Other Useful Features

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Tandem Configuration

The tandem configuration is a unit, consisting of two phones using the same directory number. One of the phones is defined as the primary and the other one as the secondary.

This function enhances the communication for users that, for example, have a wired phone on their desk (the primary phone) and need to be mobile within their company’s building with their own Cordless phone (the secondary phone). Basically, the tandem configuration works as follows:

To activate the Tandem Configuration

Press to log on the secondary phone.

Wait for the verification tone.

Press to finish the procedure.

For incoming calls:

Both phones are treated as 1 single extension. For outgoing calls:

Both phones are treated as 2 separate extensions.

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To deactivate the Tandem Configuration

Press to log off the secondary phone.

Wait for the verification tone.

Press to finish the procedure.

For incoming calls:

The secondary phone cannot be called and the primary phone works as a normal stand-alonephone.

For outgoing calls:

Both phones are treated as 2 separate extensions.

BusinessPhone – Cordless DT590

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Ericsson DT590 manual To activate the Tandem Configuration, To deactivate the Tandem Configuration