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15–8
Class 2 Flow Control
Flow control is necessary to match the DTE-DCE data rate to the line signaling
rate while transmitting or receiving Group 3 (T.4) data. In Class 2 fax mode, both
hardware (RTS/CTS) and software (XON/XOFF) flow control are enabled.
CLASS 2.0 "AT+F" COMMAND SET.
Commands
n=70 Receives the error on phase B hang up code.
n=90 Receives the error on phase C hang up code.
n=100 Receives the error on phase D hang up code.
+FNSC:"
HEX
string
" Reports the non-standard facilities command
frame.
+FNSF:"HEX string" Reports the non-standard facilities frame re-
sponse.
+FNSS:"
HEX
string
" Reports the non-standard setup frame re-
sponse.
+FPOLL Remote polling indication.
+FPTS:n Receive page transfer status response; refer to
+FPTS=n command.
+FTSI:"string" Report remote ID response TSI.
+FVOICE Transition to Voice response.
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.
+FBO=n Phase C data bit order:
n=0 Selects direct bit order.
n=1 Selects reversed bit order in receiving mode for
phase C data.
+FBS? Buffer size parameter; read only.
Response
Value Function and Description