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7. Technical parameters
Parameters
Value
Conditions
Minimal line current
18mA
Line OFF HOOK
Minimal line voltage
18V
Line ON HOOK
Line voltage during OFF
HOOK (VA characteristic)
< 8V
< 12V
I = 20mA
I = 60 mA
Downlead during ON HOOK
< 30uA
U = 60V
Line termination impedance
220R +
820R
paral. 115nF
Line OFF HOOK
Bandwidth
300Hz – 3400 Hz
20 - 60mA
Ringing impedance
> 2Kohm
25 – 60 Hz
Sensitivity of ringing
detector
min. 10 – 25 V
Pulse dial
40 / 60 ms
Tone dial level
-6 and -8 dB
20 – 60 mA
Sensitivity of tone dial
min. -40 dB
20 – 60 mA
Sensitivity of tones detector
min. -30 dB
20 – 60 mA
Powering of backlight, relays
and heating
12Vss ± 2V , 10-12Vst ± 2V
Max consumption of
backlight and heating
250mA
12Vss
Max voltage of relay contact
48V
when I < 1A
Max current of relay contact
1,5A
when U < 30 V
Operation temperature
-20 to +60°
IP rate
IP44
