Call
Origination is the collecting of the call started by a calling party on a PSTN,
and handing off the call to a VoIP endpoint or to other exchange phone company
for completion to a called party
Call
Termination is a handing off or routing of calls from one Telephone Company to
another.
nfon is an IP-Centrex provider for enterprise customers. As the German market leader, nfon offers its technology also as a white label solution to other providers.