Well true. I was hoping there was some way I could use it like one of the LocalTalk star switches where every segment of the network could have the full throughput of the port.
I realize that I really asked the wrong question. Instead of using the connections for LocalTalk boxes I was hoping it would be possible to actually network Macs together using Serial->Serial connections. Instead of a peer-to-peer bus network (typical PhoneNet) they would all go through a central workgroup server. It would handle the 'routing.'
The Printer port of all attached Macs would connect to the central WGS (each to a port on the card). They would each see the server as a direct serial connected Mac.
D'OH!
Hmmm ....