<div dir="ltr"><div><div>SIP Supports all possible mechanisms of fax transmission, but yes, it depends on ITSP as well, that what method they are supporting at their end device. <br><br></div>Second most viable option is to use MGCP, for VG224s where fax and analog devices would terminate. <br>
<br></div>SCCP is easier to implement , but have only NSE based fax mechanism, which can create issue, if fax calls are sent over SIP trunks to PSTN, as NSE is cisco protocol, which works best when last IP hop is cisco router. <br>
<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jul 29, 2013 at 8:27 PM, Kenneth Hayes <span dir="ltr"><<a href="mailto:kennethwhayes@gmail.com" target="_blank">kennethwhayes@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>In my environment we have issues faxing via SIP with our carrier.<br><br>Sent from my iPhone</div>
<div><div class="h5"><div><br>On Jul 29, 2013, at 9:03 AM, Eric Pedersen <<a href="mailto:PedersenE@bennettjones.com" target="_blank">PedersenE@bennettjones.com</a>> wrote:<br>
<br></div><blockquote type="cite"><div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">What T.38 issues are you referring to? We haven't had any problems.
</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<div>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Kenneth Hayes [<a href="mailto:kennethwhayes@gmail.com" target="_blank">mailto:kennethwhayes@gmail.com</a>]
<br>
<b>Sent:</b> 26 July 2013 3:47 PM<br>
<b>To:</b> Jason Aarons (AM)<br>
<b>Cc:</b> Eric Pedersen; <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a> VOIP<br>
<b>Subject:</b> Re: [cisco-voip] TDM to IP VG's SIP, H323, MGCP</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">With the VG224's instead of MGCP wouldn't it be easier to do it SCCP vs MGCP because of T.38 issues with SIP?</p>
</div>
<div>
<p class="MsoNormal"><br>
<br>
Sent from my iPad</p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Jul 26, 2013, at 4:36 PM, "Jason Aarons (AM)" <<a href="mailto:jason.aarons@dimensiondata.com" target="_blank">jason.aarons@dimensiondata.com</a>> wrote:</p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I would agree SIP where possible end to end creates the least amount of issues. You might have some VG224s that want Shared Lines with SIP Phones requiring
MGCP on the VG224.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<div>
<div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> cisco-voip [<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">mailto:cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Kenneth Hayes<br>
<b>Sent:</b> Friday, July 26, 2013 3:14 PM<br>
<b>To:</b> Eric Pedersen<br>
<b>Cc:</b> <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a> VOIP<br>
<b>Subject:</b> Re: [cisco-voip] TDM to IP VG's SIP, H323, MGCP</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal" style="margin-bottom:12.0pt"> </p>
<div>
<p class="MsoNormal">I agree. SIP between your UC apps, and gateways is what I recommend. In some cases you might need to use SCCP protocol but for the major stuff SIP is what I recommend.<br>
<br>
Sent from my iPad</p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Jul 26, 2013, at 9:22 AM, Eric Pedersen <<a href="mailto:PedersenE@bennettjones.com" target="_blank">PedersenE@bennettjones.com</a>> wrote:</p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">SIP works very well in CM 9.1. I don't know of any reason to use H.323 between CM and PRI gateways anymore. MGCP still provides the simplest configuration
but you lose all the PRI calls if the connection between the gateway and the CM it's registered to drops for some reason.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I suggest using the same protocol for all your gateways to reduce the likelihood of problems with things like DTMF relay and faxes.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip [<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">mailto:cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Candese Perez<br>
<b>Sent:</b> 25 July 2013 8:07 AM<br>
<b>To:</b> <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a> VOIP<br>
<b>Subject:</b> [cisco-voip] TDM to IP VG's SIP, H323, MGCP</span></p>
</div>
<p class="MsoNormal"> </p>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hello All, <br>
I am working on a new CUCM 9.1 deployment with several branch offices using PRI's.
</p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Reading through the SRND and a few messages on this board, I am still not sure which protocol to use for these gateways.
</p>
</div>
<div>
<p class="MsoNormal">I know SIP is really prevalent now, and is much easier to troubleshoot, but not sure if there are any issues in terms of features.
</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Additionally, this deployment will involve several VG 224's for fax, and analog IVR components.
</p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Does anyone have any suggestions either way SIP, H323, or MGCP or particular features that work better/worse using a particular protocol?</p>
</div>
<div>
<p class="MsoNormal">Thanks!</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
</div>
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