Frequency Band: 1.9 GHz Signal Range: 1.92 to 1.93 GHz Caller ID: Support for multiple Caller ID standardsETSI, DTMF, British Telecom, Bellcore Type 1 Additional Features: Audio Bandwidth: 80Hz - 11,000Hz Channels: 2 or 4 microphone channels per system Noise Cancelation: Active on the microphone Echo Cancelation: Acoustic echo canceller for speaker/microphone; Line echo canceller for analog telephone line RF Shield: No cell phone interference due to FR Armor technology Display: High resolution color LCD display Phonebook: Up to 99 entries Keypad: 12 key telephone keypad, 2 context sensitive soft keys answer/hang-up keys, 5 key cursor and control panel Analog, 2 omnidirectional microphones Display: High resolution color LCD display Power: Base Station: DC 5V, 5W Charger Tray: DC 15V, 15W...