It would appear that the usage of call on someone meaning to visit someone, usually for a short time, as in “We could call on my parents if we have time” has become somewhat obsolete according to this post on ELL.
The idiomatic expression is well present in main dictionaries and in the ODO, for instance it is cited as the first meaning:
(1)Pay a visit to (someone):
- ‘he's planning to call on Katherine today’
while the Cambridge Dictionary (3rd entry) defines the expression as an AmE one:
call on someone (phrasal verb with call US ) to come to see someone; visit:
- She went to the hospital to call on a sick friend.
So, is this expression still used and commonly understood or is it actually “dated”? or is it more a question of AmE vs BrE usage?
Edit:
After I posted this question a new answer, (actually a wiki answer) has been posted on the ELL question which appears to contradict the main accepted one. Hope someone can offer a more conclusive answer to this question, if possible.
(ASK TO DO)
that is American, the meaning that you cite does not specifically say it is AmEng. See the BrEng variant call on somebody