Aastra Telecom SIP 57I - Manual (Page 373)

Operational Features
41-001160-00, Release 2.1, Rev 04 5-163
Configuring Operational Features
Operational IP Phone Features
5 Enter the extension number where the call was parked.
6 Press the "Pickup" softkey.
If the call pick up is successful, you are connected with the parked call.
IP Phone UI
Step Action