Configurations
of GSM/VoIP networks allow the service providers to avoid the local Wired
Public Switched Network (PSTN) in communication with a GMS mobile handset. As a
result, the high rates charged by telephone companies are avoided.
Оne of the most popular number dialling types in the USA and Canada is 10 digit dialling, which represents itself a code of addressee’s location and directly the very number of the addressee.