Example of my call file:
Channel: OOH323/95.22.201.162-2c2d                 
Context: trunklocal
application: meetme(7777,i)


    -- Attempting call on OOH323/95.22.201.162-2c2d for application meetme(7777,i)() (Retry 1)
Oct  3 19:20:35 NOTICE[4741]: pbx_spool.c:269 attempt_thread: Call failed to go through, reason 1

I just pretend some users ( external ussers who are ussing some channel ) can share voice in a conference room.

I have also try ussing Channel: Zap/1 and so, but that does not works.