* X.25 NETWORK PACKET LEVEL:
* This implementation is based on Recommentation X.25 as agreed at the
* March 1976 and the February 1980 meetings of CCITT Study Group VII.
* However, not all aspects are implemented. The following is a list of
* features which are not yet or may never be implemented:
* Note: This implementation is for DTEs only.
* Currently, only the 1976 verison is implemented.
* Author: Gerald W. Neufeld
* Installation: Department of Computer Science
* University of British Columbia
* To Do: Find some reasonable heuristic for piggybacking packet
* Bugs: Clear might be sent before data is all out.