Thanks for your posts, basiclly what the user wants is to use his phone normally while he's at his desk, but to be able to block it while lets say he goes out to lunch, so no other user can use his phone while he's out, and be able to return to normal operation when he returns, i've seen this feature on siemes systems i think ( the user enteres a function code and password and disables the phone ), not sure is there something like this on CICS.
Thanks again.