Aastra Ascotel IntelliGate 2065 - Page 781

Ascotel IntelliGate 2025/2045/2065
Part 4 Cabling interfaces 781
Cable Requirements
Tab. 4.42: Requirements for an S bus cable
Connection sockets
Fig. 4.60: RJ45 connection, single socket
Core pairs x cores
Stranded
Wire diameter, core
Screening
1 x 4 or 2 x 2
yes
0.4…0.6 mm
recommended
Ohmic resistance
Characteristic impedance
Wave attenuation
Near / crosstalk attenuation
< 98 Ω/km (conductor), < 196 Ω/km (loop)
< 125 Ω (100 kHz), < 115 Ω (1 MHz)
< 6 dB/km (100 kHz), < 26 dB/km (1 MHz)
> 54 dB/100 m (1 kHz to 1 MHz)
c
f
e
d
Fit resistors at bus extremity only
a
b
c
f
e
d
g
h
1
2
3
4
5
6
7
8
RJ45, 8-pin
100 Ω
100 Ω
haz0026aaena0
Front view
of RJ45
8
7
6
5
4
3
2
1
haz1127aaxxa0