<div dir="ltr"><a href="https://wiki.freeswitch.org/wiki/Provider_Configuration:_Callcentric">https://wiki.freeswitch.org/wiki/Provider_Configuration:_Callcentric</a><div><br></div><div>The last bit is what you need.</div><div><br></div><div>
<p class=""><span class=""><!-- There are two other options such as generous, greedy, but scrooge seems to work with CallCentric --></span></p>
<p class=""><span class=""><param name="inbound-codec-negotiation" value="scrooge"/></span></p><p class=""><span class=""><br></span></p><p class=""><span class=""><br></span></p></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Mar 6, 2016 at 7:57 PM, Karl Schmidt <span dir="ltr"><<a href="mailto:karl@xtronics.com" target="_blank">karl@xtronics.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">OK - this bit seems likely:<br>
<br>
<br>
2016-03-06 14:48:04.240958 [WARNING] switch_core_media.c:2042 Asynchronous PTIME not supported,<br>
changing our end from 30 to 20<br>
2016-03-06 14:48:04.260851 [DEBUG] switch_core_media.c:2414 Changing Codec from PCMU@30ms@8000hz to<br>
PCMU@20ms@8000hz<br>
<br>
earlier in the log:<br>
Local SDP:<br>
v=0<br>
o=FreeSWITCH 1457269929 1457269930 IN IP4 192.168.1.200<br>
s=FreeSWITCH<br>
c=IN IP4 192.168.1.200<br>
t=0 0<br>
m=audio 27354 RTP/AVP 0 13<br>
a=rtpmap:0 PCMU/8000<br>
a=ptime:30<br>
a=sendrecv<br>
m=audio 27354 RTP/AVP 0 8 9 3 13<br>
a=rtpmap:0 PCMU/8000<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:9 G722/8000<br>
a=rtpmap:3 GSM/8000<br>
a=ptime:20<br>
a=sendrecv<br>
<br>
<br>
So I'm guessing that the PTIME bit is the cause - I found some earlier threads and tried<br>
un-commenting : rtp-autofix-timing=false in sip_profiles/internal.xml<br>
<br>
<br>
But no joy.<br>
<br>
Shouldn't the Asynchronous PTIME be negotiated before the ringing is set up?<br>
<br>
( Call audio is fine - just this ringtone phase on incoming calls )<br>
<br>
<br>
<br>
On 03/05/2016 03:04 PM, Michael Collins wrote:<br>
<span class="">><br>
><br>
> On Fri, Mar 4, 2016 at 3:56 PM, Karl Schmidt <<a href="mailto:karl@xtronics.com">karl@xtronics.com</a> <mailto:<a href="mailto:karl@xtronics.com">karl@xtronics.com</a>>> wrote:<br>
><br>
> When people call in (via callcentric) - they hear a stutter in the ringtone.<br>
><br>
> My understanding is that the ringtone is generated by freeswitch - looks like here:<br>
><br>
><br>
> <action application="set" data="transfer_ringback=${us-ring}"/><br>
><br>
><br>
> We are running the Debian release - 1.4.26~37-1~jessie+1<br>
><br>
> Could be this is a new 'feature'? Never sure.<br>
><br>
> Anyone else seeing this?<br>
><br>
> I'm thinking the ringtone might be using a different CODEX?<br>
><br>
> You can be absolutely certain of what's happening by taking a pcap of the SIP and RTP that are<br>
> leaving the box when the call comes in from Callcentric. Verify that you're sending a 183 w/SDP and<br>
> that there's actual early media leaving your system. If there is, analyze the RTP and see if the<br>
> stutter can be heard there. If it's PCMU then Wireshark is great for this kind of thing. (Lots of<br>
> info in Confluence on packet captures<br>
</span>> <<a href="https://freeswitch.org/confluence/display/FREESWITCH/Packet+Capture" rel="noreferrer" target="_blank">https://freeswitch.org/confluence/display/FREESWITCH/Packet+Capture</a>> and analysis<br>
> <<a href="https://freeswitch.org/confluence/display/FREESWITCH/Wireshark+How+To" rel="noreferrer" target="_blank">https://freeswitch.org/confluence/display/FREESWITCH/Wireshark+How+To</a>> if you need a reference.)<br>
<span class="">><br>
> The pcap analysis should at the very least help you narrow down where the stutter is coming in to<br>
> play and where to go next.<br>
><br>
> -MC<br>
<br>
<br>
<br>
--<br>
--------------------------------------------------------------------------------<br>
</span>Link to our website and get free US-48 shipping on your next order.<br>
<span class=""><br>
Karl Schmidt EMail <a href="mailto:Karl@xtronics.com">Karl@xtronics.com</a><br>
Transtronics, Inc. WEB <a href="https://secure.transtronics.com" rel="noreferrer" target="_blank">https://secure.transtronics.com</a><br>
3209 West 9th Street Ph <a href="tel:%28785%29%20841-3089" value="+17858413089">(785) 841-3089</a><br>
Lawrence, KS 66049 FAX <a href="tel:%28785%29%20841-3089" value="+17858413089">(785) 841-3089</a><br>
<br>
</span>As a bright friend explained as to why he doesn't watch any TV;<br>
All we have is time - best not to waste it. kps<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">
<p><font face="courier new, monospace"><b><i><font size="4">Brian West</font></i></b><br><span style="font-size:x-small"><a href="mailto:brian@freeswitch.org" target="_blank">brian@freeswitch.org</a></span></font></p>
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