Operation Manual

First calls
6
First calls
Upon delivery, the automatic exchange connection is disabled within the telephone
system. Dial the line prefix "0" for CO line access.
If the “automatic exchange connection” feature has been activated, you can dial
“”for an internal line, or wait for 10 seconds after picking up the receiver until
you hear the internal dialling tone. You can then dial desired extension number.
After 10 seconds, the telephone system automatically switches to the internal
dialling tone.
Internal call
Analogue telephone 50:
Pick up receiver.
Y
ou hear the internal dialling tone.

Dial internal subscriber number.
Y
ou hear the ringing tone or the busy tone.
Analogue telephone 51:
Pick up receiver.
Y
ou are connected with the internal
subscriber. Place your call.
Hang up both receivers. Termination of call.
External call
Analogue telephone 50:
Pick up receiver.
Y
ou hear the internal dialling tone.

Dial line prefix.
Y
ou hear the external dialling tone.

Dial the phone number of the external
subscriber.
Y
ou hear the ringing tone or the busy tone.
External subscriber:
Pick up receiver.
Y
ou are connected with the external
subscriber. Place your call.
Hang up receiver. Termination of call.