What is 802 AF?

An IEEE standard for powering network devices via Ethernet cable. Also known as “Power-over-Ethernet” (PoE), the 802.3af specification provides 48 volts over 4-wire or 8-wire twisted pair.

What is af standard?

IEEE 802.11af, also referred to as White-Fi and Super Wi-Fi, is a wireless computer networking standard in the 802.11 family, that allows wireless local area network (WLAN) operation in TV white space spectrum in the VHF and UHF bands between 54 and 790 MHz. The standard was approved in February 2014.

What is the other name for 802.3 standard?

IEEE 802.3 is otherwise known as the Ethernet standard and defines the physical layer and the media access control (MAC) of the data link layer for wired Ethernet networks, generally as a local area network (LAN) technology.

What is the difference between 802.3 AF and 802.3 at?

The big difference between 802.3af (PoE) and 802.3at (PoE+) is the amount of power delivered over each standard. 802.3af (PoE) can deliver 15.4 watts over Cat5 cables. 802.3at (PoE+) can deliver up to 30 watts over Cat 5 cables with 25.5 watts available to devices.

Whats the difference between PoE+ and PoE ++?

PoE+ switches support devices such as video IP phones, wireless access points with multiple antennas, and complex surveillance cameras. PoE++ switches can support devices that need higher power wattage such as video conferencing system components and building management devices, laptops, televisions, and so on.

What voltage is PoE 802.3 af?

Standard implementation

Property 802.3af (802.3at Type 1) “PoE” 802.3at Type 2 “PoE+”
Maximum power delivered by PSE 15.40 W 30.0 W
Voltage range (at PSE) 44.0–57.0 V 50.0–57.0 V
Voltage range (at PD) 37.0–57.0 V 42.5–57.0 V
Maximum current Imax 350 mA 600 mA

What is the IEEE 802.5 standard related to?

Token ring (IEEE 802.5) is a communication protocol in a local area network (LAN) where all stations are connected in a ring topology and pass one or more tokens for channel acquisition. A token is a special frame of 3 bytes that circulates along the ring of stations.

Which IEEE 802.3 standard is also known as Gigabit Ethernet?

1000BASE-T (also known as IEEE 802.3ab) is a standard for Gigabit Ethernet over copper wiring. Each 1000BASE-T network segment is recommended to be a maximum length of 100 meters (330 feet), and must use Category 5 cable or better (including Cat 5e and Cat 6).

Is 802.3 af 24V or 48V?

48V PoE (Power over Ethernet) is also known as 802.3af and 802.3at (PoE+) is the most common voltage. Some devices from manufacturers like Ubiquiti require 24V PoE.

Is PoE+ the same as 802.3 at?

PoE is the 802.3af standard, and PoE+ is the 802.3at standard. The main difference between the 802.3af (PoE) and 802.3at (PoE+) standards is the maximum amount of power they provide over the Cat5 cabling. The maximum amount of power for the 802.3af (PoE) standard is 15.4 watts.

Are 802.3 AF and 802.3 compatible?

802.3at is backward compliant with 802.3af, which means that 802.3at equipment will be able to send power to 802.3af devices. 802.3at has a higher power limit, which means more wires can carry more current.