CP-7841-K9 failed to register

[Jaiel Charette]

Hi,

I'm having problem registering my two CP-7841-K9 phone with CUCM v10.5. I have 2 CP-7942G, 2 CP-7945G and 1 CP-8831-K9 and they are register without any problem. It's just the 2 CP-7941-K9 that are causing problem.

[Chris Deren]

What do you see under the system messages menu on the phone?

Have you tried factory reset? Press settings, **#, more soft key, Erase.

If so, is the phone pulling proper TFTP address?

Chris

[Jaiel Charette]

I did verify the TFTP address and it's the right one.

[Chris Deren]

Did you perform factory reset? Or deleted old certificates from the phone?

What is the system log on the phone showing?

Chris

[Jaiel Charette]

I tried to factory reset the phone by holding # when booting then 123456789*0# but it doesn't reset it.

If I go under setting, phone information, I can see that Last Upgrade Failed.

Details: SCCP41.9-3-1SR4-1S.loads

[Chris Deren]

How about if you follow my directions for factory reset?

What is the hardware version of the phone? i.e. V13, V14, etc?

Chris

[Jaiel Charette]

cp-7841-k9= v03

[eorteg15]

Hi!

I had the same problem. A workaround it worked for me was  intentionally  changing " Operational VLAN" to a incorrect parameter, save changes, wait a couple of minutes, Apply a reset on Network setting, it will show as not registering and then aply again a Reset on Network settings. It worked for me in 2 phones.Hope  it helps

[Jaiel Charette]

The directions for factory reset seem to be not working. What I did is select Setting, Admin Setting, Reset Setting, ALL but still the same problem.

[Jaiel Charette]

Ohh and I made a mistake, the phone is 7841 not 7941 my bad, I'm sorry...

[Dinsmore Engineer]

Also, check the firmware version the phone is currently running ( settings / status / firmware versions) - we had some 7941s/61s that wouldn't register...

If it's on a lower 8.x version, you may have to do an intermediate update to 8.5.2, then to a 9.x version (which I believe CUCM 10.5 runs standard).

[ev1205]

Hi Jaiel.

My name is Enrique Villasana, and right now I have the same problem

I have a CME 10.5 ( IOS 154-3.M2), and 20 Ip Phones (7821, and 7841 models).

None of these 78XX Ipphones get registration.

I would like to know if you could solve this problem, if so I really appreciate if you can share the solution. I have a Cisco TAC case openned for 2 weeks with no results....

Thanks in advanced

Enrique Villasana

[ev1205]

Hi Jaiel.

My name is Enrique Villasana, and right now I have the same problem

I have a CME 10.5 ( IOS 154-3.M2), and 20 Ip Phones (7821, and 7841 models).

None of these 78XX Ipphones get registration.

I would like to know if you could solve this problem, if so I really appreciate if you can share the solution. I have a Cisco TAC case openned for 2 weeks with no results....

Thanks in advanced

Enrique Villasana