4 ms·
Even worse - this assumes you can get your 56K modem to connect at 56K (and remain connected at that speed). Seventeen or so years ago when I had dial-up, I wa
by mdip 10y ago
Even worse - this assumes you can get your 56K modem to connect at 56K (and remain connected at that speed).
Seventeen or so years ago when I had dial-up, I was lucky to get a stable 24k connection due to a variety of issues related to poor in-home wiring and outside phone wire quality. 16.8k was always reliable, above that, it was hit and miss. Maybe things have improved enough since then that a 56k connection can be taken for granted, but the wiring in my house hasn't changed, so to the extent that it was my wiring at fault, I'd assume I'd still issues.
- JoeAltmaier 10y agoAnd then there was the protocol issue. Some HDLC protocols spent more time polling than transferring data. I rewrote one (for ConvergeNet) that turned a packet protocol into a streaming one. The rule was: if you have a packet, send it. Then send feedback about what packets were received. Once the high-water mark passed a buffered packet #, it could be freed. This achieved nearly wire speed in the good case. Anyway, blast from the past.