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151MD Evolution – Cordless DT590
Reference
Performance
Stand-by time up to 140 hours
Speech time up to 20 hours
Charge time 4 hours maximum
Headset specifications
Microphone level range From -43dB/Pa to -36dB/Pa
DC resistance 1.5 to 5 kOhm at microphone bias
voltage 1.5V via 2.2 kOhm
Speaker impedance > 30 Ohm
Note: If a headset with a hook toggle
switch is used, the microphone will
be short-circuited when the switch is
pressed.
Volume
Ringing signal Nine-step adjustable volume
Earpiece Ten-step adjustable volume
Ringing signals (defaults)
External call 0.4 s on, 0.2 s off, 0.4 s on, 5 s off
Internal call 1 s on, 5 s off
Callback 0.32 s on, 0.2 s off
Phonebook
Maximum name length 12 characters
Maximum number length 24 digits
Entries max. 100 in the personal phonebook
External interfaces
Radio connection DECT GAP/CAP, 1880-1900 MHz
(standard), 1900-1920 MHz (China),
1910-1930 MHz (Latin America), up to
250 mW radiated power during 1 of the
24 time slots
User interface Display with two lines of
12 alphanumeric characters and 7 icons,
keys with text, volume keys on the side.
Accessory connector For battery charging.