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User Guide for the SIP-T21P/SIP-T21 IP Phone

Dependencies:

Type (Key Event)

Key Type (DND)

Usage:

When DND is in phone mode:

1. Press the DSS key to activate DND.

2. Press the DSS key again to deactivate DND.

When DND is in custom mode:

1. Press the DSS key to access the custom DND interface.

2. Activate or deactivate DND for one or all accounts.

Note

SMS

You can use this key feature to quick access the short message service. For more

information, refer to Short Message Service (SMS) on page 109.

Dependencies:

Type (Key Event)

Key Type (SMS)

Usage: Press the DSS key when the phone is idle to access the short message service.

Group Listening

You can use this key feature to activate the Speakerphone and Handset/Headset mode

at the same time. It is suitable for the group conversation which has more than one

person at one side. You are able to speak and listen through the handset/headset,

meanwhile the others nearby can only listen through the speaker.

Dependencies:

Type (Key Event)

Key Type (Group Listening)

Usage:

1. During a call, press the DSS key to activate the group listening mode.

You can then speak and listen through the handset/headset, other persons at your

side can listen through the speaker at the same time.

2. Press the DSS key again to deactivate the group listening mode.

Zero Touch

You can use this key feature to configure auto provision and network parameters quickly.

Dependencies:

Type (Key Event)

Key Type (Zero Touch)

Usage:

1. Press the DSS key to access the zero touch screen.

2. Press the OK soft key in a few seconds.

When DND is activated, the incoming calls will be rejected automatically.

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Yealink SIP-T21 Manuel d'utilisateur Page 62