I realize this may be slightly off-topic but I'm wondering if someone here can
lend me a hand.
One of my GXW4008 has gone "unconfigurable" via standard HTTP (refuses
connection) and I can't use the built-in IVR because I had previously disabled
the "keypad update" feature. So I'm stuck with just telnet, the reset button
and RS-232.
Telnet commands are very limited and I can't change SIP configuration or reset
to default values (and see if that helps to bring the HTTP back up). I did try
to upgrade and downgrade the firmware with no change at all.
The reset button reboots the device but doesn't restore default values! (I
tried keeping it pressed for several minutes...)
So my last chance before throwing it away is to administer it via serial port.
The thing is that Grandstream's official manual says that there is "an RS232
serial port for administration" but it doesn't say anything else about it (how
to connect, how to change config, how to reset the device, etc). There's
absolutely nothing regarding RS-232.
If someone has this or a similar device and accessed it via serial port then
I'd greatly appreciate some quick tips.
Thanks,
Vieri
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