1.5 Specifications
1-8 System Outline
1.5.2 Characteristics
Station Loop Limit KX-T7420 / KX-T7425 / KX-T7431 / KX-T7433 / KX-T7436 /
KX-T7220 / KX-T7230 / KX-T7235 / KX-T7250 / KX-T7020 /
KX-T7030 / KX-T7050 / KX-T7055 / KX-T7130.........40 ohms
Standard Telephone..................................600 ohms including set
Doorphone................................................20 ohms
Minimum Leakage Resistance 15,000 ohms
Maximum Number of Station Instruments per Line
1 for KX-T7420, KX-T7425, KX-T7431,
KX-T7433, KX-T7436, KX-T7220, KX-T7230,
KX-T7235, KX-T7250, KX-T7130, KX-T7020,
KX-T7030, KX-T7050, KX-T7055 or standard
telephone
2 by Parallel or eXtra Device Port Connection of a
proprietary telephone and a standard telephone
Ring Voltage 80 Vrms at 25 Hz depending on the
Ringing Load
Central Office Loop Limit 1,600 ohms max.
Environmental Requirements 0 – 40 °C / 32 – 104 °F, 10 – 90% relative humidity
Hookswitch Flash Timing Range 204 – 1,000 milliseconds
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