2014年11月13日星期四

Circuit switched network users


generator Stator Rotor 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Accessories Series: stator and rotor 
User role is to achieve a variety of Subscriber Line Circuit and the connection between the exchange, and often called Subscriber Line Interface Circuit (SLIC, Subscriber Line Interface Circuit). According to different switch system and the application environment, the user circuit also has a variety of types, for SPC digital exchange, at present there are mainly connected to the analog phone analog subscriber line circuit (ALC) and the digital telephone, data terminal (or terminal adapter) to digital subscriber line circuit (DLC). Analog subscriber line circuit is adapted to simulate a user environment and configuration of the interface, its basic features; Through the subscriber line feed (' feed) : switch to the common Battery telephone dc feeder; Over voltage Protection, Overvoltage Protection) : prevent damage of users impact line voltage or over voltage and switches. Ringing (Ringing) : to the called rotor stator pump party phone feed fluid flow. 


CCC,CE Certification and Waterproof Protect Feature ac motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 220V 

Rated Frequency: 50Hz or 60Hz 
Monitoring (Supervision) : with the help of scanning point monitoring user line on and off state, to detect the unit water pump pick machine, hang up and dial pulse, subscriber line signal to control equipment, in order to represent the busy idle state of the user and connection requirements. Decoding (CODEC) : using the encoder and decoder (CODEC), filter, complete with analog voice signal module, digital switching network interface with digital switches. Hybrid (Hybrid) : to convert the subscriber line by 2/4 lines, in order to meet the codec and digital switching on four wire transfer request. Test (Test) : provide Test port, user testing motor electric of the circuit. The seven kinds of commonly used functions of the first letter abbreviation (BORSCHT) representative. For simulation of SPC exchange, do not need to decoding function; And in the digital program-controlled switches, in addition to specific application mode of small switches use of delta modulation, most other adopts PCM codec. Digital subscriber line circuit is SET up in order to adapt to digital user environment and interface, it is mainly used to pass line adapter (LAM) or digital phone (SOPHO - SET) with all sorts of data terminal equipment (DTE) such as computer, printer, VDU, telex.

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