|
PSTN/IN |
Internet |
Converged Network |
|
|---|---|---|---|
| Multimedia services | No | Yes | Yes |
| QoS-enabled | Yes (voice) | No | Yes |
| Network intelligence | Yes | No | Yes |
| Intelligent CPE | No | Yes | Yes |
| Underlying transport network | Circuit switching | Packet Switching | Packet Switching |
| Service architecture | Semi-distinct | Ad hoc | Distinct |
| Integrated control and management | No | Yes | Yes |
| Service reliability | High | Low | High |
| Service creation | Complex | Ad-hoc | Systematic |
| Ease of use of services | Medium | High | High |
| Evolvability/modularity | Low | Medium | High |
| Time to market of services | Long | Short | Short |
| Architecture openness | Low | High | High |