On Mon, Feb 9, 2009 at 10:46 AM, Carolyn Beeton <[email protected]> wrote:
>
>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of M.
>> Ranganathan
>> Sent: Sunday, February 08, 2009 11:56 AM
>> To: sipx-dev
>> Subject: [sipX-dev] SIPCONNECT Requirement : Emergency
>> Services dialing
>>
>> Hello,
>>
>> Per the requirements of SIPCONNECT,
>> I need to support the following behavior in sipx for dialing
>> emergency services.
>> How can I determine that the outbound call to the ITSP is an
>> emergency call based upon the INVITE sent to sipxbridge from
>> the sipx proxy server?
>>
>> Thanks
>>
>> --------------------------------------------------------------
>> -----------------------------
>> 'To:' Field
>> Emergency Services Destinations
>> The PBX SHOULD format the 'To:' field as follows when an
>> emergency services call is made:
>> To: sip:[Country-specific emergency services
>> address];phone-context= [Predetermined Geographic E.164
>> addre...@[service Provider Domain Name] ;user=phone The
>> country-specific emergency services address is defined as the
>> dial string used in the country of origin to request
>> emergency services. The phone-context parameter SHOULD
>> contain a valid E.164 address previously agreed upon by the
>> Enterprise and Service Provider to represent the physical
>> location from which the call originated. The Service Provider
>> SHOULD ensure that valid location information for this
>> E.164 address is provisioned in the ALI database.
>> For example, an emergency services call originating in the
>> United States with a Geographic E.164 address of +16789901234
>> would be formatted as follows:
>> To: sip:911;phone-
>> [email protected];user=phone
>> --------------------------------------------------------------
>> -------------------------
>>
>
> There is now an auth-plugin which looks for calls matching Emergency
> dial rules (EmergencyNotify plugin).  It currently makes no changes to
> the message.
>
> Could this plugin add a parameter to mark this call as emergency, which
> sipxbridge could then do something special with?
>
> Is an auth-plugin the proper place to do this?
>
> What should the parameter look like?
>
> Carolyn


How do we determine the "Country-specific emergency services address"
(i.e. "911").  Is this part of the dial plan? Does the user have to
dial "prefix + 911" (i.e. 91911 assuming that 91 is the prefix?).

Regards

Ranga


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-- 
M. Ranganathan
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