Toshiba Satellite L300 Series User Manual page 164

V42bis
V42
NoEC
AT Command
-V90=*
-V90=0
-V90=1
User's Manual
V.42 error control and V.42bis data compression
V.42 error control only
No error control protocol
V.90 Dial Line Rate
-V90 sets the maximum V.90 downstream that the
modem attempts to connect
V.90 disabled
V.90 enabled: automatic speed selection -
maximum modem speed(default)
V.90/V.92
C-3