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New Member

48-port PoE Switch Compatibility with SPA502/504G

Hello!

I'm not sure if I'm asking this question in the right zone, but still:

We have 24+ Cisco Linksys SPA 502/504G IP-Phones.

Now I'm looking for a 48-port full PoE Switch. I found an insteresting model: Linksys SFE2010P

Will it be enough to give PoE Power to all 48 phones?

I'd be also happy if you advice me another avaliable 48-port PoE switches.

Thank you in advance!

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2 REPLIES
Green

48-port PoE Switch Compatibility with SPA502/504G

Hi,

From the data sheet

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps9967/ps9970/data_sheet_c78-504110.html

Power over Ethernet

• IEEE 802.3af PoE delivered over any of the forty-eight 10/100 ports

• Maximum power of 15.4W to a Fast Ethernet port - 360W total available to all Fast Ethernet ports with regular AC power, 280W total available with a redundant power supply unit


With the default power supply 360W/48 =  7.5W per port

If you dont need POE on a port turn off POE.

This makes that unused POE available to increase the wattage on other ports

HTH

Alex

Please rate useful posts

Regards, Alex. Please rate useful posts.
New Member

48-port PoE Switch Compatibility with SPA502/504G

Hi,

There is no any information about SPA Poe (Watt),but there's link for 3750 Switch

The fixed ports on the Catalyst 3750 Power over Ethernet (PoE) switches  provide PoE support for devices that are compliant with IEEE 802.3af,  and also provide Cisco pre-standard PoE support for Cisco IP Phones and  Cisco Aironet Access Points.

Each of the Catalyst 3750-24PS switch 10/100 ports or the  Catalyst 3750G-24PS switch 10/100/1000 ports can deliver up to 15.4 W of  PoE. On the Catalyst 3750-48PS or 3750G-48PS switches, any 24 of the 48  10/100 or 10/100/1000 ports can deliver 15.4 W of PoE, or any  combination of the ports can deliver an average of 7.7 W of PoE at the  same time, up to a maximum switch power output of 370 W.

http://www.cisco.com/en/US/partner/docs/switches/lan/catalyst3750/hardware/quick/guide/3750GSG3.html

So,if these models work with 7.X W it will be possible to provide power on all 48 ports.

Hope it helps.

Dmitriy.

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