GAI-Tronics 1090, Инструкция по установке и эксплуатации

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VR & Help Point 19
10. Technical Specifications
Operational Requirements
Systems.
•
Analogue Public Switched Telephone Network (PSTN)
•
Private Automatic Branch Exchange (PABX)
Not suitable for
connection to:
•
Payphone extensions
•
Public Emergency Telephone System (PETS)
Telephone line
parameters
(without
supplementary
power supply)
•
Ring Voltage: 40V to 100V rms, 20Hz to 50Hz
•
Line voltage 20 to 70 Vdc
•
Loop current
≥
25mA
•
Max loop resistance 2800 Ω
•
Line impedance 270R + 750R||150nF as defined in ETSI
standard ES 203 021 (previously TBR21)
With
supplementary
power supply
•
Ring Voltages down to 30V
•
Loop current down to 15mA
Note : these telephones have been designed for pan-European single terminal connection
to the PSTN. However, due to differences between the individual PSTNs & PABXs provided
in different countries, this does not, of itself, give an unconditional assurance of successful
operation on every PSTN or PABX termination point.
Product features
Power supply
•
Can operate from line power only.
•
Supplementary power supply input (non-isolated)
provided as standard. 12Vdc (±1) @ 250mA min.
•
Supplementary power will enhance ringing and audio
quality.
•
Supplementary power is required for induction loop and
external relay options.
•
Isolated power supply input is available as an option
•
GAI-Tronics cannot accept responsibility for the
performance of any 3rd party supplied power supply. If
in doubt always use a power supply provided by GAI-
Tronics.
Hookswitch Electronic with no external moving parts
Ringer loudness 80dBA @ 1m