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News
Industry Information
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Is the PCM device the same as the program-controlled switch?
The PCM device is a device that implements the remote extension of the subscriber line and is used for user service access, multiplexing, and transmission, and does not process user services.The program-controlled switch …
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Why need to add pcm equipment to the machine room?
First of all, you have to understand what a PCM device is and what is an optical transceiver. Then will know why the PCM equipment is added to the equipment room.The role of PCM device in a communication system is to tran…
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The difference between MSTP and SDH optical transmission device
MSTP deviceThe SDH-based multi-service transmitting platform refers to a multi-service node that provides unified network management by simultaneously accessing, processing, and transmitting services such as TDM, ATM, and…
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PCM equipment in radar communication system applications
The PCM device system is the most commonly used integrated access communication device in Chinese enterprises. It uses the standard E1 data transmission channel and adopts PCM system to directly provide various user inter…
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What is the signal of the PCM signal
The complete definition of PCM is to transform the sampled quantized values of the analog signal into a code called pulse code modulation (PCM device).In a fiber-optic communication system, a binary optical pulse "0&…
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PCM device broadcast transmission method
PCM device broadcast transmission refers to one way transmission method from one transmission point/signal source to multiple receiving points.Different from the traditional PCM device transmission mode, the broadcast mod…
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PCM function
The PCM device functions are mainly divided into four parts: access and multiplexing, time slot crossing, 2M line protection, and interface test functions.Multiplexing function:User service access and multiplexing is the …
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PCM expansion slot
The expansion slot is to expand the slots for some other functional devices according to the needs of users. The PCM expansion slot can also be compared with the computer motherboard expansion slot. The two uses are simil…
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SDH optical transceiver main application
The optical transceiver is the terminal device for optical signal transmission. The optical transceivers should be classified into video optical transceivers, audio optical transceivers, data optical transceivers, Etherne…
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Private network users build future-oriented multi-service IP bearer network
Development BackgroundFor many years, traditional TMD (Time Division Multiplex) switching technology is one of the core technologies in multi-service bearer networks. However, with the rapid development of the technology …
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E1 framing and unframed structure
First of all, it needs to be explained that E1 adopts the European standard, and each E1 is divided into 32 time slots, which are 0~31 time slots, each time slot is 64k, that is 32*64k=2048k, which is equal to 2M, because…
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Principle and application of PDH equipment
With the development of communication in the 5G era, the popularity and wide application of the network, and the new addition of new telecom services have emerged, and higher requirements have been placed on the reliabili…
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Networking scheme of ZMUX-30PCM multi-service multiplexing equipment
1. Power dispatch automation communication network solutionDescription of the power dispatch automation communication network - program:Conditional: An SDH transmission network exists between the central office station an…
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120 channel telephone (point-to-multipoint solution)
According to customer needs, 120 channel automatic telephone numbers are required, and the transmission line requires fiber or 4*2M bandwidth.Because one 2M bandwidth can only transmit 30 channel telephone, 120 channels /…
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The difference between SDH and PDH
SDH is an upgrade of PDH. PDH (Plesiochronous Digital Transmission System) is the main transmission system used in the Internet. However, with the rapid development of the Internet industry, the amount of information tran…
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