“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
Cloud based Sip provider, Giving acces to voice in the cloud. Cutomer based sip hosting or dedicated hosted sip. Creating backup sip pbx for omnipcx Enterprise 40X8EE sets.