Yealink SIP-T20 - Manual (Page 60)

User Guide for the SIP-T20P/SIP-T20 IP Phone
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2. Enter the desired time within 1-14 (in seconds) in the Time-Out for Dial-Now Rule
field.
3. Click Confirm to accept the change.
Note
Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate
geographical areas in a country. This feature is necessary only when dialing the number
outside the code area. For example, area code is configured as ―code: 0592, Min
Length: 4, Maxi Length: 11‖, then when you dial out the number ―56789‖, which has the
digits between 4 to 11, the phone will add the area code and dial out the number
―059256789‖. You can only configure one area code rule on your phone.
To configure the area code via web user interface:
1. Click on Settings->Dial Plan->Area Code.
2. Enter the desired values in the Code, Min Length (1-15) and Max Length (1-15)
fields.
Delay time for dial-now rule is configurable via web user interface only.