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DHS- L Instal lation
Slot >>>
Port
1
2
-- For T1IB --
3
4
Ports 1-24
5
6
Ext. 772-795
7
8
Running Cable
From the MDF location, run unshielded Category 3 (or equivalent) twisted cable to all key
telephone locations and DTMF single-line telephone locations.
Follow these guidelines:
Install proper type cable for the application according to the National Electrical Code
and local building codes.
Avoid cable runs parallel to fluorescent light fixtures or AC lines not in conduit. If
these obstacles are unavoidable, run the cables across them at right angles.
Do not run station cables inside electrical conduit already occupied by AC wiring. (To
do so is a violation of the National Electrical Code).
Do not run station cables near equipment with electric motors or through strong
magnetic fields, such as those generated by large copy machines, arc welding
equipment, heavy motors, etc.
Do not place station cables where they can be stepped on or where they can be
rolled over by office furniture.
If using multi-pair (25-pair) cable runs to multiple station locations do not include AC
ringing single-line sets, AC-ringing auxiliary equipment, or CO lines in a cable being
used for key telephones. Key telephones should always be isolated in separate
dedicated cable runs.
Do not exceed the measurements for the station cable lengths (using 26AWG wire)
listed in
Table 2-13: Default CO Trunk Directory Numbers
3
4
5
700
708
701
709
702
710
703
711
704
712
705
713
706
714
707
715
Use shielded cable if RFI/EFI is expected.
Table 2-8: Maximum Cable
Itis recommended thataminimumof 3-paircable and aminimum of 4-conductormodular
jacks be used for all station connections.
Chapter 2 - Description a nd Installation
6
7
8
716
724
732
717
725
733
718
726
734
719
727
735
720
728
736
721
729
737
722
730
738
723
731
739
Length.
9
10
11
740
748
756
741
749
757
742
750
758
743
751
759
744
752
760
745
753
761
746
754
762
747
755
763
2-41
12
764
765
766
767
768
769
770
771
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