Transmission Characteristics; Line Conditions - Samsung OfficeServ 7070 System Description

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3.2.2 Transmission Characteristics


Attenuation

Attenuation between subscribers: Less than 6 dB

Attenuation between the subscriber and local trunk line: Less than 0.5 dB
Characteristic resistance of the line: 600 Ω


Weighted noise: Less than -65 dBm

Crosstalk attenuation: Less than -68 dBm

Frequency band: 300~3400 Hz
Insulation resistance: More than 1 MΩ


3.2.3 Line Conditions


Length for installation:

Regular phones: Up to 1 km (When the AWG #24 cable is used)

Digital phones: Up to 400 m (When the AWG #24 cable is used)

Door phones: Up to 400 m (When the AWG #24 cable is used)

AOMs: Up to 400 m (When the AWG #24 cable is used)
Leakage resistance between lines: More than 20 KΩ

Leakage resistance between grounds: More than 20 KΩ

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