03-22-2012 12:47 AM - edited 03-16-2019 10:15 AM
Dear all,
I have a CUCM cluster that are operating normally for the entire IP phone at this time. I bought some new IP phones for our system last month, including IP phone 7911 and 7942. After registing those IP phones with CUCM system, they get their Directory Numbers as usual. But after a few minutes, they automatically re-register with CUCM. This process repeats each 5 minutes.
The old IP phones operate normally, it only happens to new IP phones, and I can’t understand the reason why.
I have loaded IP phone’s firmware, checked the port-security on the switch, replaced the cable, but all solutions cannot be resolved ?
Please help me resolve this problem, thanks.
Trung.
03-22-2012 01:10 AM
Trung,
Please post your CUCM version & firmware version in 7911 & 7942 ( i mean, what is the firmware version shown on phone & what is there in Device Defaults page for those 2 models )
GP.
03-22-2012 01:34 AM
HI Gajanan,
My CUCM version is 7.1.3b.
Firmware of 7911 is: SCCP11.9-0-2SR1S
Firmware of 7942 is: SCCP42.9-0-2SR1S
I has take factory reset and load firmware again but not resolved
Do you have any ideas ?
Thanks,
Trung.
03-22-2012 01:38 AM
Firmware of 7911 is: SCCP11.9-0-2SR1S
Firmware of 7942 is: SCCP42.9-0-2SR1S
Above are the firmware versions as seen on phone or as on CUCM or both ?
GP.
03-22-2012 01:41 AM
Firmware versions same on both CUCM and IP Phone. But I think firmware is not a reason of this problem. Because older IP Phone with this firmware is working normal.
Thanks,
Trung.
03-22-2012 01:57 AM
Hi,
How many license are left in the CUCM for IP phone.
License Unit Report will give you the details.
Regards
Ronak patel
03-22-2012 01:57 AM
Yes I agree, I was checking something else. If you had added these new phones to the same DP of older phones, that means they must have got the Primary/Secondary CUCM details properly.
Now the only thing I doubt is the switch port with flickering POE output. Do you see any issue there ? Swapping the non-working phone with other working phone should confirm this.
BTW, your firmware version is still older as compared to the most latest one released here
GP.
03-22-2012 02:22 AM
Hi,
My CUCM license is more leftovers, license remainning about 2000 unit. That is license is not reason of this problem.
i has moved new IP Phone to switch port of normal working IP Phone, the error not resolve, this process re-register is repeated.
I think, there is problem of keepalive between CUCM and IP Phone. Did Firewall inspection SCCP take effect to keepalive package ?
Any Ideals,
Thanks,
Trung.
03-22-2012 02:29 AM
Trung,
Why would firewall affect only few phones of same site ( are they at diff site ) ? If it does, it will affect all phones on that site.
I know that other phones with same firmware are working fine but I guess firmware upgrade would make the difference for any keepalive issues.
GP.
03-22-2012 02:41 AM
Hello Gajanan Pande,
You are right, the errors appear only for new IP phone, old IP Phone not effect. All IP Phone in the same site. I will upgrade firmware for IP Phone and have a feedback hixx,
hope any ideals for this problem
thanks,
Trung.
03-24-2012 03:19 AM
Dear all,
Today I has upgraded firmware for IP Phone to 11.0 version, so this problem is not resolve.
Anyone help me to resolve that ?
Thanks,
Trung.
03-25-2012 03:01 PM
You have firewall between CM and phones? If yes, that's the most likely cause.
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