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3 Board
3.19 ASU
3.19.1 Functions
In addition to E1 transmission, the BTS30/312 also provides the built-in transmission system
that supports external optical transmission ports, such as the 155 M SDH optical port and
PON optical port. The SDH transmission mode is realized with Huawei OptiX 155/622
ASU.
The BTS3006A/3012A can be configured with optical transmission devices. It does not
support the configuration of the ASU.
The ASU has the following functions:
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3.19.2 Panel
Figure 3-40
3-58
Providing photoelectric conversion function.
Can be configured as a terminal mulitplexer (TM), add/drop multiplexer (ADM) or
regenerator (REG) according to topology demands.
Can be configured as a ring network, chain network and point-to-point (P2P) network
topology. With OptiX 155/622H and OptiX 155/622B, it can also be configured as one of
the following complex network structures, such as star, tangent ring, dual ring or chain in
ring.
Providing the 64 kbit/s sub-rate crossing function for the first four inter-E1.
Providing four E1 ports with the re-timing function.
shows the ASU panel.
Huawei Technologies Proprietary
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
Issue 01 (2006-11-18)
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