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7975 IP phone keeps rebooting

We just brought a new 7975 IP phone and the phone keeps rebooting. checked the firmare version and the image on callmanager. not quite sure why this is happenning. BTW, the CCM version is 4.2Sr3a

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Accepted Solutions

can u answer my second question. Are you able to add a device as 7975 ? or have u added this phone as 7970 ?

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

View solution in original post

6 Replies 6

thisisshanky
Level 11
Level 11

What are the sequence of display msgs u get on the phone ?

Are u able to add the phone in Callmanager as a 7975 phone?

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

on the phone downloading image screen , it comes up with "auth fail" and before it goes through the reboot phase it comes up with "Registration rejected : error mismatch"

can u answer my second question. Are you able to add a device as 7975 ? or have u added this phone as 7970 ?

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

I've added the device as a 7975

Have you tried resetting the phone to factory defaults..

what is the default firmware on the phone (you can go to settings-> option 5-> option 3.

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

looks like it worked the second time. Don't quite know why....but it worked!!! thanks

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