Sony 500 User Manual

If configured (contact your service personnel), you can 
lock and unlock other telephones to prevent unauthori-
zed access.

If a phone user locks his or her phone and forgets the 
personal lock code, you can use this function to unlock 
the phone.

N

Press the key shown.

Select and confirm the option shown.

j

Enter the internal station number of the phone you wish 
to lock/unlock.

Confirm,

select and confirm the option shown

*943=Lock all phones?

*=Phone lock on?

#=Phone lock off?