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