Standard Messages
From Yate Documentation
Engine messages
engine.start
engine.stop
engine.halt
engine.init
engine.busy
engine.help
engine.command
engine.status
engine.timer
engine.cipher
module.update
Channel messages
chan.attach
chan.connected
chan.disconnected
chan.dtmf
chan.hangup
chan.masquerade
chan.notify
chan.record
chan.rtp
chan.startup
chan.text
chan.connect
chan.locate
chan.control
chan.replaced
chan.transfer
Call messages
call.answered
call.cdr
call.drop
call.execute
call.progress
call.ringing
call.route
call.preroute
call.update
call.conference
mwi
User messages
user.account
user.auth
user.login
user.notify
user.register
user.unregister
user.roster
user.update
Resource subscribe/notify messages
resource.subscribe
resource.notify
SIP messages
sip.methodname xsip.generate
Encode or decode protocol specific messages
isup.decode
isup.encode
isup.mangle
sccp.generate
Socket operation messages
socket.stun
socket.ssl
socket.peel
socket.sctp
cluster.locate
cluster.send
msg.route
msg.execute
contact.info
Jabber / XMPP messages
xmpp.generate
xmpp.iq
jabber.iq
jabber.item
Miscellaneous messages
database
monitor.query
monitor.notify