[cisco-voip] 8851 - power draw

[Terry Oakley]

On a quick test our 8851 draws 15.4 on boot and settles back to 9.8 at rest.  

 

Terry

 

From: cisco-voip <cisco-voip-bounces at puck.nether.net> On Behalf Of Lelio Fulgenzi
Sent: Friday, February 7, 2020 7:47 AM
To: Biffle, Gerrad <Gerrad.Biffle at greensboro-nc.gov>
Cc: Cisco-VOIP <cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] 8851 - power draw

 


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Hey Thanks! This does help.

 

Do you know if the ones drawing more than 9.4 have a KEM? 

 

From: Biffle, Gerrad <Gerrad.Biffle at greensboro-nc.gov <mailto:Gerrad.Biffle at greensboro-nc.gov> > 
Sent: Friday, February 7, 2020 9:44 AM
To: Lelio Fulgenzi <lelio at uoguelph.ca <mailto:lelio at uoguelph.ca> >
Cc: Cisco-VOIP <cisco-voip at puck.nether.net <mailto:cisco-voip at puck.nether.net> >
Subject: Re: [cisco-voip] 8851 - power draw

 

Don’t know if you still need it or not.  Here is a quick grab from one of our switches: 

 

Interface Admin  Oper            Power(Watts)     Device              Class

                            From PS    To Device

--------- ------ ---------- ---------- ---------- ------------------- -----

 

Gi2/17    auto   on         14.5       13.8       IP Phone 8851       3

Gi2/18    auto   on         9.4        8.9        IP Phone 8851       4

Gi2/19    auto   on         12.9       12.3       IP Phone 8851       4

Gi2/20    auto   on         9.4        8.9        IP Phone 8851       4

Gi2/21    auto   off        0.0        0.0        n/a                 n/a

Gi2/22    auto   off        0.0        0.0        n/a                 n/a

Gi2/23    auto   on         9.4        8.9        IP Phone 8851       4

Gi2/24    auto   on         10.3       9.8        IP Phone 8851       3

Gi2/25    auto   on         10.3       9.8        IP Phone 8851       3

Gi2/26    auto   on         9.4        8.9        IP Phone 8851       4

Gi2/27    auto   on         6.6        6.3        IP Phone 7962       2

Gi2/28    auto   on         9.4        8.9        IP Phone 8851       4

Gi2/29    auto   on         10.3       9.8        IP Phone 8851       3

 

 

On Feb 6, 2020, at 6:11 PM, Lelio Fulgenzi <lelio at uoguelph.ca <mailto:lelio at uoguelph.ca> > wrote:

 

 

Does anyone have a bunch of 8851s deployed? Can I trouble you for a “show inline power” output? I’m looking for what normal operating power draw is for this model. No side cars, no USB, sort of thing.

 

I’ve got an 8865 showing 12.9W, and I’m hoping it’s less. We’re looking at selecting 8841 or 8851 and power draw is a concern. Startup too, but apparently, startup will cycle through.

 

Lelio

 

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