Aastra 9143i Series Administrator's Manual page 556

IP Phone Administrator Guide
Operational Features
Aastra Web UI
For the 6757i 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
5-250
to save your changes.
41-001160-04 Rev 02, Release 2.5