Huawei DBS3900 Installation Manual page 144

DBS3900 (ICR)
Installation Guide
Context
Table 15-8
cables are connected. For details about the BBU interconnection, see Inter-BBU Signal Cable
Connections.
Table 15-8 Ports to which inter-BBU signal cables are connected
Scenario
UCIU+UCIU
The performance of an optical module that is exposed to the air for more than 20 minutes may
be abnormal. Therefore, you must insert a fiber optic cable into an unpacked optical module
within 20 minutes.
Issue 12 (2015-04-30)
– The interconnection signal cable between the WBBPf boards in two BBUs must be a
QSFP cable.
NOTE
l Single-mode optical modules are labeled as SM and multimode optical modules are labeled as
MM.
l The puller of a single-mode optical module is blue. The puller of a multimode optical module is
black or gray.
l
Figure 15-32 shows the label on an optical module.
Figure 15-32 Label on an optical module
(1) Maximum rate
lists the BBU interconnection scenarios and the ports to which inter-BBU signal
Installation Position
BBU 0
M0 port on the UCIU
NOTE
BBU 0 is the root BBU, and BBU 1 is the leaf BBU.
NOTICE
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(2) Wavelength
15 Installing Cables
(3) Transmission mode
BBU 1
S0 port on the UCIU
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