75
2N TELEKOMUNIKACE a.s., www.2n.cz
6.1 Technical Parameters
Electric Parameters
Parameter
Value
Conditions
Minimum line current
15 mA
off-hook
Minimum line voltage
22 V
on-hook
Off-hook DC voltage drop
< 9 V
< 12 V
I = 20 mA
I = 50 mA
On-hook resistance
>1 MΩ
U =
25..100 V
Off-hook impedance
220 Ω + 820 Ω paral. 115 nF
15 to 60
mA
Return loss
> 14 dB
15 to 60
mA
Bandwidth
300 to 3500 Hz
15 to 60
mA
Ringing impedance
> 2 kΩC = 0.47 μF
25 to 50 Hz
Ringing detector sensitivity
10 to 20 V
25 to 50 Hz
Pulse dialling
40 / 60 ms
DTMF dialling level
-9.0 +2.0/-2.5 dB and -11.0 dB
+2.5/-2.0 dB
15 to 60
mA
Overvoltage protection –
between A, B
1000 V
8 / 20 μs
Notes:
1) Any ringing course is accepted.
Switch Parameters
:
Minimum voltage
9 V AC / DC
Maximum voltage:
24 V AC / DC
Maximum current:
1 A AC / DC
Resistance – open:
min. 400 kΩ
approx.
Resistance – closed:
0.5 Ω
Fuse:
resettable
Connection of External Indicators
12 – 24 V
Supply voltage:
DC, external power supply
Maximum switched current:
200 mA
