Services Bill. It will include ‘monthly rental’, ‘Airtime charges’ and ‘BSNL/Fixed Line charges’ incurred by all calls made by the subscriber. Airtime charges are calculated at a pre-determined rate per unit time (as per tariff structure declared from time to time), or any other charges. BSNL /Mobile/ Fixed Line Charges : Whenever a call is made from a Cellular phone to an BSNL or any other company’s phone or when long distance network is used, certain amount levied by BSNL/MTNL/ other operator which is normally called BSNL /Fixed Line charges. This includes the Local, STD and ISD charges. Sales Executive / Sales Force/ FoS: In the interest of increasing the customer base, the Franchisee can appoint sales force except Rural Distributor for booking new connection and selling of prepaid cards. FoS are appointed for servicing the retailers. However retailers in area of Rural Distributors shall be appointed by respective RDs. Activation Fee: Onetime non-refundable charges levied for energizing a cellular phone connection.