Emergency Context Resolution with Internet Technologies

Document Charter Emergency Context Resolution with Internet Technologies WG (ecrit)
Title Emergency Context Resolution with Internet Technologies
Last updated 2020-03-25
State Approved
WG State Active
IESG Responsible AD Murray Kucherawy
Charter Edit AD Murray Kucherawy
Send notices to (None)


In a number of areas, the public switched telephone network (PSTN) has 
been configured to recognize an explicitly specified number (usually one 
that is short and easily memorized) as a request for emergency services.  
These numbers (e.g., 911, 112) are related to an emergency service 
context and depend on a broad, regional configuration of service contact 
methods and a geographically-constrained approach for service delivery.  
These calls are intended to be delivered to special call centers 
equipped to manage emergency response. Successful delivery of an 
emergency service call within those systems requires an association of 
both the physical location of the originating device  along with 
appropriate call routing to an emergency service center.

Calls placed using Internet technologies do not use the same systems 
mentioned above to achieve those same goals, and the common use of 
overlay networks and tunnels (either as VPNs or for mobility) makes 
meeting these goals even more challenging.  There are, however, Internet 
technologies available to manage location and to perform call routing.
This working group has described where and how these mechanisms may be 
used. The group specified how location data and call routing information 
are  used to enable communication between a user and a relevant 
emergency response center [RFC6443,RFC6444]. Though the term "call 
routing" is used, it should be understood that some of the mechanisms 
described might be used to enable other types of media streams.

Beyond human initiated emergency call request mechanisms, this group 
will develop new methods to enable non-human-initiated requests for 
emergency assistance, such as sensor initiated emergency requests.

The working group will also address topics required for the operation of 
emergency calling systems, such as:  authentication of location, 
management of the service URN namespace, augmented information that 
could assist emergency call takers or responders.

Explicitly outside the scope of this group is the question of pre-
emption or prioritization of emergency services traffic in the network. 
This group is considering emergency services calls which might be made 
by any user of the Internet, as opposed to government or military 
services that may impose very different authentication and routing 

While this group anticipates a close working relationship with groups 
such as NENA, EENA, 3GPP, and ETSI , any solution presented must be 
general enough to be potentially useful in or across multiple regions or 
jurisdictions, and it must be possible to use without requiring a 
single, central authority.  Further, it must be possible for multiple 
delegations within a jurisdiction to be handled independently, things 
such as call routing for specific emergency types, media types,
language contents, etc.,  may be routed differently depending on 
established policies and availability.

This working group will address privacy and security concerns within its