ugogan@ecsvax.UUCP (Jim Gogan) (06/14/89)
I'd like to get some feedback c/comments/etc. re: the use of 22 AWG vs. 24 AWG unshielded twisted pair wiring for data comm. - specifically for UTP Ethernet and LocalTalk. Also, anyone running both UTP Ethernet and LocalTalk over the same bundles? Any problems with crosstalk? Thanks in advance. -- Jim Gogan / Univ. of N. Carolina - Chapel Hill -- Jim Gogan MAIL:ugogan@ecsvax.uncecs.edu Microcomputing Support Center University of North Carolina at Chapel Hill Chapel Hill, NC 27599
morgan@Jessica.stanford.edu (RL "Bob" Morgan) (06/15/89)
Jim Gogan asks: > Also, anyone running both UTP Ethernet and LocalTalk over the same > bundles? Any problems with crosstalk? I did a *very brief* test (about 10 minutes) of AT&T's StarLan-10 product sharing a 3-pair unshielded sheath with Farallon's PhoneNet (the PhoneNet pair was going directly into a StarController). I was able to send data over both systems simultaneously with no apparent trouble, though I didn't get a chance to check with our Sniffer to see if there were any retransmissions (and now the AT&T stuff has gone away . . .). - RL "Bob" Morgan Networking Systems Stanford
josefk@well.UUCP (William B. Douglas) (06/15/89)
So far, we've never seen any problems with crosstalk or interference between Ethernet & PhoneNET in the same sheath in our tests here, nor have we received reports of such problems from the field. Nor, judging from our specs, do we ever expect to see any. Noise immunity on the PhoneNET side is > 600 volts. Blackey Douglas Tech Support Farallon Computing -- ...!{lll-crg,hplabs,cogsci,hoptoad,apple}!well!josefk