[Asterisk-Users] answer on # key?

[Matthew Simpson]

I thought I read somewhere on the Wiki that one could give Dial() an 
argument that would first dial the extension, but not bridge the connection 
until the called party hit the "#" key.  It must have been during one of 
those late night coding sessions because now I can't find anything to do 
with that other than options to allow hangup of the call by hitting "*".

Does such an option exist?

If not, is anyone using a Macro to do that?

I have a system that attempts to do a Dial out to a cell phone number with a 
15 second timer as a find me type of application.  If the cell phone is off 
or out of range, the 15 seconds of ring time isn't reached and the caller 
gets connected to the cell phone's voicemail instead of the Asterisk 
voicemail like I want.  Having the # to connect option would fix this 
problem.