"Automatic A/B Roaming - Intelligent Retry: <snip>...The Order approves this mode, subject to two conditions that address the possibility that this mode may cause long set-up times in some cases. These conditions are: (1) that the handset provide effective feedback to inform the user when 911 call processing is underway, such as an audible tone or message and a visual status report, and (2) that, in any case once a 911 is sent, the handset not spend more than 17 seconds seeking to complete the call with the preferred carrier before reattempting the call with the non-preferred carrier. If the handset does not receive confirmation that the call is ringing at the 911 location within that 17 seconds, the handset would switch the call to the other cellular carrier."
Well, that's just ducky, don't you think. Too bad I just signed a two year contract with Verizon. Not all carriers phones use the method that requires an alarm.