<div dir="auto">In case the local telecom wants to send/receive media to/from specific IPs and this can’t be provided by twilio, you will need to look into rtpengine/rtpproxy in order to relay the media as well.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 22 Jul 2021 at 03:46, Fred Posner <<a href="mailto:fred@palner.com">fred@palner.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Hi Nick,<div><br></div><div>This type of use case would be perfect for Kamailio. You can use many of the available modules such as dispatcher, drouting, etc to accomplish this (or even just a simple call in the request route). </div><div><br></div><div>Kamailio just handles SIP, so unless you use an program such as rtpengine, no media is relayed— it would flow directly from the carrier to twilio. </div><div><br><div dir="ltr">-- Fred<div><span style="background-color:rgba(255,255,255,0)">(via mobile)<br></span><div><span style="background-color:rgba(255,255,255,0)">Matrix: @fred:<a href="http://matrix.lod.com" target="_blank">matrix.lod.com</a></span></div></div><div><br></div></div><div dir="ltr"><br><blockquote type="cite">On Jul 21, 2021, at 9:22 PM, Nick Hurlburt <<a href="mailto:nick@techmatters.org" target="_blank">nick@techmatters.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
</div></blockquote></div></div><div dir="auto"><div><blockquote type="cite"><div dir="ltr">
<div>
<p class="MsoNormal">Hello all,</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">My name is Nick Hurlburt, and work with a nonprofit tech organization that provides a software platform for child helplines around the world. I am a new user to Kamailio, and I'm interested in figuring out if my use case is appropriate,
getting some tips on how to go about it, and possibly enlisting some expert help.</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Our service is built on top of Twilio, but we are working in some countries where Twilio doesn't have phone numbers. So in those areas, we are working with local telecoms on ways to integrate using a SIP connection. In one particular
example, the telecom company can send SIP INVITEs but can only address them to a static IP. However, Twilio needs to receive the invite addressed to a fully-qualified domain name (eg, <a href="http://example-setup.sip.twilio.com" target="_blank">example-setup.sip.twilio.com</a>). The idea arose to use Kamailio as a proxy
to accept the static IP-addressed request and then rewrite the request to pass it along to a domain name. Then once the connection is established between the two endpoints, the media can flow directly between them.</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I have a software engineering background but still coming up to speed when it comes to VoIP technology. I'd be interested in:</p>
<p class="MsoNormal">- does this sound like a good use case for Kamailio?</p>
<p class="MsoNormal">- is there any specific documentation you could point me to for this use case? (I have been looking at the Kamailio documentation, but a quick pointer could save a lot of time in digging through it)</p>
<p class="MsoNormal">- if anyone from the community would be open to helping us develop a prototype/proof-of-concept instance of this, especially if you're open to contributing to a nonprofit on a volunteer or discounted rate, I'd love to talk more</p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thank you,<br>
Nick</p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
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</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Regards,</div><div><br></div>David Villasmil<div>email: <a href="mailto:david.villasmil.work@gmail.com" target="_blank">david.villasmil.work@gmail.com</a></div><div>phone: +34669448337</div></div></div>