User guide

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This configuration allows two terminals to operate under a single number. Your desk
terminal is typically the main terminal, while another (usually a PWT terminal), is the
secondary. Each telephone has its own system station number, but the twin-set
number is that of the main terminal.
In the twin-set configuration, a call to the twin-set number rings at both terminals
simultaneously. When either terminal takes the call, the other stops ringing. When
all the lines of the main terminal are busy, the secondary terminal does not ring.
The secondary terminal can always be called at its own number, bypassing the
twin-set feature.
Most features are shared by the two terminals (e.g. call forwarding, appointment
reminder, messages, etc.), but other features remain specific to each terminal (e.g.
personal directory, automatic callback, out of service, terminal locking, etc.).
Note: when the twin-set configuration is created, all the programmed features (call
forwarding, call-backs, messages, etc.) are canceled on both terminals.
For further information on this configuration, contact your system administrator.