Technical Summary
The IETF emergency services architecture assumes that the calling device
has acquired rights to use the access network or that no authentication
is required for the access network, such as for public wireless access
points. Subsequent protocol interactions, such as obtaining location
information, learning the address of the Public Safety Answering Point
(PSAP) and the emergency call itself are largely decoupled from the
underlying network access procedures.
In some cases, however, the device does not have these credentials for
network access, does not have a VoIP service provider, or the
credentials have become invalid, e.g., because the user has exhausted
their prepaid balance or the account has expired.
This document provides a problem statement, introduces terminology and
describes an extension for the base IETF emergency services architecture
to address these scenarios.
Working Group Summary
This document represents strong work group consensus and broad group
participation in developing the solution provided. There were no
significant controversies that were not overcome during the development
stage. A successful document development history is documented in the
ecrit email list archive.
Document Quality
No existing implementations are known to exist. Several vendors were
involved in sponsoring the document originally, and have stayed involved
in the development and review of the document.
Personnel
Document shepherd: Roger Marshall (ECRIT co-chair)
Responsible Area Director: Richard Barnes (RAI AD)