Ericsson 250 - Manual (Page 32)

GROUP FACILITIES
32
BusinessPhone 250 - Basic Telephone
BusinessPhone 50 - Basic Telephone
KEY SYSTEM With this function, all (or selected) external lines are
represented by pre-programmed keys on all phones.
For each external line, a function key has to be programmed.
Which means that you are able to monitor the state of traffic
for every programmed external line (e. g. free, busy).
You can also establish an external call by pressing the external
line key.
Answer an external
call
To answer an external call, just press the flashing key.
(Depending on the programming of the system, an incoming
external call will be announced with a flashing line-key and a
ringing signal).
Lift the handset
External line Press (pre-programmed)
Speech connection with the caller.
Make an external call To initiate an external call, just press the external line key
The external line will be seized automatically.
Lift the handset
External line Press a free line-key (pre-programmed)
Dial the desired number
If you make external calls in this way, you do not have to
dial the digit(s) for external calls first.