Content
Meaning
Example
C: physical slot
number
Numbered left to right and top to bottom with two
digits, such as 01.
D: interface
number
01.
R: optical
receiving
interface
T: optical
transmit
interface
-
DDF-MN-B-
C-D/R/T
MN: row
number and
column number
of a DDF
M: The rows of cabinets from front to back are labeled
from A to Z. N: The columns of cabinets from left to
right are numbered from 01 to 99. G01 is the DDF of
row G and column 01.
B: row number
of the terminal
device
Range: 01 to 99, such as 01-01.
C: row number
of the terminal
device
DDF-MN-B-
C-D/R/T
R: optical
receiving
interface
T: optical
transmit
interface
Usually, a DDF is marked "A" or "B."
A: indicates that the DDF terminal is connected to an
optical network device.
B: indicates that the DDF terminal is connected to a
switching device.
Label Example
shows an example of a label for trunk cables between the device and a DDF.
Figure A-87
Engineering labels for trunk cables between the device and a DDF
A01
R
TO:
03
01
01
DDF
AR
G01
01
01
The labels in
l
"A01-03-01-01-R" indicates that the local end of the trunk cable is connected to
receiving interface 01 on slot 01, chassis 03 in the cabinet in row A, column 01 in the
equipment room.
HUAWEI USG9500 Series
Hardware Guide
A Appendix
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
495
