If you are using newer (doubango based) version of WebRTC2SIP gateway then you don't need to do anything, it will take care of both signalling and media. However you might need media breaker module for transcoding. Though FS supports both ISAC and VP8 codecs (for audio and video respectively) but i am not sure if they are compatible / working with Chrome, since chrome has lot of development going around and they make so many changes on daily basis, resulting in every new version pretty much incompatible with older ones and so on.<div>
<br></div><div>Please make sure you follow this wiki,</div><div><br></div><div><a href="http://code.google.com/p/webrtc2sip/wiki/Building_Source_v2_0">http://code.google.com/p/webrtc2sip/wiki/Building_Source_v2_0</a><br><div>
<br></div><div>Thank you.</div><div><br><br><div class="gmail_quote">On Wed, Dec 12, 2012 at 4:04 AM, Joel Rosenfield <span dir="ltr"><<a href="mailto:joelrosenfield@yahoo.com" target="_blank">joelrosenfield@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:10pt;font-family:times new roman,new york,times,serif"><div><div><font face="times new roman, new york, times, serif">In the default FreeSWITCH configuration, I used the webrtc2sip proxy to connect a Chrome 23 client to user 1001. The SIP signaling is fine for REGISTER and INVITE, however FreeSWITCH returns 488 Not Acceptable Here.</font></div>
<div style="background-color:transparent"><font>I saw a post on the </font><a rel="nofollow" href="https://groups.google.com/forum/#!forum/doubango" style="color:rgb(102,17,204);outline:0px;margin:0px;padding:0px;border:0px;vertical-align:baseline;font-family:Arial,Helvetica,sans-serif;white-space:nowrap" target="_blank">discuss-doubango</a> Google Groups list from July 20 that said:</div>
<div style="background-color:transparent"><br></div><div style="background-color:transparent;font-size:16px"><span style="white-space:pre-wrap"> </span>"<span style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif;font-size:13px">The problem is not with the crypto its with the a=crypto being inside the AVP vs SAVP (denoting secure)</span></div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><span style="white-space:pre-wrap"> </span>see <a rel="nofollow" href="http://jira.freeswitch.org/browse/FS-636" style="color:rgb(102,17,204);outline:0px;margin:0px;padding:0px;border:0px;vertical-align:baseline" target="_blank">http://jira.freeswitch. org/browse/FS-636</a></div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
<span style="white-space:pre-wrap"> </span>I am willing to lift this restriction or at least make it configurable since the alternative is you must send a double sized sdp with AVP for non secure stuff and SAVP for the secure."</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
Is there something that I need to configure on FreeSWITCH to remove this restriction? Or, what should be different in the SDP offer from webrtc2sip so that FreeSWITCH will accept it?</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
Below is the output from the FreeSWITCH version command, the SDP offer from webrtc2sip, and FreeSWITCH error message.</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
<br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">Thanks,</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
- Joel</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif">
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">version</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
<br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">FreeSWITCH Version 1.3.8b+git~20121205T191750Z~ 924c524197 (git 924c524 2012-12-05 19:17:50Z)</div></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
. . . . </div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> ----------------------------- ------------------------------ -------------</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
recv 1931 bytes from udp/[10.159.25.56]:10060 at 22:42:51.414083:</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> ----------------------------- ------------------------------ -------------</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> INVITE sip:9195@ . . . </div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> . . . </div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
User-Agent: webrtc2sip Media Server 2.0<br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> P-Preferred-Identity: <sip:webrtc2sip></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
<br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> v=0</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
o=doubango 1983 678901 IN IP4 10.159.25.56</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> s=-</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> c=IN IP4 10.159.25.56</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> t=0 0</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> m=audio 60326 RTP/AVP 0 8 101</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
c=IN IP4 10.159.25.56</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline;color:rgb(80,0,80)"><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=ptime:20</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
a=silenceSupp:off - - - -</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=rtpmap:0 PCMU/8000/1</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=rtpmap:8 PCMA/8000/1</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=rtpmap:101 telephone-event/8000/1</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=fmtp:101 0-16</div></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
a=tcap:1 RTP/SAVP</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=pcfg:1 t=1</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=sendrecv</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
a=crypto:1
AES_CM_128_HMAC_SHA1_80 inline: CG0ol5gUQjNxOXyMhXSIV2RltFltbx 99IkjHmXsT</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:aiZ33ixxaTy5dX5iy72n/ OAORs8lIezYKhuzti6G</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=rtcp-mux</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=ssrc:2783445458 cname:ldjWoB60jbyQlR6e</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
a=ssrc:2783445458 mslabel:6994f7d1-6ce9-4fbd- acfd-84e5131ca2e2</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=ssrc:2783445458 label:Doubango</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
a=ice-ufrag:kWutfVwWe7bWeB4</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=ice-pwd: ziAr5WnKhzu1KsZsMinJw</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=mid:audio</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=candidate:35wALsfKp 1 udp 2130706431 10.159.25.56 60326 typ host</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=candidate:35wALsfKp 2 udp 2130706430 10.159.25.56 60327 typ host</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=candidate:srflx35wA 2 udp 1694498814 107.21.197.144 60327 typ srflx</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> a=candidate:srflx35wA 1 udp 1694498815 107.21.197.144 60326 typ srflx</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
----------------------------- ------------------------------ -------------</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">send 400 bytes to udp/[10.159.25.56]:10060 at 22:42:51.414473:</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> ----------------------------- ------------------------------ -------------</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
SIP/2.0 100 Trying</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> . . . </div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> ----------------------------- ------------------------------ -------------</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">2012-12-11 22:42:51.734425 [INFO] mod_dialplan_xml.c:498 Processing 1001
<1001>->9195 in context default</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">-> 2012-12-11 22:42:51.894429 [ERR] sofia_glue.c:4922 a=crypto in RTP/AVP, refer to rfc3711</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
2012-12-11 22:42:51.894429 [NOTICE] switch_channel.c:3484 Hangup sofia/internal/1001@. . . </div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> [CS_EXECUTE] [INCOMPATIBLE_DESTINATION]</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
send 924 bytes to udp/[10.159.25.56]:10060 at 22:42:52.054746:</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> ----------------------------- ------------------------------ -------------</div>
<div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> SIP/2.0 488 Not
Acceptable Here</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline"> Via: SIP/2.0/UDP 10.159.25.56:10060;branch= z9hG4bK1356314285436;rport= 10060</div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">
<br></div><div style="margin:0px;padding:0px;border:0px;vertical-align:baseline">NOTE: I hacked the webrtc2sip to send "a=tcap:1 RTP/SAVP" rather than "a=tcap:1 RTP/SAVPF", but as you can see, no luck; same result either way.</div>
<div><br></div></div></div></div></div><br>_________________________________________________________________________<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">Muhammad Shahzad</span><br style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">------------------------------</span><span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">-----</span><br style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">CISCO Rich Media Communication Specialist (CRMCS)</span><br style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">CISCO Certified Network Associate (CCNA)</span><br style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">Cell: +49 176 99 83 10 85</span><br style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
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