Doro 850 colour, Manual

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Expanded System
General information
DECT (Digital Enhanced Cordless Telephone) is a digital method of
transmission for cordless telephones. You can:
- Use up to 6 handsets with the same base unit.
- Make internal calls (intercom) and transfer calls between handsets
connected to the same base unit
- Connect (register) up to 4 base units to the same handset.
Additional handsets can be purchased from your local retailer.
This model is also GAP (Generic Access Profile) compatible, which means
that the handset and the base unit can both be used with most other GAP-
compatible units irrespective of manufacturer. However, the GAP protocol does
not guarantee all functions will work.
Multiple handsets
The multiple handset function has numerous practical applications, e.g.
employees in an office can have several handsets linked to the same base unit.
They can all answer incoming calls, make outgoing calls, use the handsets
internally as an intercom system, and also transfer external calls between the
handsets. One external call and one internal call can be active simultaneously.
To be able to use extra handsets with a base unit, you must register the handset.
Registration enables the handset to know which base unit it belongs to.
On registration, the handset is allocated a specific handset number, e.g. 2. This
number is also used for internal calls between handsets. When you purchased
the telephone, the handset was pre-registered with the accompanying base unit.
The handset has the handset number 1, which is shown in the display in standby
mode. Refer to the Registration chapter for more information.
If you wish to use several handsets with one base unit, you should ensure that
the base unit is centrally positioned to evenly distribute the base unit range
among the handsets.