Yealink T5 Series User Manual page 153

Enter the group call pickup code in the Group Call Pickup Code field.
3.
Click Confirm.
4.
You can also configure the group call pickup code on a per-line basis:
Procedure:
Click Account->Advanced.
1.
Select the desired account from the Account field.
2.
Enter the group call pickup code in the Group Call Pickup Code field.
3.
Click Confirm.
4.
Basic Call Features
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