I have just purchased some new Cisco 7940 phones and they will not register with Call Manager 3.1. I go and add the device, the call manager will assigin it an IP address, but when you boot the phone it gets to a point “updating software” and just stays there. When I look at the device in the call all looks well, it just says device not registered. Can anyone help.
We have, I suppose, about one hundred IP-Phones installed at our customers, but I never saw such problem.
So, the phone writes “Configuring IP”, “Configuring CM List” and so on. Then it goes to TFTP server and starts to download appropriate s/w image and writes it to flash. As I understand, message “updating software” appears at this point.
1. Press Setting button and select Status – Status Messages. Is there something interesting ?
2. You may try to change default s/w image from CallManager. Maybe it is corrupted..?