How to prevent other people from using your telephone (Extention Dial Lock) in panasonic NS300 EPABX?

You can lock your extention so that other users cannot make unathorised outside calls.

Method-1

To Lock

To Unlock

Note- To unlock your extention first, you have to set Personal Identification Number (PIN). Details are given in below link-

https://onlinewebit.blogspot.com/2019/08/how-to-set-personal-idendification.html

Method-2

Another method for locking your extention is the settings of Verification Code that is described in below link-

https://onlinewebit.blogspot.com/2019/08/how-to-set-verification-code-in.html