computer simulation
17:02:23
routing digits
17:01:52
simultaneous operation
17:01:52
dial tone
17:00:52
automatic check
17:00:50
efficiency
17:00:30
dynamic game
17:00:23
communication channel
17:00:11
printing
16:59:09
remedial maintenance
16:58:31
background data
16:58:06
non-stop