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New Member

UPS backup measuring for an IPT implementation

A client of mine wants an accurate idea of how long thier voip network will stay up on backup power. I am to recommend UPS models based on these figures for thier enviroinment of 3560s and 7960/40s. Does anyone know of a good tool or web resource for these figures?

Appreciated.

1 ACCEPTED SOLUTION

Accepted Solutions

Re: UPS backup measuring for an IPT implementation

On the spec sheets for the 3560, you just need to see what the max draw is on the switch. any switch POE or not will only draw a certain amount of amps and watts from the outlet. If you figure "worst case scenario" of the draw, then use this number for the APC model you select.

for instance: the Spec sheet for the 3560 off Cisco Site:

? 45W (Cisco Catalyst 3560-24TS)

? 485W (Cisco Catalyst 3560-24PS)

? Dissipated power: 115W, 393 BTUs per hour

? PoE: 370W

? 65W (Cisco Catalyst 3560-48TS)

? 530W (Cisco Catalyst 3560-48PS)

? Dissipated power: 160W, 546 BTUs per hour

? PoE: 370W

? 100W (Cisco Catalyst 3560G-24TS)

? 540W (Cisco Catalyst 3560G-24PS)

? Dissipated power: 170W, 534 BTUs per hour

? PoE: 370W

? 160W (Cisco Catalyst 3560G-48TS)

? 590W (Cisco Catalyst 3560G-48PS)

? Dissipated power: 220W, 690 BTUs per hour

? PoE: 370W

370 Watts is the number you need figure in to the APC unit.... how long will 370 Watts run on APC model XXX

And if you less IP phones, it will run longer.... etc

5 REPLIES

Re: UPS backup measuring for an IPT implementation

On the spec sheets for the 3560, you just need to see what the max draw is on the switch. any switch POE or not will only draw a certain amount of amps and watts from the outlet. If you figure "worst case scenario" of the draw, then use this number for the APC model you select.

for instance: the Spec sheet for the 3560 off Cisco Site:

? 45W (Cisco Catalyst 3560-24TS)

? 485W (Cisco Catalyst 3560-24PS)

? Dissipated power: 115W, 393 BTUs per hour

? PoE: 370W

? 65W (Cisco Catalyst 3560-48TS)

? 530W (Cisco Catalyst 3560-48PS)

? Dissipated power: 160W, 546 BTUs per hour

? PoE: 370W

? 100W (Cisco Catalyst 3560G-24TS)

? 540W (Cisco Catalyst 3560G-24PS)

? Dissipated power: 170W, 534 BTUs per hour

? PoE: 370W

? 160W (Cisco Catalyst 3560G-48TS)

? 590W (Cisco Catalyst 3560G-48PS)

? Dissipated power: 220W, 690 BTUs per hour

? PoE: 370W

370 Watts is the number you need figure in to the APC unit.... how long will 370 Watts run on APC model XXX

And if you less IP phones, it will run longer.... etc

New Member

Re: UPS backup measuring for an IPT implementation

Who said anything about APC? ;-) If you've got the money, go with a Powerware unit instead. It's a superior product but it is a little more expensive.

Re: UPS backup measuring for an IPT implementation

Too many accronyms.... APC, UPS, CCM, CMM, IPCC, IPC, ACD, CTI, VMO, etc etc etc..

So yes.... there are other vendors.... :) Just use your common sense when selecting a unit and understand what the switch actually draws from the 110 outlet.

Re: UPS backup measuring for an IPT implementation

Go to APC website. There tool is not up to date, but you can put together all the routers switches, servers phones etc and it will tell you the wattage requirement. Once you get this, you can go with which ever UPS vendor of your choice.

New Member

Re: UPS backup measuring for an IPT implementation

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