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The lack of circuit switching and bandwidth.
by sargun 7y ago
The lack of circuit switching and bandwidth.
- Animats 7y agoExactly. ISDN was a 64kb/s circuit switched channel end to end, rigidly clocked. Every bit came in on schedule. Voice with no jitter. A friend of mine in Switzerland had ISDN home phones until last month, when Swisscom discontinued it in favor of a VoIP system with worse voice quality. If there had been a video successor to ISDN, say a 10mb/s circuit, we'd have real time HDTV video chat with no jitter. Voice and video over IP only work because of horrible kludges to deal with jitter and lag.