5. Extension Dial Lock ClearTo setPT/SLT/PS/SIP Extn.Off-hook. Enter 799.1Enter 1. Enter extensionPIN (max. 10 digits).extension PIN#Enter #.sameextension PIN #Enter #. On-hook.Enter same extensionPIN (max. 10 digits).7 9 9C.TonePIN: Personal Identification NumberTo cancelPT/SLT/PS/SIP Extn.Off-hook. Enter 799.0Enter 0. Enter storedextension PIN.On-hook.storedextension PIN7 9 9 C.TonePIN: Personal Identification NumberCAUTIONThere is a risk that fraudulent telephone calls will be made if a third party discovers yourpassword (extension PIN).The cost of such calls will be billed to the owner/renter of the PBX.To protect the PBX from this kind of fraudulent use, we strongly recommend:a. Keeping your PIN secret.b. Selecting a complex, random PIN that cannot be easily guessed.c. Changing your PIN regularly.• Valid numbers for an extension PIN are "0" through "9".• If the wrong extension PIN is entered for a preprogrammed number of times, the PIN islocked.• If you forget your extension PIN or your extension PIN is locked, your manager can clear theextension PIN and extension PIN lock.1.3.28 External RelayPreprogrammed extensions can switch on a relay (e.g., alarm) connected to the PBX.92 Operating Manual Document Version 2013-041.3.28 External Relay