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RC3000E (P100R001) Product Description
Multiplex Section
Protection (MSP)
R
RS232
RS422
S
Single-mode fiber
Slot
Subnetwork
Connection
Protection (SNCP)
T
Timeslot
Timeslot cross
connection
7.4 Acronyms and abbreviations
A
MSP is based on multiplex sections. Whether to perform switching
depends on the quality of multiplex section signals. Switching is
initiated by the APS protocol carried by the Multiplex Section
Overhead (MSOH). If a multiplex section fails, service signals of the
whole STM-N are switched to the backup channel.
It is an Asynchronous Transfer Mode (ATM), which does not
contain hand-shaking signals. It can carry on point-to-point
communication with RS232 and RS422 of other stations and the
transmission is transparent.
It is used to define the balanced circuit specification of electrical
parameters. The interface can change to RS232 through the jumper.
Others are identical with RS232.
In this fiber, single-mode optical signals are transmitted.
Time is divided into periodical frames. Each frame is divided into
several timeslots. Each timeslot is a communication channel
assigned to a user.
Transport entity protection for the case where the transport entity is
a subnetwork connection. The serial compound link connection
within the subnetwork connection is protected by adding bridges and
selectors in the connection functions at the edges of the protected
domain and an additional serial compound link connection between
these connection functions.
Time is divided into periodical frames. Each frame is divided into
multiple timeslots. Each timeslot is a communication channel which
can be assigned to a user.
With synchronous multiplexing mode and flexible mapping
structure, the SDH network can multiplex low-rate PDH tributary
signals (such as, 2 Mbit/s) into SDH frames (STM-N). In this way,
low-rate signals of different systems can be transmitted on the SDH
network.
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7 Appendix
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