Dowtelecom Inc. DTT-1900 User Manual
DTT-800/1900 Operating Manual
5
1.2 Name and function of each part
l
POWER LED
LED lights on in red when the external power is supplied.
l
BATTERY LED
Indicates the status of backup battery.
The terminal can be operated if the backup battery is connected, even though the external power
supply is stopped.
Please refer to following table for the LED operation.
- From the moment that battery LED blinks, a phone call is possible for about 10 minutes.
The terminal can be operated if the backup battery is connected, even though the external power
supply is stopped.
Please refer to following table for the LED operation.
- From the moment that battery LED blinks, a phone call is possible for about 10 minutes.
Battery Power (V)
Battery Level
Battery LED
Power LED
Terminal
Status
6.6 ~
5
Green
Off
Normal
6.1 ~ 6.5
4
Green
Off
Normal
5.8 ~ 6.0
3
Orange
Off
Normal
5.6 ~ 5.7
2
Orange & Blink
Off
Normal
Warning Tone
~ 5.5
1
Off
Off
Power off
External power
supply
Off
Red
Normal
SERIAL PORT
ANTENNA
RJ-11 JACK
DC JACK
POWER SWITCH
SERVICE LED
BATTERY LED
POWER LED