Yealink SIP-T21 - Manual (Page 66)

User Guide for the SIP-T21P/SIP-T21 IP Phone
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To add a replace rule via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Enter the string (e.g., 1) in the Prefix field.
3. Enter the string (e.g., 1234) in the Replace field.
4. Enter the desired line ID in the Account field or leave it blank.
5. Click Add to add the replace rule.
When you enter the number “1” using the keypad and then press the Send soft key,
the phone will dial out “1234” instead.
Note
To edit a replace rule via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Select the desired replace rule by checking the check box.
3. Edit the values in the Prefix and Replace fields.
4. Enter the desired line ID in the Account field or leave it blank.
5. Click Edit to accept the change.
To delete one or more replace rules via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Select one or more replace rules by checking the check box(es).
The valid values of Account field can be one or two digits among 1 and 2. Each digit must
be separated by a comma. For example, when you enter the value “1, 2” in the Account
field, this replace rule will apply to account1 and account2.
If you leave the Account field blank or enter 0, the replace rule will apply to all accounts.