GAI-Tronics 1099 Посібник з встановлення та експлуатації - Сторінка 15
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9.
Technical Specifications
Operational Requirements
Systems.
Not suitable for
connection to:
Telephone line
parameters
(without
supplementary
power supply)
With
supplementary
power supply
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
Hookswitch
Ringer loudness
Call termination
VR & Help Point
•
Analogue Public Switched Telephone Network (PSTN)
•
Private Automatic Branch Exchange (PABX)
•
Payphone extensions
•
Public Emergency Telephone System (PETS)
•
Ring Voltage: 40V to 100V rms, 20Hz to 50Hz
•
Line voltage 20 to 70 Vdc
•
Loop current ≥ 25mA
•
Ring Voltages down to 30V
•
Loop current down to 15mA
•
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
Electronic with no external moving parts
80dBA @ 1m
Calls started from the hands-free telephone can terminate in
one of three ways:
•
Polarity reversal of DC feed
•
K-break (interruption of loop current > 50ms)
•
Call progress tone: a tone received on the line, in the
frequency range 280 – 550Hz, either:
A continuous tone for 5s, or
o
A repeated tone ("beep") for 5 identical repetitions.
o
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