T20P connected to Cisco catalyst 2960

[jcmluquez]

Hi all! I've connected a T20P telephone to a catalyst 2960 switch with PoE support but the telephone do not start. The telephone specs says that it support PoE. The switch port is configured with a max power supply of 15.4W.
Is there a specific setting that I'm missing?
Many thanks in advance!

[Yealink Support]

Hi Jemluquez,
Sorry we didn't try with a Catalyst 2960 here before.
Our PoE is require 48V power.
Does every T20P can't start with this switch? Or only this phone can't start?

[jcmluquez]

Hi! Thanks for the quick response.
None of the 5 T20P can start connected to the switch. By the way, other Cisco's phone can start with PoE of the switch.
I will try with a phone firmware upgrade if there any available.
I'll keep you posted.
Regards,

[curse821]

Hi Yealink,

I've got a question, we've bought a Yealink IP Phone SIP-T19P and a IP Phone SIP-T20P. The T20P PoE are working in our Cisco c2960 48pst-l switch, but when trying for the T19P its PoE doesn't work. Is there any configuration we need to do in the IP Phone SIP-T19P?

Thanks.

[PatKra]

Hi,

Is it an "old" catalyst 2960?
I'm not very much into cisco switches but I know that cisco had its own pre-IEEE 802.3af standard, before the IEEE 802.3af POE standard.

more info here:
http://www.voip-info.org/wiki/view/Cisco+POE

Best Regards,
Patrick