Subject:   -26- Why can't I 'talk' to Suns?
Date: 16 Mar 1994 00:00:01 EST

  SGI, and most Unix vendors, use the 4.3BSD talk protocol, while Sun
  still uses the 4.2BSD talk protocol. The fault is Sun's, not SGI's.
  Look in ftp://thor.ece.uc.edu/pub/sun-faq/ for Sun-compatible versions
  of 'new talk' (ntalk.tar.Z) and 'ytalk', which speaks both old and new
  'talk' (ytalk-3.0.1.tar.gz).

  You could also run 'ytalk' on your SGI. Get it from
  ftp://ftp.uu.net/usenet/comp.sources.unix/volume27/ytalk-3.0/.