Re: modem help needed

[Manish Kumar Arya <manish_ipx@yahoo.com>]

hi
   how can i detect DTMF codes on modem comming from
incomming phone call ?

-Manish
--- Manish Kumar Arya <manish_ipx@yahoo.com> wrote:
> hi
>    this is my second mail regarding modem problem.
> i have made lil progress in this
>   Lawson told me that i should recive "CONNECT" from
> remote system(modem/fax machine).I did tested my
> program by dialing to ISP and got "CONNECT" and
> there
> after "Login" and then "Password". its worked with
> Fax
> machine too, I was able to get "CONNECT" from fax
> machine.
>    but i m still not able to find way to communicate
> with normal phone calls (voice calls).
>    i have found a set of voice commands on net.
> 
> as per this doc i did set modem to voice mode
> 
> AT+FCLASS=8 
> AT+VSD=128,100
> AT+VGT=128
> AT+VGR=128
> AT+VRA=100
> AT+VRN=10
> AT+VCID=1
> AT+VNH=0
> AT+VIT=0
> AT+VDR=1
> AT+VSM=141,8000
> AT+VLS=1
> then at last i dialed to a voice phone no.
> ATDT238470
> and got "OK" reply from modem
> still wondering what to do next to start reading
> data
> on phone line
> 
> pls help
> 
> here is some part of that doc
> The AT Voice Command Set 
> 
> AT+FCLASS=8  Enter voice mode  
> AT+VIP  Initialise voice parameters  
> AT+VCID  Caller ID  
> AT+VDR  Distinctive ring  
> AT+VGT  Speaker volume control  
> AT+FMI?  Report manufacturer ID  
> AT+FMM?  Report product model information  
> AT+FMR?  Report product revision level  
> AT+VIT  DTE/DCE inactivity timer  
> AT+VNH  Automatic hang-up control  
> AT+VTD  Set beep tone duration timer  
> AT+VLS  Analog source/destination selection and
> DTMF/tone reporting  
> AT+VSD  Set silence detection timer  
> AT+VRA  Set ringback goes away timer  
> AT+VRN  Set ringback never came timer  
> AT+VTS  DTMF/tone generation  
> AT+VTX  Enter voice transmit state  
> AT+VRX  Enter voice receive state  
> AT+VSM  Voice compression method  
> AT+VEM  Event reporting and masking  
> AT+VGR  Receive gain selection  
> 
> -Manish Arya
> www.LinuxIndia.net
>   
> --- whitnl73@juno.com wrote:
> > On Fri, 21 Mar 2003, Manish Kumar Arya wrote:
> > 
> > > hi
> > >    i m writing a program to read data of an in
> > comming
> > > phone call using modem
> > >    till now i m able to get "RING" in my read
> > buffer
> > > when an incomming call comes.
> > >     after this i tried two answer the call by
> two
> > ways
> > > 1) ATA\r
> > > 2) setting ATS0=3 (3 rings) register
> > >
> > > but after answering the calls i dont get any
> data
> > on
> > > serial port.
> > >    is it really not possible to read data from
> > normal
> > > phone calls or i m doin some mistake.
> > 
> > By "normal phone calls", do you mean voice?  If
> you
> > do,
> > no, it isn't.  Dependig on your modem, there might
> > be a command
> > to make the thing answer in voice mode, but ATA is
> > not going to do it.
> > After a normal modem answers a call, it tries to
> > negotiate a data
> > connection with a remote modem, then if it is
> > successful (I think) sends
> > the report CONNECTED to the serial port.  If not,
> it
> > sends NO CARRIER
> > and hangs up.
> > 
> > t > i just want to read raw data from incomming
> > calls not
> > > in some voice format.
> > >
> > > help!
> > >
> > > -Manish Kumar Arya
> > > www.LinuxIndia.net
> > 
> > Lawson
> > --
> > ---oops---
> > 
> > 
> > 
> >
>
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