In Germany during the 80ies and 90ies
Automation of the acoustic coupler
Standard | Rate (bps) | Year created |
---|---|---|
V.21 |
300 |
1962* |
V.22 |
1200 |
1980* |
V.22bis |
2400 |
1984* |
V.32 |
9600 |
1984* |
V.32bis |
14400 |
1991 |
V.32ter |
19200 |
1993 |
V.34 |
28000 |
1994 |
V.34bis |
33600 |
1996 |
V.90 |
56000 |
1998 |
What’s a BBS?
To operate a BBS, you had to have
To use a BBS, you
Time for a demo
Note
|
I’m using telnet instead of modem/dialup (POTS lines hard to find these days) |
In the spirit of protocol stack diagrams…
To participate in bulletin/message boards
Advantages:
As opposed to individual BBSs with isolated communities…
Idea: Replicate bulletin / message boards between independent BBSs, for
Early ways to access Internet:
Popular software stack looked like:
With packet-switched TCP-IP
This brought new purpose to leased lines
Easy upgrade to get performance of a leased ISDN line out of an Analog-G
When the first DSL modems became available in the US
In the BBS days
This autonomy and de-centralization has been lost in the Internet age
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