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C
4
HAPTER
Table
4.10:Cabling for basic rate interface BRI-T, networked with leased-line or dial-up connection (Continued)
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See also
Chapter "Connections with basic accesses" in the PISN/QSIG Networking System Manual.
Primary rate interface PRI
:
NOTE
•
In normal operation the x.2 test socket must not be connected; otherwise faults may occur.
•
Circuit type as per EN/IEC 60950: SELV
With the interface cards TIC-1PRI, TIC-1PRI-T1
can be made available at RJ45 sockets 1.1, 2.1, 3.1 and 4.1. For test purposes the PRI interface is also
routed in parallel to ports x.2. The possible RJ45 sockets are highlighted in colour in the figure below.
:
NOTE
•
In normal operation the x.2 test socket must not be connected; otherwise faults may occur.
•
Circuit type as per EN/IEC 60950: SELV
Cable Requirements
The connection to NT1 (Network Termination) is implemented using commercially available screened
cables with 8-pin RJ45 connectors at both ends, e.g. S-FTP 4P, PVC, Cat. 5e.
Table
4.11:Cable requirements for the primary rate interface)
Core pairs ´ cores
Stranded
Wire diameter, core
Screening
Characteristic impedance
Wave attenuation
Near/crosstalk attenuation
1. TIC-1PRI not for USA/Canada, TIC-1PRI-T1 only for USA/Canada.
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Figure 4.23:
Connection possibilities for PRI network interfaces
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1
and wiring adapters WA-1PRI, PRI network interfaces
2 ´ 2 (short distances also 1 ´ 4)
yes
0.4...0.6 mm
yes
90 to 130 W (1 MHz)
lt; 6 dB/km (100 kHz), lt; 26 dB/km (1 MHz)
> 54 dB/100 m (1 kHz to 1 MHz)
C
ABLING INTERFACES
I
NSTALLATION
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115
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