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SERIES II INTELLIGENT DATA/FAX MODEMS
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.
5.4.11 Speed Conversion Commands
Speed conversion is a necessary part of data compression since data
must be presented to the modem faster than it can handle data, if data
compression is to be effective.
Speed conversion allows the Series II Modem to communicate at one
speed over the phone line, and at another speed at the RS232C
interface. The speed (also referred to as “data rate” or “baud rate”) can
be fixed at the RS232 interface independently of the baud rate of the
on-line transmissions.
In addition to data compression, another popular application for speed
conversion involves an auto-answer Series II Modem connected to a
computer that does not have autobaud capability. This means that the