> -----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
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