Installation
135
Mitel SMB Controller
syd-0657/2.0 – R6.0 – 09.2018
of interface cards (ETAB4) have a no-load voltage of 53 VDC. The loop current is lim-
ited to 25 mA on all ports.
Tab. 58
Cable requirements for FXS mode: Phone/fax
In this mode 2-wire door intercoms with DTMF control functions can be connected. The
no-load voltage in this mode is 24 VDC. The loop current is limited to 25 mA.
Fig. 53
Connection for FXS mode: 2-wire door
Tab. 59
Cable requirements for FXS mode: 2-wire door
Ports FXS1...FXS6
Ports of interface cards (ETAB4)
Core pairs
×
cores
1
×
2
1
×
2
Stranded
only with lengths > 200 m
only with lengths > 200 m
Wire diameter, core
0.4 … 0.8 mm
0.4 … 0.8 mm
FXS resistance
max. 2
×
625
Ω
max.
2
×
250
Ω
Line length 0.6 mm diameter
max. 10 km
max. 4 km
Screening
not required
not required
Core pairs
×
cores
1
×
2
Stranded
only with lengths > 200 m
Wire diameter, core
0.4 … 0.8 mm
FXS resistance
max. 2
×
200
Ω
Line length 0.6 mm diameter
max. 3 km
Screening
not required
a
b
FXS interface