Download Power over LAN

Additional tech info and RMA/support
Kettil Sjöholm
Index
 Glossary
 IEEE802.3af standard
 RMA/support procedure
Glossary
 IEEE802.3af – IEEE standard for PoL
 PD – Powered Device. A terminal Device, which
has been designed to recieve power and data in a
single cat5 cable
 Conventional Ethernet Switch – 10/100 switch
without In-line power
 Mid span device – Takes data from Conventional
Ethernet Switch and insert power into the spare
pairs of a single cat5 cable. Installed between the
Ethernet switch and the PD
Glossary cont.
 End span device – Ethernet switches
incorporating In-line power
 PSE – Powered Sourcing Equipment
(same as End Span Device)
 Physical Infrastucture – The CAT5
cabling, patch panel, connectors, etc
IEEE802.3af standard
 IEEE802.3af is IEEE802.3 Subcommitee
 PowerDsine is a founding member of IEE802.3af
 Technical verison 4.0 of the standard is complete
 Purpose is to provide intelligent, reliable and safe
power over physical infrastructure for legacy and
new PD’s
 Standard estimated to be closed Q1 of 2003
IEEE802.3af standard cont.
 Parts of Main Decisions Summary
 PSE output: 350mA continuous, 44Vdc to 57Vdc
 PSE continuous Average Output Power: 15.4W
minimum
 PD maximum power allowed to be used is
12.95W
 Mid-span shall supply power on spare pairs (4,5
and 7,8)
 End-span shall supply power on either data pairs
(1,2 & 3,6) or spare pairs (4,5 & 7,8).
 Power cannot be applied to any PD unless the
proper signature (the resistor concept) is
detected. (This is how non PD’s are protected)
RMA/support procedure
 RMA procedure is the same as with
Axis products
 Always contact Kettil regarding
support questions and escalations
 Information about the installation and use of
the unit
 Information about the failure and/or reason
for not working