Raisecom
RC3000E (P100R001) Product Description
7 Appendix
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
77
Multiplex Section
Protection (MSP)
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.
R
RS232
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.
RS422
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.
S
Single-mode fiber
In this fiber, single-mode optical signals are transmitted.
Slot
Time is divided into periodical frames. Each frame is divided into
several timeslots. Each timeslot is a communication channel
assigned to a user.
Subnetwork
Connection
Protection (SNCP)
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.
T
Timeslot
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.
Timeslot cross
connection
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.
7.4 Acronyms and abbreviations
A