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Ericsson Expander is a package of enhanced network components that allows mobile operators to extend coverage with a minimum of base stations . Ericsson Expander provides low total cost of ownership ( TCO ) for operators expanding into areas with no coverage . In addition , the new Ericsson Expander has been well received as an enabler for communication in rural areas in developed as well as in high-growth markets . Therefore , Ericsson Expander includes also the core network and the transmission network . Ericsson Expander provides cost efficient coverage - opening up new segments and markets - while maintaining low total cost of ownership ( TCO ) for the network . Ericsson Expander is a set of network solutions that allows operators to cost-effectively extend coverage into new areas . Ericsson Expander has been developed to meet these needs through advanced functionality that minimizes the number of sites required . Ericsson Expander provides the technology and business models to maintain and even reduce a low total cost of network ownership . While still offering lower total cost of ownership , Ericsson Expander maintains cost-efficient coverage with mainstream high-quality products , rather than cutting costs by offering reduced functionality and quality in the radio equipment . " Ericsson Expander has been delivered to a number of operators worldwide .