Data Link Simulator II
Simulates communications facilities. 78 data rates from 1,200 to 50M bps. Inserts delays up to 1.999 second in each direction. Inserts errors and timing slips in each direction. Supports T-1, E-1, RS232, V.35, RS422/RS530, X.21, HSSI, T-3 and E-3. Context-sensitive help screens