I have been trying to change the logo on our 7960 phones and am having the same kind of problem. I have not been able to get the image to show up on the phone using the GIF2CIP utility. The only way I can get the image to show up on the phone is a .B...

I use the SIPMACADDRESS.cnf file for single phones. The SIPDEFAULT.cnf file for changes to every phone.