Oh, if he turns off the ringer; my T sometimes had to do that as she'd forget to do it before the session. If they're using the phone before our session or have partners and are on phone answering detail for lunch or something or are the only ones in the office, etc. they might have a problem once in awhile but forgetting all the time is not good.

I often dealt with things initially with sarcasm; I'd make some slightly snide comment. But my T was really on top of things most of the time; would get angry if people/other therapists were standing in the hallway outside the door of our office talking and would open the door and glare at them or ask them to move away, etc.