Telephone Cables

1.1

0.9

mm

Nominal Insulated Conductor Diameter

0.25

0.2

mm

Nominal Insulation Thickness

3600

3600

V DC

Dielectric Strength Conductor to Conductor 3secs

51

51

dB

Minimum NEXT pair-to-pair @100KHz

54

54

dB

Minimum NEXT pair-to-pair @80KHz

55

55

dB

Minimum NEXT pair-to-pair @60KHz

57

57

dB

Minimum NEXT pair-to-pair @40KHz

61

61

dB

Minimum NEXT pair-to-pair @20KHz

48

48

dB

Minimum ELFEXT pair-to-pair @100KHz

49

49

dB

Minimum ELFEXT pair-to-pair @80KHz

50

50

dB

Minimum ELFEXT pair-to-pair @60KHz

52

52

dB

Minimum ELFEXT pair-to-pair @40KHz

56

56

dB

Minimum ELFEXT pair-to-pair @20KHz

6.3

7.9

dB/km

Maximum Average Attenuation @100KHz

6.0

7.7

dB/km

Maximum Average Attenuation @80KHz

5.6

7.0

dB/km

Maximum Average Attenuation @60KHz

4.8

6.2

dB/km

Maximum Average Attenuation @40KHz

3.9

4.9

dB/km

Maximum Average Attenuation @20KHz

2625

2625

pF/km

Maximum Capacitance Unbalance @1KHz pair-to-ground

260

260

pF/km

Maximum Capacitance Unbalance @1KHz pair-to-pair

52

52

nF/km

Average Mutual Capacitance

2.5

2.5

%

Maximum Resistance Unbalance

16000

16000

Mohm.km

Minimum Insulation Resistance @500V DC

63

91

ohm/km

Maximum Conductor Resistance @20

Telephone Cables/The telephone cables are used as basic access for ISDN services in central office wiring