[net.lan] Z-tel Packet Ring --- Information Requested

kjchapman@wateng.UUCP (Kevin J. Chapman) (11/19/84)

>
     While reading an AT&T blurb on their Information Systems Network (ISN)
 I ran across a reference to what appears to be a packet-switched voice &
 data PBX.  It's called "Packet Ring" and is manufactured by Ztel.  Does anyone 
 know where I might be able to get more information on this beast?  I'm mainly 
 interested in the media access protocol & related low-level stuff.
     Thanks in advance.
 
                          Kevin Chapman
                          Computer Communications Networks Group
                          Waterversity of Uniloo
                          'Loo, Ont., Canada