Quality of Service (QoS) Standards for 3G Public Cellular Mobile Telephone Services for Jan- Dec 2011
The definition of service coverage is based on signal strength. The availability of service coverage is therefore the ability of a network in achieving a minimum signal strength of -100dBm. Of the successful calls established by the mobile networks along expressways, major and secondary roads/ streets, an average of 108,558 samples of signal strength were obtained for each network.
This indicator measures the success of a call attempt. A successful call attempt is when the calling party gets a connection to the called party either through a ringing tone or an engaged tone. The call success rate shown below is based on an average of 1367 call attempts per network.