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lapavoni
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VoIP - PoE Switches vs. phone adapters

We're in the early stage of looking to replace our aging phone system with VoIP.

Our 5 switches are Cisco 2960G ... Not PoE.

Aside from no 9-1-1 in a power failure, is there any disadvantage to using power adapters on each VoIP desk phone vs. replacing two or more of our switches with expensive new ones ?  We have maybe 75 phones.  I also read that a Cisco PoE switch may have 48 ports, but only 24 of them can provide PoE power. Is this generally true or just for certain switches ?

Thanks.
Stephen
Voice Over IPNetworkingSwitches / HubsIP TelephonyTelecommunications

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lapavoni

8/22/2022 - Mon
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buckethead34

I would look at replacing the switch with a PoE switch. Power adapters are pretty expensive and it doesn't take a too many to make the PoE switch the more cost effective solution
lapavoni

ASKER
Good advice and good points. Thank you both.  Studying Cisco 2960 PoE switches, I learned that the 370 watt powers 24 of the 48 ports. The 740 watt powers them all.  It is a significant investment at $3k to $4k each, but probably worth it in the long run.
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