... SMS Printer 1. Airtime Recharger, Prepaid Airtime, Money Transfer 2. GPRS, IVR, SMS, STK, USSD Key Words: cell airtime, ... English, Spanish, Arabic, Thai, Italian etc.Multiple charging channels: GPRS, IVR(voice), SMS, STK or USSDStores charging records such as ... wireless PBX, IP-PBX, air-charging system, school-family intelligent network, billing meter,fixed wireless terminal seriessms printer, air ...