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/var/spool/hylafax/config/usr-xon is in hylafax-server 3:6.0.6-5.

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# $Id$
#
# HylaFAX Facsimile Software
#
# Copyright (c) 1990-1996 Sam Leffler
# Copyright (c) 1991-1996 Silicon Graphics, Inc.
# HylaFAX is a trademark of Silicon Graphics, Inc.
# 
# Permission to use, copy, modify, distribute, and sell this software and 
# its documentation for any purpose is hereby granted without fee, provided
# that (i) the above copyright notices and this permission notice appear in
# all copies of the software and related documentation, and (ii) the names of
# Sam Leffler and Silicon Graphics may not be used in any advertising or
# publicity relating to the software without the specific, prior written
# permission of Sam Leffler and Silicon Graphics.
# 
# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
# 
# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
# OF THIS SOFTWARE.
#

#
# Configuration for using the Class 1 command interface with
# a USR Courier or Sportster modem and XON/XOFF flow control. 
#
# CONFIG:CLASS1:1444:.*:XON*|DEF*: Manufacturer=USRobotics Model=Courier/Sportster
# CONFIG:CLASS1:1445:.*:XON*|DEF*: Manufacturer=USRobotics Model=Courier/Sportster
# CONFIG:CLASS1:2886:.*:XON*|DEF*: Manufacturer=USRobotics Model=Courier/Sportster
# CONFIG:CLASS1:3366:.*:XON*|DEF*: Manufacturer=USRobotics Model=Courier
# CONFIG:CLASS1:3361:.*:XON*|DEF*: Manufacturer="USRobotics w/TI Chipset" Model="Sportster 33600"
# CONFIG:CLASS1:3362:.*:XON*|DEF*: Manufacturer="USRobotics w/TI Chipset" Model="Sportster 33600"
# CONFIG:CLASS1:3367:.*:XON*|DEF*: Manufacturer="USRobotics" Model="Courier"
# CONFIG:CLASS1:5601:.*:XON*|DEF*: Manufacturer="3Com U. S. Robotics" Model="3CP5610"
# CONFIG:CLASS1:5607:.*:XON*|DEF*: Manufacturer="3Com USRobotics" Model="Courier V.Everything"
# CONFIG:CLASS1:5608A:.*:XON*|DEF*: Manufacturer="3Com USRobotics" Model="Courier"
#
# BEGIN-SERVER
# END-SERVER
#
# Modem-related stuff: should reflect modem command interface
# and hardware connection/cabling (e.g. flow control).
#
ModemType:		Class1		# use class 1 interface
ModemRate:		19200		# rate for DCE-DTE communication
ModemFlowControl:	xonxoff		# software flow control
#
ModemSetupDTRCmd:	ATS13=1&D2	# setup so DTR drop resets modem
ModemSetupDCDCmd:	AT&C1		# setup so DCD reflects carrier (or not)
ModemNoFlowCmd:		AT&H0&I0&R1	# setup modem for no flow control
ModemHardFlowCmd:	AT&H1&I0&R2	# setup modem for hardware flow control
ModemSoftFlowCmd:	AT&H2&I2&R1	# setup modem for software flow control
ModemResultCodesCmd:	ATQ0X4		# enable result codes
#
ModemMfrQueryCmd:	!USR
ModemModelQueryCmd:	ATI3
ModemRevQueryCmd:	ATI7		# XXX returns a multi-line result
#
# When AT+FCLASS=1 is issued the modem automatically switches
# to software flow control; these parameters let the fax software
# reset flow control as needed after entering Class 1.
#
Class1NFLOCmd:		AT&H0&I0&R1	# setup modem for no flow control
Class1HFLOCmd:		AT&H1&I0&R2	# setup modem for hardware flow control
Class1SFLOCmd:		""		# modem does this automatically
#
# This should resolve "DIS/DTC received 3 times" errors:
#
Class1ResponseWaitCmd:	AT+FRS=1	# wait after sending TCF for response
#
# The remainder of this configuration is included so that the
# modem "idles" in Class 0 while not sending or receiving facsimile.
#
ModemSetupAACmd:	AT+FCLASS=0	# leave modem idling in class 0
ModemAnswerCmd:		AT+FCLASS=1A	# answer in Class 1
#
# When using AT+FRS=n we see USR modems reset themselves in the middle of sessions
# this is not good.  So, we seem to work-around that problem by not using the
# command.  Unfortunately, this isn't an ideal thing.
#
Class1SwitchingCmd:	"<delay\0727>"