How much PoE Power does a 8961 Actually use ?

[Fraser Reid]

Hi All

I would like to know the actual power requirement for a 8961 when used with a 3750x Switch

I have seen only 15.4 W in every document I have found but that just goes by the fact that the phones are class 3.

A 7962 is class 2 but uses only 6.2W instead of the 7.5 that could be possible.

Can someone answer this that actually has this model in use ?

Cheers

Fraser

[phooghen · Accepted solution]

Cisco Ip phone 8961

802.3AF Classification  / Maximum Watts ：Class 4（15.40W）

CDP (W) for Budgeting PoE　：9.6

Actual Power when Idle (W)* ：6.1

Power Save mode*：5.1

Power Save Plus mode： 1 Watt

Pierre.

[Fraser Reid]

Hello Pierre.

Is there a PDF where this information is contained ? Also for other Telephones (the 9000 Series) ?

Fraser

[Volodymyr Morskyy]

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/9971_9951_8961/7_1_3/english/admin/guide/9971apxd.html

Power

•100-240 VAC, 50-60 Hz, 0.5 A—when using the AC adapter •48 VDC, 0.2 A—when using the in-line power over the network cable

As far as I remember to get Watts you need:  48VDC * 0.2A = 9.6 W

HTH, Volodymyr

[Fraser Reid]

check this out too guys.....

from CDP on a 3750X Switch for a 8961 IP Phone......

Device ID: SEPE840400CF086

Entry address(es):

  IP address: 10.146.160.26

Platform: Cisco IP Phone 8961,  Capabilities: Host Phone Two-port Mac Relay

Interface: GigabitEthernet2/0/38,  Port ID (outgoing port): Port 1

Holdtime : 141 sec

Second Port Status: Down

Version :

sip8961.9-1-1SR1

advertisement version: 2

Duplex: full

Power drawn: 8.973 Watts

Power request id: 34545, Power management id: 3

Power request levels are:8973 0 0 0 0

Management address(es):

and now on the same switch.......

Device ID: SEPE84040A2549D

Entry address(es):

  IP address: 10.146.161.196

Platform: Cisco IP Phone 8961,  Capabilities: Host Phone Two-port Mac Relay

Interface: GigabitEthernet1/0/26,  Port ID (outgoing port): Port 1

Holdtime : 135 sec

Second Port Status: Up

Version :

sip8961.9-2-1

advertisement version: 2

Duplex: full

Power drawn: 9.503 Watts

Power request id: 40277, Power management id: 3

Power request levels are:9503 0 0 0 0

Management address(es):

strange......

ios all identical.....