Hi,
If cisco does not work for you, try the following methods:
1. Try password "Cisco" (with capital C).
OR
2. If this password still doesn't resolve the problem, and if you still can't access
configuration menu, please try to edit phone's cnf file by adding the following things in
it:
<commonProfile>
<phonePassword>cisco</phonePassword>
</commonProfile>
Regards,
Hitesh