09-21-2021 05:47 AM
Installed New 8841 phones, they intermittently drops calls, At that time, display shows Detecting Network then phone is usable again. This takes about 5 seconds
CUCM 11.5,
VoIP 8841 HW Version 42 with firmware 12.8.1 (Upgraded to Version 14.0.1, Same issue)
Older VoIP 8841 HW version 31 with firmware 12.0.1.11 works fine, no issues (Also upgraded to version 14.0.1, still no issues)
It appears that 8841 phones that came with firmware 12.8.1 are the only ones having this issue. When the phone drops the call, the display shows detecting Network. The associated router provides DHCP for both versions,
When 12.8.1 drops, the Phone appears to be requesting a new IP at that time, even when Lease is set to infinite, it doesn't matter.
09-21-2021 05:56 AM
If the phone is showing Detecting Network, I feel like phone is loosing network connectivity. How many phones are effected ?
Did you replacing the network cable ? DiD you check the connectivity ?
09-21-2021 08:36 AM
09-21-2021 09:14 PM
Do you have a valid smartnet? , i would suggest open a TAC case.
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