The role of the switch

 generator Stator Rotor 
Specifications
1. 20 years manufacturing experience
2. competitive price,high quality
3. Accessories Series: stator and rotor

Telephone exchanges have four kinds of most basic call function, according to the access switches the call flow and the origin of the call, the call can be divided into: the bureau call, calling out, incoming calls and transfer the call. Understand switches as an exchange bureau, the bureau a user initiated calls, according to the call flow can be divided into out call or call. Calling user generated to words, called a user is another user in the bureau, the bureau call namely; Called user is not the user of electric fan motor the bureau, switches will need to call in to other switches, which form the out call. Accordingly, from other switches, switching speed, call a user of the bureau, to generate the incoming call; Call is not a user of the bureau, the switches and succeeded (exchange) to other switches, switches provide only tandem transfer function, the formation of transfer the call.

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

 In addition to the tandem office generally have only transfer "call" function, every telephone exchange bureau have the four call processing capacity. As for long-distance and special electric vehicle motor service call, is seen as a call to fixed out call. The PBX is the organ of industrial enterprises and mines in the internal telephone switching a special-purpose switches, its basic function motor electric is to complete the unit internal users can talk to each other, but also is equipped with in and out of the trunk can be connected to the PSTN network and network in the city of user calls (including local calls, domestic long distance calls and international calls). Because this kind of exchange is a special unit interior, therefore, can according to customer's need to increase the number of additional properties for the ease of use. So this kind of switch has great flexibility.