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Chapter 5 - Command Mode
5.4.10 Compression, Error Correction, Flow Control, Pass-Through and Pacing Commands
The modem has a variety of commands to control its error correction and data compression options.
These additional commands are listed below. (Remember to precede each command with the AT
characters.)
Normal/Auto-Reliable/Reliable Mode Commands:
&E0 = Normal Mode
&E1 = Auto-Reliable Mode*
&E2 = Reliable Mode
Modem-Initiated Flow Control Commands:
&E3 = Disables flow control (no flow control)
&E4 = Hardware flow control (CTS on/off and RTS on/off)*
&E5 = Xon/Xoff flow control
Xon/Xoff Pass-Through Commands:
&E6 = Modem responds to Xon/Xoff characters, but does not allow Xon/Xoff characters to pass
through to remote site.*
&E7 = Modem responds to Xon/Xoff characters, and allows them to pass through to remote site.
#X0 = Selects single Xoff character until Xon level returns*
#X1 = Selects multiple Xoff characters after buffer levels is full.
Enq/Ack Pacing Commands:
&E8 = Enq/Ack method of pacing off*
&E9 = Enq/Ack method of pacing on
Normal Mode Modem Flow Control Commands:
&E10 =Normal Mode Modem Flow Control off*
&E11 =Normal Mode Modem Flow Control (Xon/Xoff) on
Computer-or Terminal-Initiated Flow Control (Pacing) Commands:
&E12 =Pacing off*
&E13 =Pacing on (either RTS on/off or Xon/Xoff depending on the setting of &E4 or &E5).*
Data Compression Commands:
&E14 = Data Compression disabled
&E15 = Data Compression enabled*
*Factory Default setting