Installation
106
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
4. 7. 2
Network interfaces
Equipping the system with interface cards provides the necessary network inter-
faces. With the exception of the Ethernet interface, which also represents a network
interface via SIP access, there are no network interfaces on the Aastra 415/430
mainboard.
4. 7. 2. 1
Basic rate interface BRI-T
With the appropriate interface cards and Wiring Adapters, BRI network interfaces
can be made available at RJ45 sockets 1.x...4.x (for Aastra 415 1.x and 2.x only). The
possible RJ45 sockets are highlighted in colour in the figure below.
Fig. 31
Connection possibilities for BRI network interfaces
Notes
– The interfaces can be configured on BRI-S using the wiring adapters
(see
"Wiring Adapter", page 98
).
– The maximum number of interfaces per communication server has to
be taken into account (see
Tab. 30
).
– Circuit type as per EN/IEC 60950: SELV
The connection from the front panel to the NT1 (Network Termination) is via stand-
ard commercial straight patch cables with 8-pin RJ45 connectors on both sides.
With the appropriate tools you can also create your own cables.
Cable Requirements
Tab. 39
Cable requirements for basic rate interface BRI-T
Core pairs
cores
1
4 o 2
2
Stranded
yes
Wire diameter, core
0.4…0.6 mm
Screening
recommended
Characteristic impedance
< 125
(100 kHz), < 115
(1 MHz)
Wave attenuation
< 6 dB/km (100 kHz), < 26 dB/km (1 MHz)
Near/crosstalk attenuation
> 54 dB/100 m (1 kHz to 1 MHz)
