[asterisk-users] Call Parking/Pickup on a single button

[Alvin Austin]

Is it possible with asterisk to use a single button to park and retrieve a call?

e.g. Button is labelled Park 701
- If it is not in use, park the current call to 701
- If it is in use (the associated LED will be lit), pickup the call at
701 (putting the current call [if any] on hold).

A Polycom IP600 phone would have two or three of these keys (701, 702, 703).

Any suggestions appreciated!

Alvin