[Asterisk-Dev] Zap OK?

[Steven Critchfield]

On Tue, 2005-10-04 at 20:11 +0300, Tzafrir Cohen wrote:
> On Tue, Oct 04, 2005 at 10:07:20AM -0500, Steven Critchfield wrote:
> > On Tue, 2005-10-04 at 16:46 +0200, Sergio Serrano wrote:
> > > In this moment, we have thought do the next:
> > > 
> > > 	1)Linux-HA that control asterisk is OK
> > > 	2)Do a new application that checks SIP and IAX like sipsack and
> > > checks Zap Lines.If some of these check fails, this application sutdown
> > > automatically and linux-HA must control this application. So with linux-HA,
> > > asterisk and this new applpication we can have a robust asterisk-HA system.
> > 
> > I can see Linux-HA helping in IAX and SIP, or any VoIP protocol where
> > you can step in without a wiring change and act like the downed machine.
> > I don't think you will be as happy with it using Zap Channels or any
> > other phone lines that rely on the wire connection.
> 
> So a different hardware is needed here?
> 
> Something like ISDNGuard?
> http://www.junghanns.net/en/ISDNguard_produkt.html

Yes, that is what is needed if the asterisk side of things has problems
and you can detect it switch the lines. 

But as I have said before, there is a failure state where asterisk is
up, the layer 1 is up and functioning, but yet no calls are being
processed. That will require you to place a call and possibly receive a
call so you can test for that failure mode.
-- 
Steven Critchfield <critch at basesys.com>