My decoder ring is broken, so I am not sure what you're saying, but I'll take a stab at it anyway.
If you are referring to whether or not getting paid has any correlation to being on-duty... it does not. You can be paid and be off-duty, or you can be on-duty and not being paid. The OP was not asking about whether he should log his sales calls (to be legal, he should), he was just asking how to log it.
If i were to spend my weekend hometime working for mcdonalds. Most would say be legal and log it on duty. Even though i wouldn't have any hours to use.