Tell you do not know about the standard technology of the router - the router-IT industry
Because of the current continuous progress of information society, people have increasing demand for data communication. Since the TCP / IP protocol family seven mid launch, has become Network The de facto standard communication protocol layer based on TCP / IP, the Internet has become the largest and most important network. Router As the core of IP network devices have been widely used ever.

Cisco CCIE Fundamentals
Using DDR, low-volume, periodic network connections can be made CCIE Examsover the PSTN. A routeractivates the DDR

Perspective: Building Intercom Technology Development Trends And Application
Building intercom system evolved from non-visible on black and white video intercom mentioned, black and white video of the mentioned type of security video intercom, but also to color video intercom, color video intercom network building can be developed to as the intercom (Family Intelligent Terminal), building intercom system from the development of independent systems to networked systems, from the way the bus network through the development of the semi-digital network, to further develop the use of mature TCP / IP network Technology Networking, from the single function type to the intelligent integrated control type, developed rapidly.

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