Get a Quote for Structured Cabling Installation Dorchester Massachusetts. Network Cabling Wiring provides Structured
Voice Data Cabling Wiring for commercial buildings offices and cubicles for local
area networks (LAN) Computer Networks, Phone Wiring and Jacks. We can install
coaxial cables cat 3, cat4, cat5 and cat6 fiber optic cables.
To this end, PTS' track record speaks for itself regardless of whether you require union or non-union labor. Our technicians and data cabling project managers are trained and BICSI certified to ensure that every installation we complete is done to exacting standards.
The second notice: If the first cabling system used 4 pairs, it was, because 2 pairs was planned for computer network and other 2 pairs was planned for voice communication. This was good up to 100Mbps networks. From 1Gbps networks, computers are using 4pairs and communication on this speed is only half-duplex. If you want have full-duplex communication on the 1Gbps speed, you have to use optical cabling.
The current 802.3at standard spilts systems into two categories for PoE levels based on the cable type. Type 1 covers cat 5 cables and these remain limited to the 802.3af limits of 13 W. Type 2 covers cat 5e (the actual minimum spec is ANSI/TIA/EIA-568-A-1995 which does cover some late cat 5 cables which only became available some time after 1995) and cat 6 cables and increases the maximum current to 600ma giving a maximum power figure of 44 x 600/100 = 26.4 W. Again due to losses over distance (lower than with Type 1 systems) this gives a figure of 25.5 W which is available even at maximum (100m - ~330ft) runs.
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