[SR-Users] One sided or no voice issue with websockets

[Kamrul Khan]

Hi Gonzalo,

Thanks a lot for your reply. I took a closer look at the issue and I guess we figured out the reason why this is happening. But, still couldnt get the solution unfortunately.  Our topology is like this:

sipml5(behind NAT) -> (Public Interface)kamailio(Private Interface) <---->  Freeswitch

So, when we are sending calls to to freeswitch via Kamailio; Freeswitch is updating the SDP with its private IP. Therefore the client tries to send RTPs to the private IP of freeswitch. We have rtpproxy installed in our Kamailio server. We tried bunch of stuffs to solve the issue like ICE handling with rtpengine but nothing worked out.  Can you please give me some more advise that I may try ?

Thanks in advanced.



Date: Wed, 22 Oct 2014 09:53:58 -0700
Subject: Re: [SR-Users] One sided or no voice issue with websockets
From: gascagonzalo at gmail.com
To: sr-users at lists.sip-router.org
CC: dodul at live.com

Hi Kamrul,
Can you provide more details about the call flow:It is important to understand the following:-Topology-Web browser models and versions (Chrome vs FireFox)-Kamailio version
When you say:"It works perfectly within local network"
Please take a look at ICE negotiation.
I have sipml5 placing calls to Asterisk via Kamilio working without any issues.
sipml5 ---> kamailio --> fs --> asterisk    ------------------ media ------------>
Please provide logs:sipml5 (java console)kamailio logs(If possible browser logs)
-Gonzalo

On Wed, Oct 22, 2014 at 9:12 AM, Amit Patkar <amit at avhan.com> wrote:
Please check ICE server settings. Your browser may be publishing local IP. One way voice or no voice is typical case when client is behind firewall.

Regards,
Amit Patkar

dodul <dodul at live.com> wrote:


Hi



I didn't get any responses from anyone regarding my issue.  Can someone please give me some clue what I can do? Or if more information is needed please let  know so that I can provide.  







Sent from my Samsung Galaxy smartphone.






-------- Original message --------

From: Kamrul Khan <dodul at live.com> 

Date:10-21-2014 17:45 (GMT-06:00) 

To: sr-users at lists.sip-router.org 

Cc: 

Subject: [SR-Users] One sided or no voice issue with websockets 





Hi,



We have a setup with sipml5 to kamailio. It works perfectly within local network. In public network the signaling establishes perfectly, but most of the time we hear no voice, sometimes we hear one sided voice and in rare cases we hear voice from both sides.
 To fix this issue we configured our nathandler like the below: But, still no luck. Any idea how to fix this? Please HELP!!!



modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")

modparam("nathelper", "nortpproxy_str", "a=sdpmangled:yes\r\n")

.

.

.

route {

.

.

 if (nat_uac_test("115")) {

                if(nat_uac_test("64"))

                    force_rport();

                }

                if (method=="REGISTER") {

                    fix_nated_register();

                    add_rcv_param();

                } else {

                    fix_nated_contact();

                    if(nat_uac_test("64")){

                        if (!add_contact_alias()) {

                            xlog("L_ERR", "Error aliasing contact <$ct>\n");

                            sl_send_reply("400", "Bad Request");

                            exit;

                        }

                    } else {

                        add_rcv_param();

                    }

                }

            }

.

.



onreply_route {

    if (nat_uac_test(64)) {

            add_contact_alias();

        }

.

.

}








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