Yealink SIP-T48G User Manual page 191

Enter the directed call pickup code in the Directed Call Pickup Code field.
3.
Click Confirm to accept the change.
4.
To configure the directed call pickup code on a per-line basis via web user interface:
Click on Account->Advanced.
1.
Select the desired account from the pull-down list of Account.
2.
Enter the directed call pickup code in the Directed Call Pickup Code field.
3.
Click Confirm to accept the change.
4.
Basic Call Features
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