Dear teacher,
Mark Walter, head of technology for the Buffalo school, said the system was working well now. But Mr. Walter cautions that the more ambitious technological efforts in Spring, particularly given the reliance on cellphones to call in the data, are "going to run in to some problems."
Q : "call in" means "ask" in the context, doesn't it?
=>given the reliance on cellphones to ask the data
All the best,
call in
Moderator: Alan