TABLE 1.1 you see below, shows you the comparison between SCS and non-SCS or conventional.

Table 1.1.   SCS and Non-SCS Comparison

System	SCS	Non-SCS / Conventional
Audio - Video	Cables are hidden in walls or ceiling Distributed audio-video Shared source devices Local control for source selection and volume	Cables are usually exposed Separate source devices for each space/room
Telephone	Up to four phone lines to each space/room Capable of handling phone system High-speed or dial-up internet access	Separate phone lines for each phone Limited to 2 phone lines for each space/room Dial-up internet access
Data	Domestic network Shared information and equipment Shared internet access Hi-speed network connection	None installed
Security	Integrated security devices with other devices in other system Shared security information is available	None installed

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