Your remark about digest authentication explains why I have had difficulties. I was considering merging SIP interconnects with digest authenticated SIP trunks in a single gateway. I would prefer not to use a B2BUA as a PSTN gateway in order to avoid carrier media where possible. I suspect it might be better to separate out any digest authenticated SIP trunks to a B2BUA just for this.<br>
<br>My main reason for wishing to run a back-end gateway is to simplify our own network and to be able to reconcile against third-party CDRs all in one place.<br><br>Can you point me to any documentation for running Kamailio as a PSTN gateway?<br>
<br>Thanks<br>Rob<br><br><div class="gmail_quote">On 3 April 2012 14:00, Klaus Darilion <span dir="ltr">&lt;<a href="mailto:klaus.mailinglists@pernau.at">klaus.mailinglists@pernau.at</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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It depends on what features you need facing the gateway providers. Eg. if the gateway provider uses digest authentication then you may run into problems with Kamailio. Many people use a B2BUA as &quot;fake&quot; gateway to have full control over the call (e.g. Asterisk, sems, sippy)<br>

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regards<span class="HOEnZb"><font color="#888888"><br>
Klaus<br>
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