Accessibility
TTY Mode
Your handset is a
From the home screen, select Main Menu > Settings > Phone Settings > TTY Setting.
Select one of the following options and press the OK Key.
Full: Users who cannot talk or hear may use this setting to send and receive text messages through TTY equipment.
Read & Talk: Users who can talk, but cannot hear, may use this setting to talk through the phone and receive responses via text message.
Write & Hear: Users who can hear, but cannot talk, may use this setting to listen to the other party and respond via text message.
Off: Disable TTY support.
HAC (Hearing Aid Compatibility) Mode
This phone supports HAC (Hearing Aid Compatibility). When you turn on HAC Mode and use a hearing aid with a telecoil to answer the phone, it will help you hear more clearly. For more detailed information on HAC, please refer to “Turn on the HAC Setting” under Care and Maintenance in this manual.
From the home screen, select Main Menu > Settings > Phone Settings >
Press the OK Key to enable or disable the
Your Z431 has been tested for
Care and Maintenance
General Care
Your handset contains delicate electronic circuitry, magnets, and a
• Do not allow the handset, battery, or accessories to come into contact with liquids or moisture at any time. Do not immerse the handset in any liquid.
• Do not place the handset alongside computer disks, credit cards, and other magnetic media. The information contained on disks or cards may be affected by the handset.
• Do not paint the handset.
• Do not leave the handset or the battery in places where the temperature could exceed 113°F (45°C), for example, on a car dashboard or a windowsill, behind glass in direct sunlight, etc.
• Do not remove the handset’s battery while the handset is switched on.
• Take care not to allow metal objects, such as coins or key rings, to contact or
• Do not dispose of battery packs in a fire. You can dispose of the handset’s
• Do not put the handset’s battery in your mouth, as battery electrolytes may be toxic if swallowed.
• Do not attempt to disassemble the handset or any of its accessories.
• Do not put a battery into a microwave oven, dryer, or
• Do not connect a battery directly to an electrical outlet or the cigarette lighter port of a car. Use only approved charging units.
• Do not pierce a battery with a sharp object such as a needle.
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