Installation
125
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
Installation rules
Always terminate the bus extremity with 2
100
(0.25 W, 5%)!
Note
Circuit type as per EN/IEC 60950: SELV
Cable Requirements
Tab. 57
Requirements for an S bus cable
Terminals
The ETSI protocol must be set in the interface configuration.
Up to 8 terminals of different types can be connected to one S bus.
• Standard ISDN terminals
• ISDN Terminal Adapter
• PC with ISDN card
• Group 4 fax machines
1)
, etc.
Two call connections are possible simultaneously for each S bus.
4. 7. 3. 3
FXS terminal interfaces
The FXS terminal interfaces of the mainboard are permanently routed to the front
panel and labelled accordingly. With the appropriate interface cards and Wiring
Adapters, additional FXS terminal interfaces can also be made available at the RJ45
sockets 1.x...4.x (with Aastra 415 only 1.x and 2.x). The possible RJ45 sockets are
highlighted in colour in the figure below.
Core pairs
cores
Stranded
Wire diameter, core
Screening
1
4 or 2
2
yes
0.4…0.6 mm
recommended
Ohmic resistance
Characteristic impedance
Wave attenuation
Near/crosstalk attenuation
< 98
/km (conductor), < 196
/km (loop)
< 125
(100 kHz), < 115
(1 MHz)
< 6 dB/km (100 kHz), < 26 dB/km (1 MHz)
> 54 dB/100 m (1 kHz to 1 MHz)
1)
Not possible within an AIN
