Aihnss.1423
net.lan
utcsrgv!utzoo!decvax!duke!chico!harpo!uwvax!ihps3!ihnss!karn
Mon Jan 18 22:15:01 1982
Undocumented Sytek Command: xyzzy
I just found out about an interesting undocumented command on the
Sytek Localnet 20 equipment: xyzzy.  (Believe it or not!)

Setting "xyzzy on" will cause a "call" command to repeat indefinitely
instead of aborting if the called PCU does not answer.  This makes
it easier to go around the coax system measuring levels with a
spectrum analyzer.  Be careful with this command, though; you will
lock up the channel, keeping others from using it.  It is probably
best to do any testing on an otherwise unused channel.

Credit to Fred Sigurdson at Western Electric for this information.
Does anyone else know of neat undocumented commands for the Sytek
equipment?

Phil Karn
Bell Labs, Indian Hill

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