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The original PoE standard, IEEE 802.3af-2003, [1] now known as Type 1, provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) [2] [3] on each port. [4] Only 12.95 W is guaranteed to be available at the powered device as some power dissipates in the cable.
Whereas Category 6 cable has a reduced maximum length of 55 metres (180 ft) when used for 10GBASE-T, Category 6A cable is specified for 500 MHz and has improved alien crosstalk characteristics, allowing 10GBASE-T to be run for the same 100-metre (330 ft) maximum distance as previous Ethernet over twisted pair variants.
While 10GBASE-T had already been standardized since 2006, this standard used a higher signaling frequency that would have substantially limited the maximum distance of Cat5e cable runs. Therefore, there was demand for an intermediate standard that could uplink the 2 Gbit/s and 4 Gbit/s speeds from wireless access points over existing Cat5e cable .
Maximum distance 100 m (328 ft) over twisted pair, up to 100 km over optical fiber Mode of operation optical, differential (balanced), single-ended Maximum bit rate 1 Mbit/s to 800 Gbit/s: Voltage levels ± 2.5 V (over twisted pair) Common connector types 8P8C, LC, SC, ST, MPO
ProCurve 600 Redundant external power supply - supports one of six times Redundant Power for series 2600-PWR (not series 2600 w/o PWR), 2610, 2800, 3400cl, 6400cl and 7000dl as well as two times optional External PoE Power for series 2600-PWR, 2610-PWR or mandatory External PoE Power for series 5300 with xl 24-Port 10/100-TX PoE Module only
The spare pairs may be used for power over Ethernet (PoE), for two plain old telephone service (POTS) lines, or for a second 10BASE-T or 100BASE-TX connection. In practice, great care must be taken to separate these pairs as 10/100-Mbit/s Ethernet equipment electrically terminates the unused pins ("Bob Smith Termination"). [ 19 ]
Max frame size extended to 1522 bytes (to allow "Q-tag"). The Q-tag includes 802.1Q VLAN information and 802.1p priority information. 802.3ad: 2000-03 Link aggregation for parallel links, since moved to IEEE 802.1AX: 802.3-2002 2002-01 (802.3ag) A revision of the base standard incorporating the three prior amendments and errata 802.3ae: 2002-06
Regardless of copper cable type (Cat 5e/6/6A), the maximum distance is 90 m for the permanent link installation, plus an allowance for a combined 10 m of patch cords at the ends. Cat 5e and Cat 6 can both effectively run power over Ethernet (PoE) applications up to 90 m. However, due to greater power dissipation in Cat 5e cable, performance and ...
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