Re: [Ecrit] IETF ECRIT Design Team on Premature Call Termination

[Marc Linsner <[e-mail]>]

Brian,

On 10/7/08 1:48 PM, "Brian Rosen" <[e-mail]> wrote:

> It is in use in some jurisdictions now.  Canada is an example.  It was
> deployed in the U.S., it got lost, and they mostly want it back.  It is not
> deployed in some areas.  The requirements state that if it's not needed, it
> doesn't stop termination, which implies some feature signaling with the
> appropriate defaults.

Remember, in the jurisdictions where this is currently deployed, it works
for only 35% of 9-1-1 calls (as 65% are from cellular).

> 
> In jurisdictions that have it deployed, I am not aware of the kind of
> problems you were imagining.  The current implementations put the call taker
> in charge of signaling alerts.
> 
> Brian
> 
> -----Original Message-----
> From: Ted Hardie [mailto:[e-mail]]
> Sent: Tuesday, October 07, 2008 1:15 PM
> To: Brian Rosen; 'James M. Polk'; 'Henning Schulzrinne'; 'Hannes Tschofenig'
> Cc: 'ECRIT'
> Subject: Re: [Ecrit] IETF ECRIT Design Team on Premature Call Termination
> 
> At 7:15 AM -0700 10/7/08, Brian Rosen wrote:
>> It's manual, not automatic.
>> 
>> When the PSAP call taker decides the call is over, then call termination
>> occurs.  They release the call (with a button).  In the proposed
> mechanisms,
>> the caller cannot terminate until then.

What document contains the proposed mechanisms?

-Marc-


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