I have the following situation:
The problem that occurs randomly is that either when the firmware was SCCP firmware Release 9.2(1), or it was upgraded to SCCP firmware Release 9.2(3), approximately 5 Cisco IP Phones, the screen goes blank, the phone being still operational (but difficult to operate in such circumstances), and the problem persists until it is disconnected from PoE, and re-connected.
Please if possible, any solution to this problem is much appreciated.
Thank you in advance.
In addition to what I already mentioned, I would like to detail a few aspects, in order to be more specific with this behavior:
- From the total number of Cisco IP phones which is less than 1000, this behavior happened randomly, within 1 month and 3 weeks
- Actually, it was a total number of 8 Cisco IP phones whose display went off, 4 being located in Headquarters, and from the other 4, 3 were in the same Branch, and 1 in another Branch
- Also, 7 IP phones are connected in non-Cisco switches with PoE, and 1 IP Phone was power supplied from AC adapter
- initially, all existing IP phones had firmware Release 9.2(1) for 7945G and 7965G, and the mentioned behavior happened with 4 IP phones
- then, for all IP phones, it were upgraded to firmware Release 9.2(3) for 7945G and 7965G, but problem re-appeared with other 4 IP phones
The only solution that solved the issue for each IP phone was to disconnect the power from the IP phones.
I hope that you might help me on how to get solving this problem, and I am looking forward for any useful idea or solution.
Many thanks in advance.
Were you able to get this problem resolved?
I am experiencing this same problem.
Thanks for any help that can be provided.
No I was not able to fix the problem on 9 Cisco IP Phones.
Please let me know if you get a fix.
I am experiencing the same type issues, thus far I have 6 model 7965G and 7945 Cisco IP Phones totally not responded after inital boot up, the buttons flash to indicate power and then blank screen.
Anyone out knows a fix and or process ?????????
Please try updating one phone to the latest firmware and let me know if this issue is fixed, in the mean while i will recreate the issue in my lab.
you can download the load from the link below
Thank you all for your replies to this thread.
I was still not able to solve the problem.
It's true that since several months the problem didn't appeared again.
I can provide further details, in case it helps.
Thank you in advance for any helpful solution that can solve this issue.
I would suggest you to enable SSH on the IP Phones that have experienced this problem run the following debugs:
jvm logging level debug
debug jvm all
In adition, if a sniffer trace can be collected, would be great.
If you have a video or something like that showing up the problem, please provide it.
You should probably make your own post for your problem including CUCM version/firmware version/phone model/switch model/IOS version/console logs from the phone/log from the switch/whether or not you're running Energywise.
Problem got resolved by upgrading the IP Phone Firmware to the latest "SCCP45.9-3-1SR4-1S"
Download File Name: cmterm-7945_7965-sccp.9-3-1SR4-1.cop.sgn
I am facing similar issue with our newly migrated phone system. We are running on the SIP45.9-3-1SR4-1s phone load. CUCM version 10.
Issue is the phone screen goes blank for few seconds and then comes back up. We have noticed that sometime the phone screen goes on blank state for around 25-30 sec and then comes back automatically and during that time there were no dial-tone.
I checked the bug id that's mentioned in this thread but not quite the same symptoms.
Any idea or suggestion?