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

Brian,

I have no problem entertaining new requirements.  I simply want the
motivation ("We have to do this because") to be spun correctly.

I also believe this demands a viewpoint from the 'other' party, the PSAP
customer, Joe Citizen.

If in fact a solution can to designed that fulfills the requirement and
protects Joe's desires, I have no problem.

-Marc- 

On 10/8/08 8:50 AM, "Brian Rosen" <br@brianrosen.net> wrote:

> So, what, because wireless carriers refused to implement it, despite
> repeated requests to do so, and wireless is now more popular, we should
> strike the requirement?
> 
> PSAPs I talk to consider this a requirement.  They are VERY unhappy the
> carriers do not honor the requirement, in both wireline and wireless, in the
> U.S.  Canada is very unhappy about the wireless situation.  Both are adamant
> that they have a REQUIREMENT for this capability.
> 
> As with any other protocol issue, there are no protocol police.  We can
> define the mechanism, but implementation may or may not occur.  The PSAPs
> have a requirement.  It comes from experience.  We should honor it I think.
> 
> Brian
> 
> -----Original Message-----
> From: Marc Linsner [mailto:mlinsner@cisco.com]
> Sent: Tuesday, October 07, 2008 5:28 PM
> To: Brian Rosen
> Cc: 'ECRIT'
> Subject: Re: [Ecrit] IETF ECRIT Design Team on Premature Call Termination
> 
> Brian,
> 
> On 10/7/08 1:48 PM, "Brian Rosen" <br@brianrosen.net> 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:hardie@qualcomm.com]
>> 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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