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Not necessarily.<br>
<br>
Hold/transfer does place the call on hold. That works fine unless one
of the call legs meets the following criteria in 4.1:<br>
<br>
1) is h323 to a device that is not h323v2 compliant with empty
capabilities set (ECS) support<br>
2) use the CM SIP trunk<br>
<br>
If any call leg uses those then MTP will be required. Otherwise,
generally, MTP should not be required.<br>
<br>
Transfers typically drop calls when:<br>
1) there is a codec mismatch between the ingress gateway and the MoH
server. The codec negotation failure usually puts the call in a state
where it cannot be resumed or it just immediately drops<br>
2) there is an error closing/opening media channels. This happens with
H.323 endpoints that do not support ECS. It happens with SIP endpoints
that do not handle the re-invite. It happens when there is a network
condition that delays or interrupts the control channel (h323, sip,
mgcp signaling) during the media redirection.<br>
<br>
/Wes<br>
<br>
Jonathan Charles wrote:
<blockquote
cite="mid:5d093f9a0712061104u7874a59eg1660d2eb8084c2c5@mail.gmail.com"
type="cite">
<pre wrap="">Because when you hit the transfer key, the call is placed on hold, to
do that, you need an MTP.
Jonathan
On Dec 6, 2007 12:53 PM, Voice Noob <a class="moz-txt-link-rfc2396E" href="mailto:voicenoob@gmail.com"><voicenoob@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Why would he need an MTP to transfer a call?
On Dec 6, 2007 12:47 PM, Jonathan Charles <a class="moz-txt-link-rfc2396E" href="mailto:jonvoip@gmail.com"><jonvoip@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Is there an MRGL assigned to the device pool? Cuz you need an MTP to
</pre>
</blockquote>
<pre wrap="">transfer...
</pre>
<blockquote type="cite">
<pre wrap="">
Jonathan
On Dec 6, 2007 10:59 AM, Nick <a class="moz-txt-link-rfc2396E" href="mailto:csvoip@googlemail.com"><csvoip@googlemail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Has anyone come across an issue before where when you press the transfer
button the call gets dropped, I have one user who claims that when one
particular cell phone number calls in and she tried to transfer she
</pre>
</blockquote>
</blockquote>
<pre wrap="">loses
</pre>
<blockquote type="cite">
<blockquote type="cite">
<pre wrap="">the call.
This is on a 7960 Version: 7.2 (4.0)
CCM 4.1(3) sr3c
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</pre>
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