Installation
146
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
Fig. 57
Connection for FXS mode: Phone/fax
Ports 1.5 and 1.6 on the call manager card and in each case the first two ports of
FXS cards (X.1 and X.2) are designed for long lines. The no-load voltage at these
ports is 51 VDC. All the other ports have a no-load voltage of 30 VDC. The loop cur-
rent is limited to 25 mA on all ports.
Tab. 69
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. 58
Connection for FXS mode: 2-wire door
Ports for long lines
Normal ports
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
max. 2
250
Line length 0.6 mm diameter
max. 10 km
max. 4 km
Screening
not required
not required
a
b
FXS interface
a
b
FXS interface