Yamaha CS-700 Series Integrators Reference Manual page 166

The user starts with all lines on hold, and not in conference.
resume 1
resume usb
At this point, line 1 and USB are in active state, and line 2 is in held state. Note, leaving two
lines in active state without holding either or both will produce undefined telephony behavior.
join 1 1 2 0 usb 1
At this point, line 1 and USB are in conference, and line 2 is on hold outside the conference. The
user now puts line 2 in conference.
resume 2
At this point, line 2 and the conference are in active state.
join 1 1 2 1 usb 1
At this point, all lines are in active state in the conference
Hangup a call in conference
The user starts with line 1 and USB in an active conference.
hangup 1
At this point, line1 is disconnected and removed from conference, but USB is still in conference.
join 1 0 2 0 usb 0
At this point, USB is active and outside the conference.
Yamaha CS-700 Integrators Reference Guide 166