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    • By Admin / 20 Oct 23 / 0 Comments

      VLAN ” Virtual LAN

      The VLAN (Virtual Local Area Network) is named in Chinese. A VLAN divides a physical LAN into multiple logical LANs, and each VLAN is a broadcast domain. Hosts in VLAN can communicate with messages through the traditional Ethernet communication mode, but between hosts in...
      VLAN ” Virtual LAN
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    • By Admin / 20 Oct 23 / 0 Comments

      The Calibration of the Optical Power Mete

      For optical communication, testing the optical power is an essential step in building the optical environment. The level of optical power affects the performance of the receiving device. Too low light power will make the device impossible to identify, and too high light ...
      The Calibration of the Optical Power Mete
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    • By Admin / 11 Oct 23 / 0 Comments

      The Driving force of VoIP

      Due to many developments and technological breakthroughs in the relevant hardware, software, protocols and standards, the widespread use of VoIP will soon become a reality. Technological advances and developments in these areas have contributed to the creation of a more ...
      The Driving force of VoIP
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    • By Admin / 11 Oct 23 / 0 Comments

      Relevant Technical Standards

      In order to implement multimedia applications on the existing communication network, the International Telecommunication Union (ITU-T) has developed the H.32x multimedia communication protocol series. The following is a brief description of the main standards H.320, the ...
      Relevant Technical Standards
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    • By Admin / 26 Sep 23 / 0 Comments

      The Basic Transmission Process of VoIP

       The traditional telephone network transmits voice by circuit exchange, and the required transmission broadband is 64 k bit/s. The so-called VoIP is based on IP packet switching network as the transmission platform, The analog voice signal is compressed, packaged and a s...
      The Basic Transmission Process of VoIP
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    • By Admin / 26 Sep 23 / 0 Comments

      Introduction to SFP Module Error Code Test

      SFP (Small Form-factor Pluggable) is an upgraded version of GBIC (Gigabit Interface Converter), which is an interface device for converting gigabit electrical signals into optical signals. The design can be used for hot plug, and the SFP interface is widely used in switc...
      Introduction to SFP Module Error Code Test
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