[asterisk-users] aastra pt 480e phone

[michael capelle]

hello
i hope i am posting to the right list, i am a totally blind user, and i want 
to reprogram my aastra pt 480e phone, my friend used the web configurator, 
but i think he programmed thw wrong codes, a few questions, is it possible 
to damage the phone by programming it wrong? also, how does one reset it 
literally to factory defaults? as unplugging it and replugging it back into 
the wall didn't work.
regards
a happy aastra user.