What is an E.164 number ?
An E.164 Number is a Number following the Global Dialing Scheme. The numbers resemble phone numbers and are hirarchically organized by world gatekeepers, country gatekeepers and local gatekeeper zones. Example the number 0049 893299 6005 routes the call via the German country gatekeeper 0049 to RZG's local zone 893299 and the extension (namely one of the vc groups hardware systems) 6005.
