Yealink SIP-T48G Administrator's Manual page 505

2. Click on Advanced, select Shared Call Appearance from the pull-down list of
Shared Line.
3. Enter the desired number in the Number of line key field.
This field appears only if Auto Linekeys is enabled.
The default value is 1. In this example, the value is set to 2.
4. Click Confirm to accept the change.
To configure the call pull feature access code via web user interface:
1. Click on Acount->Advanced.
2. Select the desired account from the pull-down list of Account.
Configuring Advanced Features
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