With this technology existing services and resources that are already used for data transmission are harnessed, thereby eliminating the cost of expensive line dedication as is the case with the PSTN.
N'ụzọ dị otú a, ụlọ ọrụ na ihe onwunwe ndị dị ugbu a bụ ndị ejirila maka nnyefe data na-ejikọ, si otú ahụ wepụ ụgwọ nke nraranye dị oke ọnụ dịka ọ dị na PSTN.