[cisco-voip] Emergency Calling from VoIP Remote Sites

[Lewis, Chris]

To add something to the mix on this, what are your thoughts on having remote users who have IP Phones at home, VPN tunnel to head office  and are registered to the Head Office UCM.  When they dial 911, the call would come from the Head Office rather than the users homes location.  They may have their own phone setup - as most people invariably do - but if they are at their desk then they will automatically use their IP Phone. Bearing in mind this is only a connection with an ASA to the Main Site - so no SRST etc - what are peoples thoughts here?

Our way around this is to put a legal disclaimer to the end users to ensure they have to explain their location if/when they are connected to the PSAP in an emergency.



From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Bas van der Veen
Sent: 11 January 2010 20:56
To: Walt Moody
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Emergency Calling from VoIP Remote Sites

> 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<mailto: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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