[hylafax-users] Undesired CID Detection

[Bruce Halco <bhalco@gtemail.net>]

This is one of those fun intermittant problems.

The setup is Hylafax 4.1.5 on Redhat Linux 7.3, installed from
hylafax-4.1.5-1rh7.i386.rpm.  The modem is an AOpen FM56EX
(generic Rockwell-style modem).

I am using HylaFax with distinctive ring to receive faxes at home. Calls
to the fax number ring as "RING2".   Most of the time everything works
fine.  Occasionally, though,  a call will come in on the voice number,
and the modem will go off-hook immediately *after* I have answered the
call with the phone.  This has happened three times so far.  I have just
found that there are corresponding entries in /var/log/messages, looking
like

      FaxGetty[1269]: ANSWER: CID NUMBER "RING1" NAME "RING1"

So it seems that faxgetty thinks it has found a CID match.

Since this happens just after I manually answer the call, I expect the
strings from the modem are somehow confusing to faxgetty.  The phone in
question was plugged into the output jack in the modem itself.  I have moved
the phone to a spitter at the modem input jack to see if that helps.

This has only happened when answering with this phone (rather than
another extension), but does not happen everytime I answer with this phone.

In every case, the incoming call has come from the same number, but it
does not happen every time this person calls from that number.

I do not subscribe to Caller ID.

I have seen the discussion in the archives involving "RING " prefixes to
ring codes. but there are no spaces in my ring codes.

As a workaround, I am considering placing a QualifyCID line in my config
file, without a corresponding /etc/cid file. Should I expect this to
help? Any other suggestions?

Config file follows for reference.

Thanks for any help.

Bruce Halco

---

CountryCode:		1
AreaCode:		440
FAXNumber:		440.461.xxxx
LongDistancePrefix:	1
InternationalPrefix:	011
DialStringRules:	etc/dialrules
ServerTracing:		1
SessionTracing:		11
RecvFileMode:		0664
LogFileMode:		0664
DeviceMode:		0664
RingsBeforeAnswer:	1
SpeakerVolume:		off
GettyArgs:		"-h %l dx_%s"
LocalIdentifier:	"HalComp"
TagLineFont:		etc/lutRS18.pcf
TagLineFormat:		"From %%l|%c|Page %%P of %%T"
NoCarrierRetrys:	3
MaxRecvPages:		25
#
#
# Modem-related stuff: should reflect modem command interface
# and hardware connection/cabling (e.g. flow control).
#
ModemType:		Class1		# use this to supply a hint
ModemRate:		19200		# rate for DCE-DTE communication
ModemFlowControl:	rtscts		# default
#
ModemNoFlowCmd:		AT&K0		# setup no flow control
ModemHardFlowCmd:	AT&K3		# setup hardware flow control
ModemSoftFlowCmd:	AT&K4		# setup software flow control
ModemSetupDTRCmd:	AT&D2		# setup so DTR drop resets modem
ModemSetupDCDCmd:	AT&C1		# setup so DCD reflects carrier (or not)
#
ModemMfrQueryCmd:	!Rockwell
ModemModelQueryCmd:	!RC288DPi
ModemRevQueryCmd:	ATI3		# product information
#
ModemDialCmd:		ATDT%s		# T for tone dialing

Class1Cmd:		AT+FCLASS=1.0	# command to enter class 1.0
Class1PPMWaitCmd:	AT+FTS=7	# command to stop and wait before PPM
Class1TCFWaitCmd:	AT+FTS=7	# command to stop and wait before TCF
Class1EOPWaitCmd:	AT+FTS=9	# command to stop and wait before EOP
Class1TCFResponseDelay:	75		# 75ms delay between recv TCF & response
Class1SendMsgDelay:	75		# 75ms delay after training
Class1SwitchingDelay:	75		# 150ms delay in switching transmission direction
Class1TrainingRecovery:	1500		# 1.5sec delay after training failure
Class1RecvAbortOK:	200		# wait 200ms for abort response
Class1FrameOverhead:	4		# 4 byte overhead in recvd HDLC frames
Class1RecvIdentTimer:	40000		# 35+5secs waiting for ident frames
Class1TCFMaxNonZero:	10		# max 10% of data may be non-zero
Class1TCFMinRun:	1000		# min run is 2/3rds of TCF duration

ModemResetCmds:		AT-SDR=7S10=50
RingFax:		RING2		#



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