A GPRS service uses the mobile telephone network and is a data service similar to the EFTPOS machines used in taxi services. The GPRS was introduced to take advantage of new technology and to replace the aging Securitel network. Securitel was a Telstra service that used a pulse over a standard telephone line to check that the telephone line was still working. This was ceased as of January 2010. The GPRS service has the ability to communicate both ways between the security alarm and the control room.