[cisco-voip] Best practice for handling emergency calls

[Cristobal Priego]

Hello Matthew,

CER will work in the UK

CER is compatible with any emergency number (for example, 999 in UK, E1-1-2
across Europe)


Cris

2009/6/26 Matthew Melbourne <matt at melbourne.org.uk>

> I am interested in finding out what others do for handling emergency calls
> (specifically 999/112 in the UK), in centralised multi-site deployments. In
> the UK, DNs are registered on a database which provides the DN-to-address
> mapping. With Extension Mobility, users' numbers may move between sites so
> can't accurately reflect location. I have used one technique where the
> Device CSS is used to point towards a unique 'emergency' partition which
> contains a Route Pattern which presents a specific, registered, DN for that
> site by manipulating the outbound CLI (and the Line CSS effectively manages
> the Class of Service). However, for a large number of sites this quickly
> becomes a management issue, and any phone moves must have their Device CSS
> updated accordingly.
>
> A similar idea could be used for sending emergency calls out from a local
> FXO port at each site (rather than through centrally-located trunks).
> Similar CSS/Partition arrangements still may be required, although this may
> be easier to implement achieve with the use of local route groups in CUCM
> 7.x.
>
> Are there any other possible solutions; can CER operate in a non-US
> environment?
>
> Cheers,
>
> Matt
>
> --
> Matthew Melbourne
>
>
>
>
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