Is it possible for POE switch to provide power to ports on NON-POE switch?

We have an HP 2920-48 port POE switch. We also have 2x HP 2920-48 port NON-POE switches. I was surprised to find today that our new VOIP phones are actually get power when plugged into the NON-POE switch?! Is this possible?? If so, are there possible issues I should consider when configured in this manner. I know we are having issues with the phones losing calls before they can be answered...wondering if related.
Jason ShawAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

That's very odd. The answer to your question should very much be no, unless you have an injector of some sort between the non-POE switch and the phone. Are you sure there isn't some sort of other POE switch in the middle?
Jason ShawAuthor Commented:
None. Phone->CAT5> adapter or anything in between
Jason ShawAuthor Commented:
HP 2920-48G-POE+ Switch (J9729A) and HP 2920-48G Switch (J9728A) - phone is connected to the J9728A
Your Guide to Achieving IT Business Success

The IT Service Excellence Tool Kit has best practices to keep your clients happy and business booming. Inside, you’ll find everything you need to increase client satisfaction and retention, become more competitive, and increase your overall success.

Then I would be concerned.
Jason ShawAuthor Commented:
I just found something very odd. According to this document, all of that line of switches are POE. However, the only ones that highlight that are the POE+ switches. And that would make perfect sense.

That's pretty hilarious considering that even HP's own site doesn't acknowledge the ports are POE, yet does mention the POE+ ports on the appropriate models.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Jason ShawAuthor Commented:
Wow, I checked online and read they were NOT poe. Strange...but explains why we are getting power
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Networking Hardware-Other

From novice to tech pro — start learning today.