Packet Loss in Voice over IP Networks
- Two major technical evolutions
- digital voice communication
- packet-switched networks
- Main advantages over circuit-switched voice:
- statistical multiplexing gain
- service integration, unified packet-switching infrastructure
- fundamental tradeoff of „best effort“ network: statistical multiplexing vs. reliability of transmission ? packet loss ? significant distortions
- previous approaches to the packet loss problem: either end-to-end-only or hop-by-hop-only