My first job in IT was at a small company, “A,” that researched telephone data for a very large company, “B.” You see, company “B” was a huge multinational conglomerate with offices all over the world. This meant they had several telephony providers that charged them not only for actual phone usage but also for the phone ports in the PBX.
That meant I spent days each week researching which phone ports were actually used by calling the phone numbers with little or no usage. It was boring and tedious, to say the least, but at least I got to listen to some awesome podcasts when podcasts first started becoming popular.