It seems there is simply no solution to incoming failover. Your
incoming DID is as reliable as 1/(<reliability of carriers
PRI>+<reliability of carriers internet link>+<reliability
of carriers equipment>. There is one more variable here than as in
direct PSTN connection.<br>
<br>
Over the past year and a half I have probably gone through close to 10
origination providers and all of them have had problems at some point
or another. If your incoming calls are critical, put them on a PSTN, as
simple as that.<br>
<br>
ScriptHead<br>
<br>
<br><br><div><span class="gmail_quote">On 11/7/05, <b class="gmail_sendername"><a href="mailto:tmassey@obscorp.com">tmassey@obscorp.com</a></b> <<a href="mailto:tmassey@obscorp.com">tmassey@obscorp.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br><tt><font size="2"><a href="mailto:asterisk-biz-bounces@lists.digium.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">asterisk-biz-bounces@lists.digium.com</a> wrote on 11/07/2005
09:03:20 AM:<span class="q"><br>
<br></span></font></tt><br>
<br><tt><font size="2">But that only helps you if they're able to receive
the calls from the PSTN. It's the same as having redundant Internet
connnections from a single provider. Better than nothing, but still
not true redundancy.</font></tt>
<br>
<br><tt><font size="2">Of course, I don't have redundancy from SBC, either.
But I don't get 5 9's from VoIP!</font></tt>
<br>
<br>
</blockquote></div><br>