to 10001.
I can put the real RTCP port in SDP. So, I can tell Brekeke SIP Server.
Can I assign the RTCP port in the dailplan or using the other way?

lakeview · Post by **lakeview** » Tue Oct 06, 2009 5:48 pm

STeven,

How do you specify RTCP port number in SDP?
Can you paste a SDP here?

STeven · Post by **STeven** » Wed Oct 07, 2009 2:23 am

lakeview wrote:STeven,

How do you specify RTCP port number in SDP?
Can you paste a SDP here?

Hi lakeview,

a=rtcp:59421 IN IP4 xxx.xxx.xxx.xxx

It's the standard from RFC 3605.
I think Brekeke can't identify the message.

lakeview · Post by **lakeview** » Thu Oct 08, 2009 7:37 pm

Yeah.. It seems a bug.

Can you tune RTCP port at your side?

lakeview · Post by **lakeview** » Thu Oct 08, 2009 7:39 pm

or..
disable RTP-relay at SIP Server if it is not NAT environment.

STeven · Post by **STeven** » Sat Oct 10, 2009 6:07 am

Thanks! But I can't control the NAT mapping and disable the RTP relay...the RTP relay is so important for VoIP...

I want to suggest some customers to use Brekeke SIP Server.
But we don't know their router's action. I think it's hard to control
the NAT mapping.

Hope someone can help the issue...

Harold · Post by **Harold** » Sun Oct 11, 2009 9:38 pm

who specify "a=rtcp" in SDP?
Is it PJSIP? Is it your router?

STeven · Post by **STeven** » Tue Oct 13, 2009 8:35 am

PJSIP is a sip stack.

Please see http://www.pjsip.org/