1) their old "landline" business, which is dying. They have still one customer which bring them 25% of their meager revenue. They lost the other "10%" customer.
2) Their Nokia Symbian VOIP app, revenues unknown but probably negligible.
4) Their Ojo subscriptions. Revenues unknown and not growing.
5) Their VoxMobile App revenue, all plans.
PVSP claims to be getting a 50% profit margin on App sales.