2N TELEKOMUNIKACE a.s., www.2n.cz
368/377
Telephone Parameters (PSTN)
Parameter
Value
Conditions
Minimum line current
15 mA
off-hook
Minimum line voltage
22 V
on-hook
Off-hook DC voltage drop
< 8 V < 16 V
I = 25 mA
I = 50 mA
Off-hook resistance
>1MΩ
U = 25..100 V
Off-hook impedance
220 Ω + 820 Ω paral. 115 nF
20 to 60 mA
Return loss
> 14 dB
20 to 60 mA
Bandwidth
300 to 3500 Hz
20 to 60 mA
Ringing impedance
> 2 kΩC = 1 μF
25 to 50 Hz
Ringing detector sensitivity
10 to 20 V
25 to 50 Hz
Pulse dialling
40 / 60 ms
DTMF dialling level
6 a 8 dB ± 2 dB
20 to 60 mA
Dial-tone detector sensitivity
approx. 43 dB
Overvoltage protection – between A, B
1000 V
8 / 20 μs
Notes
All the product parameters comply with TBR-21 on condition that the
product is to be operated as a single line terminal, i.e. no parallel
connection with any other equipment is allowed.
Line interference and noise picked up by the
microphone are relevant
L8
factors.
Summary of Contents for Lift8
Page 1: ...www 2n cz 2N Lift8 Communicator for lifts User Manual Firmware Version 2 3 1 ...
Page 28: ...2N TELEKOMUNIKACE a s www 2n cz 28 377 Indication Elements ...
Page 40: ...2N TELEKOMUNIKACE a s www 2n cz 40 377 Examples of Connection ...
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Page 136: ...2N TELEKOMUNIKACE a s www 2n cz 136 377 User name Admin Password 2n ...
Page 202: ...2N TELEKOMUNIKACE a s www 2n cz 202 377 Connection two cabin lift ...
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