Operation
17
Pick up handset of telephone 21.
You will hear the internal dialling signal
Dial code number
.
The external call will be disconnected. You will
hear the acknowledge signal.
Hang up.
Disconnection is done.
Summary of functions with an external line on hold
Key sequence
Function Requirement
Initiate query.
External line on hold
Your conversational partner will hear music on
hold
Internal subscriber will hear dialling signal of
the telephone system
Active external line will be disconnected.
Conversational will hear busy signal.
Toggles between both external lines.
One external line active, the other one on hold.
Initiate call forwarding followed by
dialling the target number of the internal
subscriber.
One external line active, the other one on hold.
Connecting two external subscribers
Both external lines on hold.
Occupy second external line
One external line on hold.
