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Hi Walter,<br>
Lorenzo is right.<br>
Also NGCP is not able to generate ring back tone.<br>
183 should be generated by the callee, or if you have a 180, then
the caller (phone) should generate the tone internally.<br>
<br>
Regards,<br>
<br>
<br>
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<div class="moz-cite-prefix">On 06/22/2016 09:10 AM, Lorenzo Mangani
wrote:<br>
</div>
<blockquote
cite="mid:CAKN+pHaQ=1wT9W4DcEW-jFDZd2_oeS2_UG+Kvz489cgvUk1kig@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Walter,
<div><br>
</div>
<div>The ringing tone towards the user should be locally
generated by the UA/device receiving a 180 and involves no
early-media.</div>
<div>You should check what's up with your clients being unable
to do so as a first step troubleshooting this - if its a
soft-client it might be simply missing its local audio files,
etc.</div>
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<div class="gmail_quote">On Wed, Jun 22, 2016 at 8:57 AM,
Walter Klomp <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:walter@myrepublic.com.sg" target="_blank">walter@myrepublic.com.sg</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
<div>Hi,<br>
<font color="#5856d6"><br>
</font>Running CE 3.8.5:<br>
</div>
<div><br>
</div>
<div>Some PBX’es (including asterisk) have a broken
implementation of 180, and don’t generate ringback to
the endpoints.</div>
<div><br>
</div>
<div>When those users call off-net, all works well
because 183 comes back and the ringing is in-band. </div>
<div><br>
</div>
<div>When users call on-net to other users, they
typically get 180 back, and then silence until the
destination picks up the call. This is undesirable.</div>
<div><br>
</div>
<div>Is there a way to tweak Sipwise to generate
ringback and 183, instead of 180 ?</div>
<span class="HOEnZb"><font color="#888888">
<div><br>
</div>
<div>Walter.</div>
<div><br>
</div>
<br>
</font></span></div>
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