Optical Cable
Provider
Engineeri
ng Party
Recommended Solution
Remarks
Huawei
Huawei
Solution 1 is preferred. If
solution 1 fails to
implement, Huawei is
required to communicate
with the customer about
engineering risks and sign
a memorandum with the
customer before using
solution 2.
If solution 1 is used, the
engineering quality must strictly
comply with engineering
specifications.
If solution 2 is used, the network
box must be securely grounded.
In addition, a metal protective
cover must be installed between
the fiber strength member and
network box fixing points,
preventing
sparks
from
spreading if the fiber strength
member connects to a heavy-
current power line.
Customer
Solution 1
If the engineering does not
comply with solution 1, the
customer must take
consequences.
Customer
Huawei
Requirements: During
engineering, do not route
the fiber strength member
into the network box. In
addition, ground the fiber
strength member and the
network box separately.
Install the network box
and MxU based on the
instructions provided in
this document.
The customer must ensure that
the fiber strength member is not
be routed inside the network
box. Otherwise, the customer
must take consequences.
Customer
Grounding solution 1: The fiber strength member is isolated from the network box and grounded
outside the network box.
This solution prevents the introduction of sudden heavy currents into the network box, thereby
protecting the device inside the network box against heavy currents. (A long-distance armored
optical cable may introduce sudden heavy currents into the network box if the outer insulation
layer is broken and connects to a heavy-current power line.) Solution 1 is implemented as
follows:
1.
Strip the outer insulation layer and armored tube from the fiber strength member at the
ground point. Then, clean bare optical fibers and use a protection tube to protect them. (Use
outdoor tubes in outdoor scenarios and common tubes in indoor or corridor scenarios. Use
