; 1993-97 SDF AT&T 3B Network Configurations


           [14.4kbps] [14.4kbps] [14.4kbps]
*[adaptex] [14.4kbps] [14.4kbps] [14.4kbps]
*[egsner]  [14.4kbps] [14.4kbps] [14.4kbps]
    ||           \\\     |||        |||
    ||            \\\    |||        |||
  eports           -----eports     eports
-------------------   -------------------
| === | 3b2/400     | | === | 3b2/400     |
|_____|_____________| |_____|_____________|
|    ;| 'news'    ..| |    ;| 'sdf'     ..|
-------------------   -------------------
  |              \________________________\
  |               |      1mb/s starlan
  |               |           rfs
 -------------------
|    ;| 3b2/310   ..|            --------
 -------------------            | unixpc |
 /      'minmei'                |  7300  |
|    (layers server)            |'mapcar'|
|                              __--------_
|        --------             \            \
|       |        |            \\____________\
|       ||       |
|       |        |
|       |        |
|       |       ||
 \      |        |
  |      -------- ,
[abc]   __|____|__ `,  ___
 box   /          \ `~(...)
      /____________\
         tty 5620
          syscon

 * 'egsner' and 'adaptex' brought in email and usenet
   news respectively.  both ran connections at 19.2kbps
   using telebit's PEP (packetised ensemble protocol)

... in 1996 lucent technologies donated a 3b2/522.
    adaptex stopped feeding news and dialups were cut.
    the configuration went from that above to this:

        -------------------
       |                   |
       |                 xm|
        -------------------
        -------------------
       | === | 3b2/522     |
       |_____|_____________|----------
       |    ;| 'sdf'     ..|    \ \ \ \
        -------------------     [modems]

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