I'm in the process of debugging an odd behavior on a Dell Powerconnect 5524P PoE switch. This switch connects a remote office with 3 people in it to our main office. I've been going back and forth with Dell, and one of the things that has come up is the fact that two of the three IP 335s I have connected to the switch identify as Class 0 and the other properly identifies as Class 2. They tell me that this "problem" can only come from the phone not properly identifying what class device it is.
This may or may not be related to the original PoE problem, but they won't move past it until I can explain why two of the three devices incorrectly identify, or fail to identify rather, their power class, and correct the problem.
Does anyone know what could be causing this.
Just a few details, one of the two phones in question is connected via a Cat6 cable about 10 feet long. The other problem phone is connected via a Cat5 cable about 4 feet long. The phone that is reporting correctly is connected via a Cat6 cable about 20 feet long, and it also has a computer daisy chained off of it.
Any help would be greatly appreciated. I don't think that the phones are the problem, they are working fine. But Dell won't move further with troublshooting until I can rule this out as the cause. Typical corporate blame game stuff....
welcome to the Polycom Community.
The Feature Descriptions & Technical Notifications => here <= contains the Power Consumption on Polycom® Phones document which holds detailed information => here <=
Ensure that all the phones are running the same software and according to the above a SPIP335 is a PoE class 2.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
Thanks for the links. However, I had already read over them and I am aware of what the power requirements for the phones actually are.
I guess specifically, what could cause the phones to either incorrectly identify, or not identify at all, their PoE class. Of the 3 phones I'm concerned with right now, one is correctly identifying as Class 2. The other 2 are identifying as Class 0, which, according to Dell, means that they are not identifying a power class at all.
something like this would require troubleshooting via your Polycom reseller and/or Polycom support directly as we would require certain logs etc..
I am not aware of any current PoE class issues so please work with your Polycom reseller and/or Polycom support directly.
Maybe HP can get you some logs of the LLDP negotiation.