On one hand, must protect existing investment in hardware,
application for some good application software can be protected
and, if possible, use of public domain and existing
communications resources to form a wide area network, avoid
significant investment on the communication line. The other hand,
short replacement cycle due to network devices, application
needs change very frequently, so if the network is designed, as
far as possible to prevent network equipment quickly eliminated.
As the application needs of the development and expansion of the
scale of the network, the network should have a good programme
of open and scalable to ensure increased network node, the
expansion of business volume growth, networking the extension
distance and multi-media application. For example, you can use
standard interfaces and protocols, networking equipment and
network topology with excellent expandability as possible
method of structured cabling system. Choice of network design
and network equipment to comply with international standards
and industrial standards, enables the network to have a high
degree of openness, and taking into account the future investment
in the equipment provided by the technical compatibility. At the
same time, network design must fully take into account the
current situation at the same time, must also take into account the
longer-term needs of the business development in the future.
1111 of the other party must also be extensions of leave sufficient
room for your network, select a tile, and with good mutual
compatibility and interoperability of devices and software
products, software development should pay attention to when in
conjunction with other products, for consistency. Wireless LAN
standard update soon, new products are constantly emerging,
while designing and planning for wireless LAN system, taking
into account their compatibility, interoperability, and the future
development of new technologies impact on existing systems, to
the future of new technologies to ensure a smooth transition,
protecting early input.