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15–3
Modulation values
* w/st means with V.17 short training
Class 2 Command Set
The following Class 2 commands are supported and implemented per TIA
PN2388 (8/20/90).
Supported Commands (per TIA PN2388 8/20/90)
Value
Modulation Speed Requirements
3 V.21 ch. 2 300 required for FTH & FRH
+FTH and +FRH support value 3 (V.21 ch. 2 / 300 bps) only.
24 V.27ter 2400 required for FTM & FRM
48 V.27ter 4800 required for FTM & FRM
72 V.29 7200 required for FTM & FRM
73 V.17 7200 required for FTM & FRM
74 V.17 w/st 7200 required for FTM & FRM
96 V.29 9600 required for FTM & FRM
97 V.17 9600 required for FTM & FRM
98 V.17 w/st 9600 required for FTM & FRM
121 V.17 12000 required for FTM & FRM
122 V.17 w/st 12000 required for FTM & FRM
145 V.17 14400 required for FTM & FRM
146 V.17 w/st 14400 required for FTM & FRM
Command Syntax
Description
+<command>=<value> Executes a command or sets a parameter.
+<command>=? Reads permissible settings.
+<command>? Reads the current setting.
Command
Value Description
+FAA=n Auto-answer mode parameter:
n=0 The DCE answers as set by +FCLASS.
n=1 The DCE answers and auto-determines the call
type.
+FBADLIN=
<
value
>
0-255 Bad line threshold (number of consecutive bad
lines for a bad page parameter):
Determines if the "Copy Quality OK" on the T.30
flow chart is met. <value>=0 to 255; a value
of 0 implies that error checking is disabled.