well thats a vague question, so here is a vague answer
it depends on the type of "knowledge" that is gained
from a most basic principles, a telco can use the knowledge of where the majority of its customers are based to guide them in where they need to expand there infrastructure most urgently and thus capture more customers and make more money
or it could use the data of where calls are routed to other networks and which are most popular and work on getting deals with other providers so that they can maximise profit/revenue
the answers to this question are potentially endless, its a vague question that will never have one definitive answer ultimately
in summary - knowledge should direct your actions or focus or refine your activities depending on the data you look at and capture - this is why business analysts have a job1
