What is a switch?
The switch is a multi-port device, the Layer 2 switch is used for fast forwarding of data frames, and the Layer 3 switch also has the...
Typical SFP module
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2/4 wire E&M interface
Backbone communication network
Business grooming and scheduling capabilities
Common OTN devices in the network
Common routing protocols
Communication auxiliary equipment technology
Distribution network technology and equipment
Equipment for data network
Features of SDH
Function of the control board
Functions of the main board
Functions of the main control board
FXO voice interface board
FXS voice interface
Interface module of the router
Main boards of OTN equipment
Main control board
Management needs
Multiplexing and mapping mode of SDH equipment
Passive optical network
PCM device interface type
PCM device type
Power Board
Power distribution demand
Role of the switch
Scheduling requirements
Substation demand
Technical Features of OTU2-XP
Terminal communication access network
The basic transmission principle of SDH
The most common device in the network
Topologies supported by ROADM technology
Transmission demand
Typical SFP module
V.24 data interface board