can I have the telephone line connected outside my house where I want it?
Possibly, possibly not. It will entirely depend if it feasible or not.
I assume you’re talking about the point where the drop wire is attached to?
If so then depends on several factors, perhaps a description and maybe some photos of where you’d like it and as an ex Customer Service Engineer for Openreaches Service Delivery Team I can tell you if it’s possible or not.