factory reset an aastra intelligate PBX? 1

[pds8475]

Hi
The company I work for has got a number of aastra intelligate 2045,2065 and a300 systems for test/ repair. To test them I need to be able to access them but of course none of the systems have the default username and password. I have looked through the manuals online but none mention factory resetting the systems.
Could anyone tell me how to factory reset these systems?

Thanks in advance

 

[zoo1]

See if attached document can help...
BR