[Asterisk-Users] T1 and FX CPE

[Matthew Boehm]

Could you give an example of a "cheap 1-port FXO gateway" ?  And yes, the
Cisco phones do have an "Emergency Proxy" and a "Backup Proxy" option.

THanks,
Matthew
----- Original Message ----- 
From: "Nick Bachmann" <asterisk at not-real.org>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Friday, November 26, 2004 10:03 AM
Subject: Re: [Asterisk-Users] T1 and FX CPE


> Matthew Boehm wrote:
>
> >Hey guys,
> >  Looking for some suggestions here on hardware to use.  We have several
> >business customers wanting to start using our VoIP service. We will be
> >replacing their 10 year old Panisonic system with Cisco 7940 phones and a
> >T1. Problem is, they have to keep 1 POTS line for directory listing and
911
> >emergency failover.
> >  I would like suggestions on how to accomplish this. Our asterisk
cluster
> >is downtown so we can do the T1 between us and them easily. However, the
> >FX911 is the big problem. Lets say that the T1 line goes down and someone
> >tries to dial 911. Normally the call would go over the T1 down to
asterisk
> >cluster and go out over PRI or an FX card. But if the T1 is down, you
can't
> >do that. So, the POTS line needs to be plugged into something at the
> >customer site.
> >
> >
>
> How about getting a cheap 1-port FXO gateway and setting that to be the
> secondary SIP gateway on all the phones?  I'm pretty sure you can do
> that with the Ciscos.
>
> The other possibility, if their office isn't too large, is just to find
> a big red POTS phone and hook it up to the line.
>
> > There are a few Cisco routers that will accept both the T1 and the FX
but
> >we can't intercept a SIP call at the router. Right now, the only solution
we
> >can think of is putting an asterisk box at their location with an FX
card.
> >That way if the T1 goes down, they can still dial intra-office and dial
911
> >out the FX card.
> >
> >
>
> That's a valid option as well.
>
> Nick
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