It's not clear what PT had in mind for this odd movie about phone sex -yes, oral means aural here.
Star Janine becomes obsessed once she's turned on by an obscene phone call, and masturbates a lot as well as indulging in lesbian sex. An even more emphasized plotline is confusing, as we observe Leena and a pre-Wicked (working for competitor Vivid) Brad Armstrong as cops apparently with the vice unit, listening/taping obscene callers. Brad rightfully objects to this waste of police resources but Leena is gung ho. He turns out to be the caller Janine is obsessed with.
A very lengthy scene has many cops having sex on the stairs and hallway at police headquarters, evidently just an erotic fantasy by Brad. Casting is pretty weird, as Max Hardcore plays a cop having anal sex with Vixxxen. In addition, Janine's insistence on not doing boy/girl porn scenes when this was made screws up the plot once she meets Brad in person.