It is a call which is made over internet protocol (VoIP). For example,
one can call using Google Voice to other recipient located miles away. Such
call can also be international.
Quintum Tenor VoIP MultiPath Switch DX2030 allows you to reap benefits from the technology of IP-telephony (VoIP). One Tenor DX2030 solution integrates a gateway, a gatekeeper, and intelligent call routing technology, and supports quality of service (QoS).