Hello,

Thanks for nice support…

When kamalio is not working at some DNS with audio call then how we can know what is issue at client side?

Can you give us any online communication like Skype or hangout ID?

So we can check it is server or client  side issue?

Thanks

From: Daniel-Constantin Mierla [mailto:miconda@gmail.com]
Sent: Friday, March 20, 2015 5:24 PM
To: Yogendra Gupta; 'Kamailio (SER) - Users Mailing List'
Subject: Re: [SR-Users] Kamalio call issue

Hello,

again, if the SIP messages don't get to kamailio box, then the problem is on client side, not on server side.

If the request gets to kamailio and cannot do dns requests or they don't resolve, you will see a sip reply from kamailio.

There is not an issue that can be revealed by the config of kamailio. On the client side, try to use tools like host, dig and see what happens with dns requests. Also, use there ngrep to see if there are sip packets sent out of that box.

Cheers,
Daniel

On 20/03/15 11:20, Yogendra Gupta wrote:

Hello,

When we can change our DNS IP then it works with following :

U 2015/03/20 10:06:06.504009 23.253.110.48:5060 -> 202.157.76.21:64051

ACK sip:tester2@192.168.0.100:5060;transport=udp;registering_acc=23_253_110_48SIP/2.0.

Call-ID: 143610160aa023568302b9c999b79f45@0:0:0:0:0:0:0:0.

CSeq: 2 ACK.

Via: SIP/2.0/UDP 23.253.110.48;branch=z9hG4bK7.601b877c92120368c17b3c0da0802af6.0.

Via: SIP/2.0/UDP 192.168.0.217:5060;rport=63789;received=202.157.76.21;branch=z9hG4bK-353035-5aa153400d9ce60dfc573738a4b55232.

From: "tester1" <sip:tester1@23.253.110.48>;tag=3fdb1d0f.

To: "tester2" <sip:tester2@23.253.110.48>;tag=31532119.

Max-Forwards: 69.

Contact: "tester1" <sip:tester1@192.168.0.217:5060;transport=udp;registering_acc=23_253_110_48;alias=202.157.76.21~63789~1>.

User-Agent: Jitsi2.6.5390Windows 7.

Content-Length: 0.

But when we used another DNS IP (internet) and call then it  showing only initialize..

If it has firewall issue then it will not work at all DNS IPs.

I have attached before my config file for kamalio.

Can you tell me what can be issue that it works at some DNS IP and not at all?

Thanks

From: Daniel-Constantin Mierla [mailto:miconda@gmail.com]
Sent: Friday, March 20, 2015 2:14 AM
To: Yogendra Gupta; 'Kamailio (SER) - Users Mailing List'
Subject: Re: [SR-Users] Kamalio call issue

These are replies to INVITE requests, but if you see them, the INVITE passed through the server as well.

If you are not aware of a firewall, then perhaps you don't have one unless is a default installation with it enabled or one on the network.

I suggest you do sip tracing on the client machine to see if the invite requests leave to the proper IP.

Ultimately can be also a problem caused by a NAT router with ALG, if the client is behind such device.

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - http://www.kamailioworld.com