[cisco-voip] Emergency Calling from VoIP Remote Sites

[Bas van der Veen]

> Is the possibility that the WAN will be broken at the exact time
> someone needs emergency help (and can't find a cell phone) great
> enough to justify the additional facilities?

Yes. Murphy might pay you a visit, why take the risk?

We combined the SRST and emergency call functionality and have SRST gateways
at all remote locations, connected to PRI's or single ISDN lines.

On Fri, Jan 8, 2010 at 10:44 PM, Walt Moody <moody at arizona.edu> wrote:

> Group,
>
> We have several sites which are remote from the main campus but are
> "local" in as much as they are located within Qwest's Tucson rate
> center.  The ones that are equipped with Voice over IP get all of
> their connectivity and DID extension numbers from the CallManager
> clusters on campus.  The CallManager clusters are equipped with Cisco
> Emergency Responders so that all 911 calls are routed to the proper
> PSAPs with the proper emergency response address as set up in the
> Intrado database.
>
> When everything is working properly, all 911 calls go where they're
> supposed to go and have the correct response location in the PSAP's
> automatic location identifier field.
>
> A remote site user asked "Will I be able to call 911 from my location
> with my VoIP phone when the WAN is down?" and our answer is "No."
>
> So the question for the group:  Is it your custom to provide facilities
> (phone line, gateway interface interface card, DSPs, SRST software,
> etc.) solely to allow access to 911 in the event of a WAN failure?
>
> Is the possibility that the WAN will be broken at the exact time
> someone needs emergency help (and can't find a cell phone) great
> enough to justify the additional facilities?
>
> Thanks in advance.
>
> -walt
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