[Asterisk-Users] Holding and call parking idiosyncrasies...

[Michael George]

We are going to replace a BizFone with Asterisk and one of the features 
that I haven't been able to emulate is the PBX hold.  We can put a call 
into hold with the * key and every 30 sec the phone gets a beep to 
remind us it is there and the caller on hold can hit # for other 
options.

The closest I've come with Asterisk is call parking, and that doesn't 
quite do it.  Using the standard include => parkedcalls (with digium 
FXS cards) I get different behavior depending on whether the calling or 
called extension does the parking.

If the called extension parks the call, it will be parked and when the 
timeout expires the original extension will be run (for pickup or 
voicemail).

If the calling extension parks the call, the call will go to the 
parking spot just fine but when the timer expires we get:

Channel Zap/2-1 sent into invalid extension 's' in context 'default', 
but no invalid handler

There is nothing in the parking docs that discusses needing a default 
context for the call to return to.  I can create a context with that 
name, but I'm not sure what it should do...  I don't know if there's a 
way to extract the original extension and have it called in the default 
context.

Is there more information on this somewhere?

-Michael