Table of Contents
Advertisement
ZXR10 2900 Series User Manual
32
Confidential and Proprietary Information of ZTE CORPORATION
4. The meaning of the content and the structure of a fiber engi-
neering label are as shown in
F
26 PATTERN AND MEANINGS OF THE ENGINEERING
IGURE
LABEL ON THE OPTICAL FIBER
The two sides of the engineering label on the optical fiber are
marked "L" and "R" with the specific meanings as follows:
�
When the label is pasted on the fiber at the ZXR10
2920/2928/2952/2936-FI side, the row number and column
number of the cabinet at the side of the connected remote
optical interface device as well as the layer No. of the fiber in
the cabinet and the fiber No. should be filled in the R area of
the label. In this case, the row No. and column No. of ZXR10
2920/2928/2952/2936-FI where the fiber is located as well as
the layer No. of the fiber and fiber number shall be filled in
the L area of the label.
�
If the label is attached on the optical interface equipment of
the customer, contents filled on the label are just contrary to
those at the ZXR10 2920/2928/2952/2936-FI side.
Cable Lightning Protection
Requirements
According to the degree of hazard, lightning is classified into di-
rect lightning strike and lightning induction. The damage of direct
lightning strike is hard to avoid. But proper lightning protection
measure can effectively prevent the lightning induction. The fol-
lowing lightning protection requirements are proposed to reduce
the equipment failure rate in the areas where lightning is frequent.
1. The Ethernet switch shall be placed in the corridor, preferably
on the first floor.
lightning, the switch cannot stay in an outdoor place where
no weather-proof measures are taken. Ensure that all sub-
scriber lines, except the uplink, downlink, and cascading lines,
are distributed inside the building to avoid the attack of light-
ning induction.
Figure
26.
To avoid the direct sunshine, rains, and
Advertisement
Table of Contents
