Yealink T4 Series IP Phones User Guide48Setting the Phone LockBy default, the phone lock feature is disabled. If you want to lock your phone, you need to enable this feature. You canselect to use which phone lock type and specify the waiting time to lock your phone automatically.Procedure1. Navigate to Menu->Basic->Phone Lock.For the SIP-T42S/T42G/T41S/T41P/T40P/T40G IP phone, navigate to Menu->Settings->Basic Settings->PhoneLock.2. Enter the desired PIN (default PIN: 123) in the Unlock PIN field.3. Press OK.For the SIP-T48S/T48G IP phone, tap Save.4. Select Enabled from the Lock Enable field.5. Select a desired type from the Lock Type field (except the SIP-T48S/T48G IP phone).6. Enter the desired interval between 0 and 3600 (seconds) of automatic phone lock in the Auto Lock field.7. Press Save.Related TopicsPhone Lock Types and Waiting TimeLocking Your Phone ManuallyIf you have specified a timeout to lock your phone automatically, your phone will be locked after being idle for a spe-cified time. You can also lock your phone manually.Before You BeginMake sure that the phone lock is enabled and you have set a phone lock type.Procedure1. Long press # key to lock your phone immediately on the Idle screen.When the phone is locked, the lock icon will appear on the LCD screen.Related TopicsSetting the Phone LockUnlocking Your PhoneProcedure1. Press any locked key, the LCD screen prompts you to enter a unlock PIN.On the SIP-T48S/T48G IP phone, press any locked key or tap the touch screen.2. Enter the desired PIN (default: 123) in the Unlock PIN field.3. Press OK.The lock icon disappears from the LCD screen.NoteIf you forget the unlock PIN, you can enter the administrator password to unlock your phone, and then change the unlockPIN if allowed.
