[Asterisk-Users] chanisavail - queuing

[Bill Michaelson]

Is there anyway to code for queuing for an available trunk.  I thought 
of this while reading about Erlang C.

Basically, the idea is that when a caller at an internal extension tries 
to place a call via PSTN, but all available trunks are busy, the call is 
placed in a FIFO queue for the first available trunk while the caller 
hears an appropriate announcement.