User's Manual

EX7100 Technical Manual - Appendix B
©1999 Exicom Technologies (1996) Ltd B-1 Issue 0 – May 2000
Appendix B
Options
B.1 Line Terminating Frame
The Line Terminating Frame (LTF) allows easy termination of six 2-wire circuits at both
the exchange and subscriber ends of the radio link. This rack, or wall, mounted frame is
an ideal connection point for reticulation of subscriber line cabling and may be ordered
with various termination types, as well as Primary Lightning Protection circuitry, if
required.
The LTF is based on the proven Krone modules, and is available with either:
> Standard Krone LSA terminations,
> Standard Krone LSA and Screw terminations,
> Standard Krone LSA and RJ12 terminations.
The LTF may be ordered as a stand-alone item, or may be factory wired into the EX7100
Line Interface cable.
Primary Lightning Protection
Although the EX7100 Terminal has built-in secondary protection, Exicom strongly advises
that Primary Lightning Protection be incorporated into any system design.
The LTF is capable of housing the Krone ‘Comprotect’ range of Lightning protection
modules. These modules provide protection of individual circuits, reducing the cost of
other, 10-pair, module systems.
Exicom offers the choice of two protection modules, one giving a simple Gas Arrester
level of protection, and the other giving 5-point solid-state protection.
Both modules simply plug in to the LTF, and are easily replaced once activated.
Note: The LTF requires a solid earth connection to the same point as the earth
connection between the EX7100 terminal and the equipment rack. An earth
termination is provided within the LTF.