Siemens 600 Series - Manual (Page 70)

3–6 ROLMphone 300/600 User Guide
Busy Standby Queuing
With Busy Standby Queuing, you can stay on a line
until a busy extension that you are trying to call
becomes free. The busy tone changes to music (or a
ringing-beep tone), indicating that you are queued. As
soon as the extension becomes free, your call will be
put through automatically.
To standby
queue for an
extension ➩ Listen for a busy tone.
➩ Stay on the line until you hear music (or a ring-
ing-beep tone). When the other party hangs up,
the CBX will complete your call.
To cancel busy
standby queuing
➩ Hang up.