Get Asterisk: The Future of Telephony, 2nd Edition now with O’Reilly online learning.
O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.
CHANNEL STATUS
CHANNEL STATUS [channelname]
channelname
Queries the status of the channel indicated by channelname or, if no channel is specified, the current channel.
Return values:
0
Channel is down and available
1
Channel is down, but reserved
2
Channel is off-hook
3
Digits have been dialed
4
Line is ringing
5
Line is up
6
Line is busy