Accessories

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Headset (optional)

To install the headset, see section “Install Cables” on page 110. The following headset functions are available.

Answer calls

Press to answer.

The Headset key lamp is turned on.

Note: When the phone is set for Headset Preset, you can also press the flashing Line key to answer the call. See section “Headset Preset” on page 94.

Press to terminate the headset call.

Make calls

Press and dial the number.

The Headset key lamp is turned on.

Note: When the phone is set for Headset Preset, you can also dial the number directly without pressing the Headset key, or press a Line key instead of the Headset key. See section “Headset Preset” on page 94.

Press to terminate the call.

From headset to handset

Lift the handset.

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BusinessPhone – Ericsson Dialog 4422 IP Office

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Ericsson 4422 manual Headset optional, Make calls, From headset to handset