pbx*CLI> dialplan add extension 4001,1,NoOp(${IF(true:false)}) into local replac
e
Extension 4001@local (1) replace by '4001,1,NoOp,${IF(true:false)}'
    -- Added extension '4001' priority 1 to local
pbx*CLI> dial 4001@local
[Dec  4 11:44:45] WARNING[13838]: chan_oss.c:682 setformat: Unable to re-open DS
P device /dev/dsp: No such file or directory
pbx*CLI>
Disconnected from Asterisk server
Executing last minute cleanups
Asterisk cleanly ending (0).