how can i reset 7940 & 7960's phones

[kcox]

My company purchased some 7940 and 7960 phones. The phones have user passwords assigned to them that i do not have and want to reset them back to the factory standard. Is there any way that this can be done without the passwords?

Thanks in advance

[mchandak]

resetting the phone to the factory defaults would depend on the firmware the pho