|  |  |  |  |  |  |  |  | 
   
    | n | End-users
    (individuals and companies) 
 |  | 
   
    |  | 
   
    | n | Information service
    providers (As a telephone catalog 
 |  | 
   
    |  | services
    designed by a company, giving telephone numbers 
 |  | 
   
    |  | when you give a
    name or an address) 
 |  | 
   
    |  | 
   
    | n | Service
    brokers sell dedicated service packages (as MySAP) 
 | 
   
    |  | 
   
    | n | Network operators
    (as Elisa, Telia, or Radiolinja) 
 |  | 
   
    |  | 
   
    | n | Content
    providers (as Paramount Pictures) 
 |  |