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PoE standard differences
- Thread starter gknight1
- Start date
The Avaya power supply is 802.3af compliant, which is a standard for POE devices (the standard dictates how much power to output, on what pairs, etc.)
Any network device which is 802.3af compliant will work with an 802.3af compliant POE Source.
Any network device which is 802.3af compliant will work with an 802.3af compliant POE Source.
- Thread starter
- #3
robboardman
IS-IT--Management
Proper 802.3af actually negotiates the power requirement needed where as the avaya power brick sends out 48V at a certain ampage what ever maybe this is why?
Robb
Robb
The brick from Avaya is different then other POE bricks
For ipdect you need a different one then for ipphones
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Women and cats can do as they please and men and dogs should relax and get used to the idea!
For ipdect you need a different one then for ipphones
ACA - Implement IP Office
ACS - Implement IP Office
ACA - Implement IP Telephony
ACA - Voice Services Management
______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!
The brick from Avaya isn't even a PoE brick, it is just a brick.
With PoE, when first connected the power supply and powered device check for a particular resistance between wire pairs before drawing power. Effectively a handshake routine to check that the other end is a PoE compliant source/device. That's the bit the camera has spotted is missing despite cable connection from the brick.
After that more sophisticated PoE source do power testing to see if the device is Class X, Y or Z. Less sophisticated device just provide whatever power is drawn.
The fact that Avaya haven't simply rebadged someone elses PoE injector (you can get them for $20) to replace the brick implies either they have a good number of products that still need the brick because they can't use PoE or simply they expected everyone to be on PoE LANs by now.
With PoE, when first connected the power supply and powered device check for a particular resistance between wire pairs before drawing power. Effectively a handshake routine to check that the other end is a PoE compliant source/device. That's the bit the camera has spotted is missing despite cable connection from the brick.
After that more sophisticated PoE source do power testing to see if the device is Class X, Y or Z. Less sophisticated device just provide whatever power is drawn.
The fact that Avaya haven't simply rebadged someone elses PoE injector (you can get them for $20) to replace the brick implies either they have a good number of products that still need the brick because they can't use PoE or simply they expected everyone to be on PoE LANs by now.
- Status