Currently using this
asterisk -rx 'channel originate local/401@from-internal extension 403@from-internal'
to get ext 401 to ring, then when it’s answered it dials 403. Works great. And for me so much quicker to setup than a call file.
Anyway to avoid “private number” appearing on extension 401 though? Would be great if it could say something useful. No big deal though, it’s a trivial detail.