Section 363-718-100
Revision 01
Page 11
9. INSTALLATION REQUIREMENTS
9.01
The following installation requirements apply:
1. Environmental Considerations. The
COT is designed to operate in a central
office environment. It can operate in a
temperature range of -40°C to +65°C and
a humidity range of 5% to 95% (non-
condensing).
2. Mounting. The COT mounts in standard
central office 19-inch or 23-inch frames
and includes mounting hardware.
3. Power. The COT uses –48V dc central
office battery. This voltage must be fused
with a 8-amp fuse at a fuse point on a
fuse panel in the central office. This fuse
should be removed until the COT is wired
and ready for turn-up. This battery line
and its matching return line shall be run
from the fuse panel to the COT mounting
frame using 12 AWG wire. This cable
should be run down the left side of the
frame.
4. Alarm Leads. Audible and visual alarm
leads from the central office alarm panel
to the COT need to be provided. Alarm
leads should be run down the left side of
the COT mounting frame.
5. HDSL Lines. Two pair of leads from the
COT shelf to the HDSL pair tips and rings
at the Main Distribution Frame (MDF)
must be provided. These leads should be
run down the left side of the frame.
Note: If the COT is to support two
systems on a single shelf, then a second
set of HDSL leads must be provided (one
set to each RT).
6. Subscriber Lines. Two 25-pair
Amphenol-ended (female) cables need to
be provided for connecting the COT to the
central office switch subscriber line
circuits at the MDF. These cables should
be run down the right side of the frame.
Note: If the COT is to support two
systems on a single shelf, then four
cables must be provided.
7. Metallic Bypass Pair. A metallic bypass
pair is required for subscriber drop
testing. This pair should be run down the
left side of the frame.
Note: If the COT is to support two
systems on a single shelf, then two
bypass pairs must be provided (one to
each RT).
10. MOUNTING
10.01
The COT shelf mounts in a standard 19-inch
or 23-inch central office frame and requires
four standard vertical mounting spaces. Shipped with
the COT shelf are universal mounting brackets and
mounting screws.
11. WIRING
11.01
All wiring and connections to the COT shelf
are done on the backplane. Temporarily
remove the clear Plexiglas cover while performing the
procedures described in Table 12.
12. TURN-UP AND TESTING
12.01
Refer to the COT or RT Line Unit Technical
Practices for complete COT and RT turn up
and testing procedures.
13. TROUBLESHOOTING
13.01
Refer to the COT or Line Unit Technical
Practices for complete COT and RT
troubleshooting procedures.
