Wednesday, February 16, 2005

Emergency Services 

Since I am also working now on Emergency Services for VoIP, I will also start to post issues related to Emergency Services here. The IETF has established a new workgroup "ecrit" -
Emergency Context Resolution with Internet Technologies.

NENA has defined three VoiP and E911 migratory stages:
I1 - deliver the 911call from VoIP
I2 - deliver via 911 network, with ANI and ALI within limits
I3 - deliver via IP-based E911 systems to IP PSAP

Since all I1 and I2 stages will be different in most countries depending on the existing local infrastructure, IETF WG ecrit will deal only with I3 related issues.

IETF WG ecrit will meet at the next 62nd IETF meeting in Minneapolis, currently four I-Ds are submitted:
in addition, the already existing inputs from Henning will be covered

The milestones of IETF WG ecrit are quite agressive, the most documents should be available in August 2005 (ok - lets be realistic - End of 2005).

In the meantime work on I2 seems to make some progress, as Jeff stated today on his blog:

Earlier today I received the following message:


I'm sure you are aware that a E911 VoIP trial is ongoing in King County
(greater Seattle area). The King County 911 office along with an ILEC,
Intrado, Vonage, and others have already completed 911 calls that route to
the correct Primary PSAP, carried the correct call back number, and the
correct address information. Dynamic routing (within one hour) of "changed"
address information when a user moves locations, is the last test and is
scheduled for next week (today the information takes a week to be updated
by industry). The method is unusual and still needs to be worked through
the standards organizations but proves that 911 issues for VoIP can be
resolved by cooperation between government and interested companies. If
approved by NENA and ATIS, this method of routing 911 calls will bring
better 911 service to VoIP users in all states.

The initial coordination of this continuing successful project was started
at the VON conference in Boston more than a year ago. Inviting staff from
the Washington State Utility Commission, as well as other state regulatory
commissions, allowed for the type of communication that will build
networks and resolve just these kinds of issues in the future between
industry and the regulatory world.

Hopefully the difficult issues like E-911 cost recovery will be resolved in
the same cooperative manner. Thanks again for making it possible for state
regulators to attend both the Boston and Santa Clara VONs. I will miss the
communication between attendees. I will also miss the excellent parties.


Bob Williamson
Senior Member Technical Staff
Washington Utilities and Transportation Commission
Olympia, WA.


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