I need some help, because I got some of my cisco 7912 bricked, these phones, had SIP firmware and I was working with no VLAN, so I was doing a test and I entered the VLAN where my CUCM is, all my phones in CUCM VLAN had SCCP firmware. When I entered the VLAN in my SIP phone It started to request TFTP server and then restarted and the phone turned the red and green lights on but in the display there is nothing.
I searched about this problem and I found there is a Brick state when this happend to Cisco phones,
the thing is that I tried with a DHCP server on my computer to give the phone another IP and reload the SIP firmware,
I had no success!! doing that and the phone just stand there with the lights on (red and green)
Checked with wireshark, I see nothing helpfull just see that requests por DHCP and currently IP address 0.0.0.0 and the MAC also.
I'm stuck can't find a solution to this problem
Please if anybody can give me some help with this It'll be great !! thank you in advance to you all.
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