Support for a Friend in Rehabilitation

I'm not hearing from my good friend who was just court ordered into a free California drug rehab facility for a year. I'm trying to discover what full time residents are and aren't allowed to do. He's angry with me but not enough to stop all communication....but I really don't know this for certain.

I'm having difficulty getting any info out of the main office running the facility/home he's staying at as far as his freedoms are concerned, if he's allowed to go somewhere within reason. If there's a curfew it says to me that he is. How are these freedoms monitored? Can he visit other people who are in his program? Can he use a public telephone while he's away from the house?

What are typical rules/regulations at state run houses for full time residents? I basically understand his daily curriculum but on Sundays I believe he has a free day. What's he allowed to do on those days? Does he have access to a phone or computer? I don't want to feel angry he's ignoring me only to discover he has no way to contact me other than writing me letters. On the other hand I don't want him eventually blaming his silence on "rules" when the truth was he just didn't want to talk to me.

I cannot discover these answers anywhere. I hate to keep calling their main office and asking more questions when they're not very forthcoming to begin with. I miss my friend very much. Any information you can provide will be greatly appreciated. Thank you.