Nortel Meridian 1 Option 11C Planning And Installation Manual page 58

Page 58 of 408 System and site requirements
553-3021-210 Standard 7.00
• Do not place the cross-connect terminal above a cabinet. Debris from the
cross-connect terminal may drop into the cabinet through the top
ventilation slots and cause damage.
• Allow adequate space for the battery backup unit, accounting for the
cable-length limitation as determined by the choice of a wall-mounted or
floor-mounted battery back-up unit.
• If the NTAK92 Off-premises protection module is used, allow for proper
installation (according to local practices)
• Ensure power outlets are within reach of each system cabinet. Cable and
wire specifications are shown in Table 2, "Cable and wire
specifications," on page 31.
Additional considerations for multiple-cabinet systems
For multi-cabinet systems the following guidelines apply for both horizontal
and vertical expansion:
• The maximum distance between the main cabinet and each expansion
cabinet is 1.8 mi (3 km).
• The minimum distance between cabinets when mounted above one
another (vertical expansion) should be 12 in. (305 mm).
• The minimum distance between cabinets when mounted next to each
other (horizontal expansion) is defined by an alignment bracket as shown
in Figure 21 on page 62. However, this is the minimum distance; the
cabinets can be positioned further apart to suit site requirements.
Note: The equipment layout plans shown in this chapter are applicable
to fiber-optic connected cabinets installed within close proximity to each
other (such as on the same wall). These layout guidelines are not as
stringent if the cabinets are located in separate rooms, on different floors,
or in different buildings.
Systems using NTAK75 or NTAK76 reserve power
The mounting location of either the NTAK75 or the NTAK76 backup-up unit
is governed by the location of the Option 11C cabinets and the length of the
NTAK0410 cable. The NTAK0410 cable is 6 ft (1830 mm) long.
January 2002