Toshiba PSA20 - Manual (Page 213)

E-3
A
PPENDIX
E
* EC stands for the Error Control method, which appears only when the extended
result codes configuration option is enabled. EC is replaced by one of the
following symbols, depending on the error control method used.
V42bis V.42 error control and V.42bis data compression
V42 V.42 error control only
NoEC No error control protocol
AT Command
-V90=* V.90 Dial Line Rate
-V90 sets the maximum V.90 downstream that the modem attempts to
connect.
-V90=0 V.90 disabled
-V90=1 V.90 enabled: automatic speed selection - maximum modem speed
(default)
Appendix E