Aastra Telecom SIP 57I - Manual (Page 376)

Operational Features
5-166 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Operational IP Phone Features
For the 57i CT Handset:
1 Click on Operation->Handset Keys.
2 Pick a handset key to configure for Last Call Return.
3 In the "Key Function" field, select lcr.
4 Click to save your changes.
Aastra Web UI