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I have a cisco c40 video codec that is not accepting the admin credentials that I established for it over SSH/HTTPS. I suspect that the config file is corrupt as there are other erroneous behaviors in the settings regarding DHCP and gatekeeper settings.
I have seen several methods for resolving this via a serial connection. Each involves connecting via 38400, 8, N, 1 and either breaking the boot sequence (b or c during boot) and removing the config file OR logging in within 1 minute of boot with the user 'pwrec' to reset the root login.
The problem I am having - using both hyperterminal and Putty - is that neither accepts any input from terminal at any point during the connection. So I can't break the boot sequence OR enter login information.
Am I missing something? Is there a way to force commands using a different sequence of key presses?
EDIT: I have also read the support documentation for the unit and I am using a straight through serial cable for the connection from BOTH a USB-Serial adapter and a native serial port.
Tee_Yum
Posted 2015-04-22T11:54:48.230
Reputation: 1
By accept do you mean it rejects the input or simply doesn't register you have provided ANY input, the later sounds like, your not connecting to anything. – Ramhound – 2015-04-22T11:59:08.350
It does not register input. I am connected - as I can clearly read and observe the boot sequence and login prompts that appear in the terminal window - as well as the commands to break the boot sequence. – Tee_Yum – 2015-04-22T12:21:37.083
So you are being sent data. You just can't send data yourself. Is that correct? – Ramhound – 2015-04-22T13:02:00.610
Affirmative - I'm only getting output. – Tee_Yum – 2015-04-22T13:20:50.227