VoIP Domains
The Four Faces of VoIP
- Network Transport
- Internet, Private IP, IP over FR/ATM/MPLS
- IP Telephony Service Providers (ITSP)
- Network Edge
- Routers/Frads with Voice, Gateways
- CPE or managed service
- Premises Infrastructure
- Services and Applications
- Distributed Call Center, Custom Calling Services / AIN
An exhaustive treatment of VoIP requires that these areas be treated separately and as a whole