Thanks to everyone who is helping. As u said we are a reseller of NEC. And we take assistance and support from NEC UK. i can give address: cube.necinfrontia.co.uk and this is not free, we pay some money for this support, and this is all, we ask them, they reply if they are able to reply and are not so busy. We have a username and password. this username and password are only valid for that site. For the other sites of NEC for example: www.necinfrontia.com, www.necinfrontia.co.uk do not support this username password.
i hope to find useful documents, but i dont know how worthy to pay for. If so, I'll request for an account to my boss.
Thanks in advance.