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cisco 7960G

Hi,

i have a problem about this IP phone

I'm trying to power them up from a 3COM switch ref. 4500 PWR but it doesn't work

what i have to verify and what might be the problem thanks in advance

3 REPLIES
Hall of Fame Super Gold

Re: cisco 7960G

Hi,

the 7960 supports only pre-standard cisco PoE, the switch you are using does not supports that.

Hope this helps, please rate post if it does!

Hall of Fame Super Red

Re: cisco 7960G

Hi Saad,

The problem here is that the 7940 and other older Cisco phones use a pre-standard power and not 802.3af PoE which the 3com uses.

Q. What IP phone models support the Cisco pre-standard method of powered device detection?

A. These Cisco IP phones can accept Cisco pre-standard PoE from a card integrated with a Cisco Catalyst switch or a Catalyst in-line power patch panel:

7985G

7960G

7940G

7910G

7910G + SW

7912G

7905G

7902G

These phones can draw local power from a power cube (CP-PWR-CUBE-2=) in addition to a country or regionally specific power cord (CP-PWR-CORD-xx=).

Q. What IP phone models support the IEEE standard method of powered device detection?

A. These Cisco IP phones support IEEE 802.3af PoE:

7961G-GE

7971G-GE

7941G

7931G

7911G

7941G-GE

Note: These Cisco IP phones support both the Cisco pre-standard PoE and IEEE 802.3af PoE:

7970G

7961G

7906G

From this new doc;

Power over Ethernet (PoE) Power Requirements FAQ

http://www.cisco.com/en/US/products/hw/phones/ps379/products_qanda_item09186a00808996f3.shtml

You probably need a third party product like;

PowerDsine 6000 Power over Ethernet Midspan Family

http://www.powerdsine.com/Products/Midspan/PD_6000.asp

Good chart that shows 7960 etc.

http://www.powerdsine.com/Partners/Cisco/solutions.asp

Hope this helps!

Rob

EDIT: Paolo, please remember my limitations when it comes to typing :) Huff

Hall of Fame Super Gold

Re: cisco 7960G

Rob, is not a fair comparison. I write a lot less than you :)

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