[asterisk-users] Block outbound calls based on IP address

[CB]

Thanks. 

exten => s,n,Set(foo=${CHANNEL(peerip)}) ; Doesn't return anything
exten => s,n,Set(foo=${CHANNEL(recvip)}) ; Doesn't return anything
exten => s,n,Set(foo=${SIPCHANINFO(peerip)}) ; Returns public IP when
calling from a SIP device

Strange that CHANNEL doesn't return anything.