02-07-2019 07:43 AM - edited 03-17-2019 02:05 PM
QUESTION: What tools are available to me to troubleshoot a PoE issue on a CP-8865 phone connected to Cisco WebEx Calling (formerly Spark Calling)? Is there a way to enable SSH on the phones if they are connected to Cisco WebEx Calling? (I cannot seem to find a way to enable it).
CONTEXT: I am running Cisco WebEx Calling with a CP-8865 phone. The CP-8865 standalone operates property using PoE when connected to my existing 3rd Party Switch (UniFi Switch 24 POE-250W), which claims to be 802.3at compliant.
When I connect a CP-BEKEM to the CP-8865, only the CP-8865 will power on (not the CP-BEKEM). I must connect a power brick to the CP-8865 in order to get the CP-BEKEM to power on. The 3rd party switch is reporting that is connected to the phone+KEM via POE+, which I understand the be the same as 802.3at. I also should have plenty of PoE budget to spare. Per my reading of the CP-8865 data sheet, 802.3at should be able to get the CP-8865 with 1 CP-BEKEM to operate.
I would like to find a way to check what level of PoE the CP-8865 believes has been negotiated with the 3rd party switch. I do not seem to be able to SSH into these phones. From my reading, if I were running a local Call Manager, I think I would need to enable SSH, but I cannot find a way to enable SSH on Cisco WebEx Calling (formerly Spark Calling).
Any suggestions would be greatly appreciated, so I don't have to purchase unnecessary power bricks!
02-10-2019 09:01 AM
02-10-2019 01:57 PM
Thanks for the information! It's useful to know that it may very difficult to troubleshoot this issue from the Cisco phone side without involving TAC. I think my next step will be to try a different switch to see if that resolves the issue, before I try to figure out UniFi Switch PoE debugging or bother TAC with this.
RE: PoE+ (802.3at) Negotiation problems between UniFi Switch 24 POE-250W (firmware 4.0.21.9965) and CP-8865 with one (1) CP-BEKEM running Cisco WebEx Calling.
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