Re: [hylafax-users] voice prompt playback before DTMF read?

["Ivan Petrov" <ivanp@xxxxxxxxxxxxx>]

Thanks for the great answer Lee!

About my qestion 1) - The hylafax version I'm using is hylafax-4.2.3-1rhel3 
(got it as precompiled RPM). I assume this is 4.2.3.1 you are refering to, 
so DTMF timeout feature should be in (as well as the voice - right?).
What happens when I try to send fax not entering the expected DTMF sequence 
is - hylafax answers, fax tones are definitely heard (fax request), but 
after about 30 seconds hylafax hangs up. Log file follows:

Jan  4 16:25:29 faxserver FaxGetty[2692]: ANSWER: Call ID 1 "4161111111"
Jan  4 16:25:29 faxserver FaxGetty[2692]: ANSWER: Call ID 2 "xxxxxxxxxxxx"
Jan  4 16:25:29 faxserver FaxGetty[2692]: ANSWER: Call ID 3 ""
Jan  4 16:25:48 faxserver FaxGetty[2692]: MODEM LT V.92 1.0 MT5634ZPX-PCI-U 
INTERNAL DATA/FAX/VOICE MODEM VERSION 1.32K LT V.92 1.0 MT5634ZPX-PCI-U 
Internal Data/Fax/Voice Modem Version 1.32k/

The config file I'm using is:

CountryCode:            1
AreaCode:               416
FAXNumber:              +1.416.111.1111
LongDistancePrefix:     1
InternationalPrefix:    011
DialStringRules:        etc/dialrules
ServerTracing:          1
SessionTracing:         11
RecvFileMode:           0600
LogFileMode:            0600
DeviceMode:             0600
SpeakerVolume:          yes
GettyArgs:              "-h %l dx_%s"
LocalIdentifier:        FAX
TagLineFont:            etc/lutRS18.pcf
TagLineFormat:          "From %%l|%c|Page %%P of %%T"
MaxRecvPages:           25
#

ModemType:              Class1          # use this to supply a hint
ModemFlowControl:       rtscts          # many firmwares have broken 
software flow control
Class1TMConnectDelay:   400             # counteract quick CONNECT response

# If your line supports Caller-ID, you may want to uncomment this...
ModemResetCmds: AT+VCID=1
CallIDPattern:  "NMBR="
CallIDPattern:  "NAME="
RingsBeforeAnswer:      2

CallIDPattern:          SHIELDED_DTMF
CallIDAnswerLength:     4
ModemRingResponse:      AT+FCLASS=8;H1
ModemAnswerCmd:         <delay:100>AT+FCLASS=1;A

Regards,
Ivan


----- Original Message ----- 
From: "Lee Howard" <faxguy@xxxxxxxxxxxxxxxx>
To: "Ivan Petrov" <ivanp@xxxxxxxxxxxxx>
Cc: <hylafax-users@xxxxxxxxxxx>
Sent: Wednesday, January 04, 2006 4:12 PM
Subject: Re: [hylafax-users] voice prompt playback before DTMF read?


> Ivan Petrov wrote:
>
> > I am trying to implement DTMF recognition in order to better route 
> > inbound faxes. So far I managed to get HylaFAX to wait and read the DTMF 
> > response.
> > What happens is modem picks up, waits for the DTMF entry then receives 
> > the fax,  Notification email after fax is received contains CallID3 entry 
> > with the DTMF responce entered, which is exactly what should be 
> > happening. This is great. However - if sending party does not enter the 
> > necessary count of DTMF digits hylafax closes the connection without 
> > receiving a fax.
>
>
> Yes, I am very familiar with the situation.
>
> > I have two questions:
> >
> > 1) Is it possible after specific time-out fax to be received no matter 
> > DTMF has not been entered?
>
>
> Yes.  (See below...)
>
> > 2) Is it possible to playback a greeting uppon line is answered to prompt 
> > sender to punch the x-digit code before submit?
>
>
> Yes.
>
> Both of these features were added to HylaFAX 4.2.3.1 (found at 
> http://hylafax.sourceforge.net) and are now also available in 4.2.4.1.
>
> The time-out part is not currently configurable (it's hard-coded at like 
> 10 seconds if I remember correctly), but it will automatically bypass DTMF 
> detection if fax tones are heard.  In those cases the CallID for 
> SHIELDED_DTMF will be whitespace for however many number of digits the 
> answer-length is (i.e. "    ").
>
> The voice part is a bit more tricky.  The man page says this about the new 
> "play" command-escape-string feature:
>
> -----------------------------------------
> The "<play:C>" escape can be used to play a raw audio file with a voice 
> modem.  The files are named etc/playC.raw where "C" is any character. 
> This feature can be used, for example, to play a brief audio message after 
> picking up the line but before answering.  A configuration example may be:
>
>   ModemRingResponse: 
> "AT+FCLASS=8;H1\nAT+VSM=131\nAT+VLS=1\nAT+VTX\n<waitfor:CONNECT><play:1><waitfor:OK>AT+VTS=[933,,150]"
>   ModemAnswerCmd:     "<delay:100>AT+FCLASS=1;A"
>   CallIDPattern:      SHIELDED_DTMF
>   CallIDAnswerLength: 4
>
> In this example using an IS-101 voice-compliant modem, a RING indication 
> from the modem will cause the modem to be placed in voice mode, set ulaw 
> audio compression, and via the connected phone line play back the 
> etc/play1.raw audio file, which may say, "After the tone enter a 
> four-digit extension, then start the fax."  Following the message a tone 
> is played.
> -----------------------------------------
>
> The reason this is "tricky" is because you have to develop that 
> ModemRingResponse yourself based on your modem commands per your manual 
> and you have to generate that etc/play1.raw file yourself based on the 
> settings used in that ModemRingResponse.
>
> I developed that example with a MultiTech MT5634ZBA-V92, so chances are 
> good that it will work for you also.  However, I'd recommend first start 
> testing without the "<play:1>" part (which, when omitted, will work with 
> any version of HylaFAX).  You'll not get any voice prompt, but you will 
> get a "beep" tone, and that will tell you that things are working up to 
> that point.
>
> Generally, to generate the etc/playC.wav file you'd take any regular WAV 
> file that you want to be your voice prompt and then you would use 
> something like sox to convert it into raw digital audio, probably slinear, 
> uLaw, or aLaw at 8000KHz or something.  The "format" of the raw audio data 
> in that file that you use will depend on the commands you use in the 
> ModemRingResponse.  In this case the governing command is "AT+VSM=131" 
> which is explained by "AT+VSM=?" to be 8-bit uLaw at 8000KHz.  So the sox 
> command would be something like this:
>
>  sox your_file.wav -U -b -r 8000 -c 1 play1.raw
>
> Then you copy that play1.raw file to /var/spool/hylafax/etc/, and then 
> you'd add the "<play:1>" part to the ModemAnswerCmd, restart faxgetty, and 
> then try it again.
>
> Hope this helps,
>
> Lee.
>
>
> ____________________ HylaFAX(tm) Users Mailing List 
> _______________________
>  To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
> On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
>  *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*


____________________ HylaFAX(tm) Users Mailing List _______________________
 To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
 *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*