Of course.
I can't imagine that T wouldn't give his/her phone, sometimes client need to change time or date of session etc.
He gave me his email when I asked but anyway his phone and email is available on google
I call him very rarely only if it's something serious, I don;t call him in every crisis. I try not to email him but sometimes I do it, he always says that we need to talk about it at session not email.

Sad that your T doesn't give you his number, maybe he had bad experiences with ex clients calling him too much or at night so he decided tnot to give his number.