Samsung OfficeServ 7070 - Transmission Characteristics; Line Conditions

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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