QuickMail and TOPS.

sharing, and by such network services as 

AppleTalk Filing Protocol (AFP) file 

AppleTalk Session Protocol (ASP) used by 

LaserWriters and other printers, the 

Access Protocol (PAP) used by 

and applications, including the Printer 

request. ATP is used by several services 

from the node that made the original 

with an acknowledgement (TRel) packet 

packets (TResp), and possibly ending 

followed by one to eight response 

comprises a request (TReq) for data, 

transaction identifier (TID) and 

transaction is identified by a unique 

a series of packet exchanges. Each 

that provides reliable communications as 

Protocol (ATP) packet. ATP is a protocol 

This is an AppleTalk Transaction 

ATP