Changing Your Settings 166• TTY - Allows you configure the phone to utilize TTY equipmentconnected to the phone’s headset jack. Configuration options are:TTY Full, TTY+ Talk (VCO), TTY + Hear (HCO), or TTY Off. TTY(also known as a TDD or Text Telephone) is a telecommunicationsdevice that allows people who are deaf, hard of hearing, or whohave speech or language disabilities to communicate by telephone.Note: If TTY mode is enabled, the audio quality of non-TTY devicesconnected to the headset jack may become impaired.• Alerts - Allows you to toggle the on/off state for the Minute beep,Connect tone, and Disconnect tone features.• Emergency Tone - Allows you to select the emergency tone for thedevice.• Networks - Allows you to select a desired roaming option. Formore information, refer to “Changing your Roaming NetworkOptions” on page 64.• GPS - Allows you to specify if your phone sends global positioninginformation whenever you make a call, i.e. Location On, or onlywhen you make a 911 Only call.• Voice Privacy - Allows you to select the level of encryption usedwhen making or receiving phone calls. Enhanced mode offers moresecurity but can be associated with network delay while theadvanced encryption is encoded or decoded.• Assisted Dialing - Ensures that the proper prefix is in place forlocal and international calling.2. Tap to save your changes and return to the previousscreen.Security TabThe Security tab allows you to restore the factory default settingsfor your phone, and set emergency call numbers.Note: If you select the Phone Reset Button and confirm you want to resetyour phone, all of your phone settings and user installed applicationswill be erased. You must enter your password before this can happen,but all settings are restored to their factory setting when you performthis operation.The Emergency call feature provides you with three numbers thatyou can assign and edit, as well as the three 911 emergencynumbers, that can be called even when your phone is in lockmode. Although the 911 numbers appear in this list, they cannotbe edited.ok