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CISCO SWITCHES FOR SMALL and MEDIUM BUSINESS

Introducing the next generation of Cisco Small and Medium Business Switches. Cisco is refreshing its SMB Switch portfolio. Click here  to learn more.


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arieldembling
Beginner

Are 300 Series switches compatible with pre-standard PoE detection in old Cisco phones?

Are 300 Series switches compatible with pre-standard PoE detection in old Cisco phones? They don't seem to be (a 7902G won't power on when connected to an SF302-08MP with firmware version 1.1). Is any special configuration needed on the switch to enable this detection?

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Ivor Diedricks
Cisco Employee

Please note that the 200 and 300 Series switches now support Cisco Legacy POE as of September 2011, allowing it to deliver power to 7960, 7940, and other pre-standard phones and APs. Details provided at the following link:

https://supportforums.cisco.com/docs/DOC-18337

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2 REPLIES 2
David Carr
Frequent Contributor

Arieldembling,

The 300 series switches are 802.3af standard for poe.  The older Cisco phones are powered by inline power which is indeed a different standard and wont work with our switches poe standard.

Ivor Diedricks
Cisco Employee

Please note that the 200 and 300 Series switches now support Cisco Legacy POE as of September 2011, allowing it to deliver power to 7960, 7940, and other pre-standard phones and APs. Details provided at the following link:

https://supportforums.cisco.com/docs/DOC-18337

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