Aastra 55i IP Phone - How do I lock my phone?

176 Model 55i IP Phone User Guide
Model 536M and 560M Expansion Modules
560M Expansion Module
The 560M Expansion Module screen displays softkeys in column format. The
function keys on the bottom left of the Module allow you to display 3 full screens of
softkeys. Each screen consists of 2 columns with the following default headings on
each page:
Page 1"List 1" and "List 2"
Page 2"List 3" and "List 4"
Page 3"List 5" and "List 6".
List 1 List 2
BLF 200
Home (speeddial)
Lock/Unlock
Softkeys
Function Keys
(Press for page 1)
(Press for page 2)
(Press for page 3)
Page 1 Screen