Nortel Networks DCT1900 - Manual (Page 149)

Technical Product Manual - DCT1900
Installation Instructions, Modular Cabinet – Installation Steps
Install-DCT1900/R8/mw 3-1
© 2000-2005
C HAPTER 3
Modular Cabinet – Installation Steps
3.1 Introduction
Paragraph 3.2 describes the recommended board positions. This paragraph should be read
before starting any installation.
Paragraph 3.3 describes the main steps of installation and the order in which they should be
carried out. It can be used by inexperienced engineers, or experienced engineers as a reference
or check–list. Each step refers to a chapter where more information can be found.
Paragraphs 3.4 through 3.9 contain installation procedures which are not related to specific units
described in other chapters.
3.2 Recommended Board Positions
Recommendations are given for the system board positions below. These rules are given to
facilitate proper framing synchronization, avoid crossing of cables and to ensure sufficient length
of the dedicated cables.
Fig. 3–1 Recommended Board Positions
CPU
The CPU is always placed at the farthest left position in the cabinet. In a multi cabinet
configuration the CPU must be placed in cabinet 1 (refer to Figure 4-1 in Chapter 4).
Indicates that the CPU is required to be in this
position in cabinet 1
front view
C
P
U
D
L
U D
L
U
S
P
U
S
P
U
C
L
U
*
S
L
U
C
L
U
*
S
L
U
24 28 32 36 40 44 48 52 56
The board position numbers are not indicated on the rack unless
the labels are installed.
D
T
U D
T
U
L
T
U L
T
U