Yealink SIP-T48G - Manual (Page 131)

Basic Call Features
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To configure the group call pickup code on a per-line basis via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Enter the group call pickup code in the Group Call Pickup Code field.
5. Click Confirm to accept the change.
To pick up a call in the group:
1. Pick up the handset or tap the line key.
The GPickup soft key appears on the on-screen keypad.
2. Tap the GPickup soft key on your phone when a phone in the group receives an
incoming call.
The call is answered on your phone.