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<p>Also -> <br>
-Enable Early Offer (MTP if needed) on the SIP profile (CUCM 8.5+)
or Effort Early Offer (no MTP) on the SIP Profile (CUCM 10.5+)</p>
<p><a class="moz-txt-link-freetext" href="http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/10_5_1/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051_chapter_01.html#CUCM_TP_B8E6026A_00">http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/10_5_1/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051/CUCM_BK_CE15D2A0_00_cucm-release-notes-1051_chapter_01.html#CUCM_TP_B8E6026A_00</a><br>
</p>
<p>-MTP Required (any version)<br>
MTP Required limits you to a single codec in the outbound
offer and ties your max permitted calls to the number of MTP
Resources in your MRGL. <br>
</p>
Sreekanth's suggestion is the simplest to fix your specific problem,
but early offer usually works better overall with most Service
providers.<br>
<br>
HTH,<br>
--<br>
Adam<br>
<br>
<div class="moz-cite-prefix">On 5/23/2016 11:23 AM, Sreekanth
Narayanan (sreenara) wrote:<br>
</div>
<blockquote
cite="mid:9s5m3hpot3qdthnf6l531i7o.1464016977589@email.android.com"
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<div>This happens when the CUBE receives the prompt from the ITSP
over RTP and is not aware of where it has to stream this prompt
because CUCM does Delayed Offer by default. So Cube doesnt have
the phone's IP address.</div>
<div><br>
</div>
<div>You can fix this by forcing CUCM to send provisional
acknowöedgement by:</div>
<div>1. putting voice-class sip rel1xx require "100rel" on the
dial peers facing CUCM, and</div>
<div>2. Under sip profile of sip trunk facing CUBE, change the
Rel1xx parameter to Send Prack for all 1xx messages.</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div id="composer_signature">
<div style="font-size:85%; color:#575757">Sreekanth</div>
<div style="font-size:85%; color:#575757"><br>
</div>
<div style="font-size:85%; color:#575757">Sent from a phone.</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>-------- Original message --------</div>
<div>From: Asim Mekki Basheer <a class="moz-txt-link-rfc2396E" href="mailto:asim_323@hotmail.com"><asim_323@hotmail.com></a> </div>
<div>Date: 5/23/16 4:37 PM (GMT+05:30) </div>
<div>To: <a class="moz-txt-link-abbreviated" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a> </div>
<div>Subject: [cisco-voip] No ring back Tone For Switched off
Mobile </div>
<div><br>
</div>
<div>
<div dir="ltr">
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
<span style="outline:none">Hi</span></p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
<span style="outline:none"><br>
</span></p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
<span style="outline:none">The issue is, when call out to a
Switched off mobile phone, the IP Phone can't hear the
correct ringback tone either Busy Tone nor Service
Provider's Ringtone, it hears normal Ringback tone same as
when the mobile phone switched on instead</span></p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
The call flow:</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
IP Phone -- CUCM -- SIP Trunk-- CUBE --SIP Trunk -- Service
Provider .</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
<br>
</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
(CUCM 7.5, VGW (2921)</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
<br>
</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
</p>
<p style="outline:none; margin-bottom:10px;
color:rgb(51,51,51); font-family:Arial,sans-serif;
font-size:14.4px; background-color:rgb(255,255,255)">
Regards</p>
</div>
</div>
<br>
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