Second, with eight small telephone exchange 

 Phone outside the two switches can extend into 8 extension, allowing the use of all the extensions at the same time without disturbing each other. 
 Call quality is not outside the distance limit, no matter how many extensions do not access the bureau would have any impact. 
 Extension can be telephones, fax machines, answering machines and computers and any other telecommunications products, the inherent extension 
 Function is still valid. This switch provides two kinds of computer and manual shift mode, shift mode, your computer 
 Can be your own telephone number, name or unit name of the input switch, suggesting that foreign, to establish a corporate image, 
 Improve efficiency, savings in staff costs purposes. Improved anti-jamming, anti-theft fight lightning, and performance 
 180-volt power supply to meet the range of up to 240 volts, to adapt to harsh environments. Beautifully thin design, with a variety of work 
 As a status indicator to make it elegant, second to none. The switch powerful, performance, 
 Easy to use, is the ideal family unit and expansion of telephone equipment.