Yealink SIP-T28P - Manual (Page 85)

Customizing Your Phone
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3. Enter the desired delay time in the Inter Digit Time (1~14s) field.
The default delay time is 4s.
4. Click Confirm to accept the change.
Note
You can dial a hotline number immediately upon lifting the handset, pressing the
Speakerphone key or pressing a line key. You can also configure a delay, where the
phone will dial out the hotline number automatically after the specified period of time.
To configure hotline number via phone user interface:
1. Press Menu->Features->Hotline.
2. Enter the desired number in the Hotline Number field.
3. Enter the delay time (in seconds) in the Hotline Delay field.
The valid values range from 0 to 10.
4. Press the Save soft key to accept the change or the Back soft key to cancel.
Live dialpad is configurable via web user interface only.