you can also set some kind of authentication on the extensions for example ask for a pin to dialout. etc<br><br><div class="gmail_quote">On Thu, Feb 24, 2011 at 6:51 PM, Daniel Tryba <span dir="ltr"><<a href="mailto:daniel@tryba.nl">daniel@tryba.nl</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">On Thu, Feb 24, 2011 at 11:38:17AM +0000, Roger Burton West wrote:<br>
> The relevant part of my setup is something like:<br>
><br>
> SIP phones -> local server -> remote server -> SIP-to-PSTN provider<br>
><br>
> I want _some_ of the SIP phones on the local server to be able to get<br>
> access to SIP-to-PSTN, but not all of them. The local-to-remote<br>
> connection is IAX2 over VPN.<br>
<br>
</div>The way I would to this is by blocking them on the localserver (with<br>
different contexts). An other solution would be to set prefixes on the<br>
extension when dialing from local to remote and use these to filter, not<br>
very elegant but works over any transport. I use this to do multitenant<br>
billing on the remote server in places where I only want 1 IAX trunk.<br>
Whether this is effective depends on your control of the local server.<br>
<br>
--<br>
<font color="#888888"><br>
Daniel Tryba<br>
</font><div><div></div><div class="h5"><br>
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