The Topupmeters head-end system combines cloud based services with a wireless network infrastructure to create a secure prepayment system.

The Topupmeters system contains several independent components to ensure robust operation and security.  The Topupmeters website where customers can purchase energy is hosted indepentely of the main application service where administrators manage meters.  This means any interruption to the service on the payment site does not affect the management of meters and vice versa.

GSM/GPRS Communications

Smart meters communicate over the GSM mobile phone network to send readings and receive top-up codes.  Smart meters use SIM cards for connecting to the networks in the same way as mobile phones.  Unlike cell phones the SIMs are restricted to data networks for sending