Yealink SIP-T22 - Manual (Page 75)

Customizing Your Phone
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2. Enter the emergency number in the Emergency field.
For multiple numbers, enter a comma between every two emergency numbers. The
default emergency numbers are 112, 911 and 110.
3. Click Confirm to accept the change.
Note
You can enable live dialpad on the SIP-T22P/SIP-T22 IP phone, which enables the IP
phone to automatically dial out phone numbers without pressing any other key. You can
also configure a delay, where the phone will dial out the hotline number automatically
after the specified period of time.
To enable live dialpad via web user interface:
1. Click on Settings->Preference.
2. Select Enabled from the pull-down list of Live Dialpad.
Emergency number is configurable via web user interface only.