Chapter 5: Installation
Connecting Station Cables to a European System
Page 5-82 Inter-Tel
®
5000 Installation Manual – Issue 2.4, May 2008
Figure 5-47. SLA Terminations for Single Line Endpoint with a European System
The SLA is supported with two Western Electric to BT converters (part no. C74) for use when
the attached devices are near the SLA. For longer range connections (up to 4.5 Km), an
additional Krone block is required. This is connected to the SLA using a standard line cord—
part no. C27—and line jack unit (LJU).
Where exposed OPX cabling is used, also use BT14A/1 of BT21A surge arrestors on the OPX
lines, and ensure the Krone field is earthed. Make the LJU at the far end of the cable a line
master. This entire setup might be part of the main MDF or situated remotely, subject to
chassis-to-SLA cable restrictions.
Figure 5-48. Off-Premises Connection [Europe Only]
Endpoint LJU
AC Desktop Converter
Western Electric
to BT Converters
(C74)
SLA
To
DEM-16
Block
BL/WH
5
3
1
6
4
2
1
2
3
6
5
4
WH/BL
OPX LJU
Connection Details
5
3
1
6
4
2
1
2
3
4
5
6
7
8
9
0
To OPX
(3) (4)
RUN BUSY BUSY
SL1 SL2
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