Features:
• FSK and DTMF caller ID display, automatic detection.
• Backlight: Adjustable brightness.
• Redial, callback, Flashing function.
• Overvoltage protection.
• 16 groups of outgoing call storage.
• 62 groups of dynamic call storage.
• 32-bit pre-dialing and error correction function.
• Tone or Pulse dial mode select, suitable for different type telephone systems. 
