Premature Disconnect

1
Premature Disconnect

• Brian Rosen
• NeuStar

2
Reminder of the problem

• Emergency Call is connected to PSAP
• Distressed caller hangs up before giving all
  information to call taker
• Desired behavior is that device alerts. If user
  responds, immediate reconnection to call taker
• Call taker disconnect always succeeds

3
The controversy

• Derives from the fact that disconnect by caller
  is not always wrong
• Call center may be busy (call answered at IVR)
• Caller may react faster than the call taker
• This means (to the PSAP community) that the call
  taker must control the feature
• Which implies signaling at call time
• Others believe this is a device UI feature

4
Other related issues

• We have decades of experience with this feature.
  Where it is deployed, they dont want to lose it
• The fears of this causing more problems then it
  solves is not born out by experience, and there
  is no evidence that the Internet changes the
  fundamentals
• Immediate reconnect may imply things some
  networks dont like
• Do the media channels get disconnected and then
  reconnected, or are they held up?
• The mechanism cannot brick the phone the user
  has to be able to force disconnect
• Abandoned Call where the disconnect occurs
  before the call is answered is a separate issue

5
Where are we

• Draft has gone through several rewrites in an
  attempt to address concerns
• Current draft does not describe mechanisms, only
  user experiences
• Draft is not been acceptable to the do it on the
  UI crowd
• The signal PSAP controlled disconnect crowd
  needs solutions
• Opponents have demanded more rewrites promised
  alternative text, which has not happened

6
What to do

• There is a constituency for the solution
• There is a draft with requirements
• There is vocal opposition, but no text from that
  opposition
• The draft should become a work group item, and
  the chairs should appoint an editor