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2. Power over Ethernet - Wikipedia

   en.wikipedia.org/wiki/Power_over_Ethernet

   Power is supplied as a common-mode signal over two or more of the differential pairs of wires found in the Ethernet cables and comes from a power supply within a PoE-providing networking device, such as an Ethernet switch, or by a PoE injector, a PoE power source that can be used in combination with a non-PoE switch.

3. IEEE 802.3 - Wikipedia

   en.wikipedia.org/wiki/IEEE_802.3

   IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet.The standards are produced by the working group of the Institute of Electrical and Electronics Engineers (IEEE).

4. Closed-circuit television - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television

   The first IP camera was released in 1996 by Axis Communications, but IP cameras did not arrive in South Africa until 2008. [126] To regulate the number of suppliers in 2001, the Private Security Industry Regulation Act was passed requiring all security companies to be registered with the Private Security Industry Regulatory Authority (PSIRA). [127]

5. Network switch - Wikipedia

   en.wikipedia.org/wiki/Network_switch

   A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality. Such switches are commonly known as layer-3 switches or multilayer switches. [2]

6. List of ProCurve products - Wikipedia

   en.wikipedia.org/wiki/List_of_ProCurve_products

   20 or 44 Gb port switch, and 4 x Dual Personality Ports (2 x Gb or SFPs). Also capable of supporting 10GE ports. 20 or 44 10/100 port switches with two models supportingPoE functionality, and 4 x Dual Personality Ports (2 x Gb or SFPs). [4] [5] 20 or 44 Gb port switch with PoE functionality, and 4 x Dual Personality Ports (2 x Gb or SFPs).

7. Avaya ERS 5600 Series - Wikipedia

   en.wikipedia.org/wiki/Avaya_ERS_5600_Series

   Ethernet Routing Switch 5600 Series or (ERS 5600) in computer networking terms are stackable routers and switches designed and manufactured by Avaya.The ERS 5600 Switches can be stacked up to 8 units high to create a 1.152 Tbit/s backplane [1] [2] through the Flexible Advanced Stacking Technology (FAST) stacking technology [3] [4] configuration.