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Cisco 7942G Phones

dalbright1
Beginner
Beginner

So we recently had some phones replaced under warranty with these refurbished 7942G models.

First 4 phones, we plugged in, they loaded up and we programmed them in CUCM and everything was good. The 5th and 6th phone come up with an error "Registration Rejected: Security Error". These are using the same Ethernet cable on the same switch as the first four that had no problems.

I did a reset on them and they come up to the same error. Any chance there is something in the phone causing this that needs cleared?

1 ACCEPTED SOLUTION

Accepted Solutions

Are you using auto registration or manually configuring the phones in CUCM? If auto registration, this error can also be caused by the pool of auto registration DNs being exhausted. Try manually adding the phone in CUCM.

Brandon

View solution in original post

9 REPLIES 9

Brandon Buffin
Advisor
Advisor

Try deleting the ITL file.

  • Choose Settings > Security Configuration.

  • Press**# and erase the ITL file in order to unlock the IP Phone.

Brandon

I tried that just now, got the message on the screen "Erasing CTL and ITL files" and now I am resetting again since the error still appeared. Will updated after the reset.

Try a factory reset:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/7962g_7961g_7961g-ge_7942g_7941g_7941g-ge/9_0/english/admin_guide/P746_BK_IC15BCED_00_adminguide-7941g-7941g-ge-7942-7961g-7961g-ge-7962g/P746_BK_IC15BCED_00_adminguide-7941g-7941g-ge-7942-7961g-7961g-ge-7962g_chapter_01001.html#P746_TK_PFF95B54_00

After deleting the ITL/CTL and the factory reset I am still seeing the same error.