[SIPForum-techwg] FW: SIPConnect Emergency Text

[Richard Shockey]

Shit

 

Sorry

 

Here it is:

While not explicitly required by this interface specification, it is
RECOMMENDED that the Service Provider support emergency services calls for
one or more fixed physical locations serviced by the Enterprise Network. In
some jurisdictions, a special e164 number is designated for use as a key in
a database that stores precise location information.  This number, which can
be non-dialable, is provided to the emergency system to determine routing
and dispatch.  Where such numbers are needed, for each such physical
location, the Enterprise and Service Provider SHOULD mutually agree upon an
E.164 number that will be used when an emergency services call is made from
that location[JRE1] <>   . This E.164 number SHOULD included in the INVITE. 

 

The PBX SHOULD format the 'Request-URI' field as follows when an emergency
services call is made:

 

INVITE  <sip:[Country-specific emergency services
address];phone-context=[Predetermined Geographic E.164 Address]@[Service
Provider Domain Name] ;user=phone> SIP/2.0

 

The actual telephone number of the caller is provided as described in
Section 15.6.1. The country-specific emergency services address is defined
as the dial string used in the country of origin to request emergency
services. Where a special e.164 number is needed, 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 emergency
services database.

 

For example, an emergency services call originating in the United States
with a special E.164 number of +16789901234 would be formatted as follows:

 

To: <sip:911;phone-context=+16789901234 at serviceprovider.net;user=phone>

 

 

  _____  

  Earlier it said that the sos URN would be used.

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