Hi,I took the day trying to upgrade my phone firmware Cisco 7940, but it did not. Somebody help me, or any man known to follow step by step. I am trying flasear ROM with TFTP32 but not you. I want to put a version SIP 8.7, but I do not know how to us...

Bonjour, I get in touch with you to make an inquiry. I have a telephone Cisco 7940, I want to use through a single Ethernet cable and power PoE. I connect the phone to a switch PoE but I do not know how is the braided cable Cat.5 before you can use...