RECORDING CALLS, DTMF SEND, PHONE S/W MOD - CODERS REQUIRED

[sainthalo]

Hi on my older phones like siemens there was an option to send dtmf tones which i used a lot.

EG.

1) I call 0800 CALLING CARD number and get a dialtone from the callco
2) I quickly go into my contacts and pull out the relevant contact and send the number as a dtmf tone
3) I get through to the contact

I really need to be able to send dtmf tones asap! :cry:

[PLEASE READ POST 8 FOR DETAILS ABOUT RECORDING CALLS AND MODIFYING PHONE SOFTWARE]

[sainthalo]

seems to be some software which does it but if any other ideas or software please let me know.

http://www.mobidial.com/mD/

[oruam57]

Try dialDTMF at http://sourceforge.net/projects/dialdtmf
On my Jam it works flawlessly.

--------------
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[sainthalo]

Hi there thank you for the pointer!

I am about to try it out later today but have been reading about dialDTMF on here:

http://dialdtmf.sourceforge.net/

It sounds like it is designed before pocket pc's became phones simply to send a dtmf tone through to another phone by holding the pocket pc over the mic of the other phone. In this sense I would describe it as "Emitting DTMF tones" as oppose to "Sending DTMF tones".

This is different in the sense I would like to call a freephone number on the magician and then send the tones on the magician from my contacts. This is what I am calling "Sending DTMF tones".

Im hoping that even though it is designed to *emit* DTMF tones the sound is loud enough to go through to the freephone calling card company!!

Fingers crossed.

If anyone knows of a "Send DTMF tones" solution for the HTC Typhoon - SPV C500 / Sp3 please also post it, thank you!

[clach04]

Hi All,

I'm the developer of dialDTMF, Glad to hear it works out for some people,

As for cell phone support, you are correct it does not send DTMF's using the cell phone api it just makes sounds. You could try upping the volume and hope the mic picks it up like sainthalo mentioned.

The alternative would be to take the source code and update it to send the DTMF tone rather than play it. This would fairly easy for a cell phone developer to do (I don't have time or a cell phone that runs wm2003), should just be a couple of new functions. I'm happy to discuss (via email) though if some one wants to try, The source code is freely available. You could also check out http://artax.karlin.mff.cuni.cz/%7Ejsyk7570/Xialer/ but it doesn't really handle calling cards.

I've a potentiall silly question: Are 0800 numbers free to call from mobile phones in the UK now? The last time I was over there they weren't (only from landlines). It maybe that using a calling card won't save any money.

Chris

[sainthalo]

Hi there clach04,

Thanks for signing up to these forums to help in this quest! :)

DialDTMF works as it is designed - as a Pocket PC DTMF tone generator but not to send DTMF tones down the Magician phoneline.

Okay, i'm sad to report that it does not work because it is not using the api and so is a "DTMF Emitter" rather than a "DTMF Sender".

There are several coders around here who are very active so god willing one of them will be along to help although it's something like this which gives the real urge to learn how to code. DO you have any advice for me (links, tools, etc) if I were to try and achieve this myself?

As for the 0800 codes there are some tarriffs left in the UK where you are entitled to call 0800 numbers to come off free minutes or simply as genuine free phone calls - thankfully I have one of these older contracts and therefore I can use calling card services.

Best regards
sainthalo

[vijay555]

Guys, I would love to help out but with my upcoming nuptials (http://forum.xda-developers.com/viewtopic.php?t=27643) it might be difficult.

However, I'm thinking thus:
Emitting DTMF is easy, play it out of the speaker.
Sending dtmf will require interfacing with the Phone part of the PDA; you should be aware that our PDA Phones are actually two semi-independant devices, phone and PDA; have you noticed you can switch off the PDA and still continue with a call? The two devices communicate through a virtual COM port:- this is done through AT commands and/or RIL. This is not an area of the PDA I have had much experience with yet, but what I understand so far is that it is very difficult to send data through to the Phone part of the PDA, from the PDA part.

This sounds absurd, and I may be absurdly wrong, but I suspect it is a similar problem to the existing issue about recording in-progress telephone calls. We don't yet know how, or if it is possible at all to interface directly into that part of the PDA and interact with the data, and so recording both sides of a phone calls is currently considered impossible.

I know user Pai has done a lot of work on Cell ID and other interfacing on that side of things. I suggest giving him a bell (no pun intended!) and asking his opinion.

I'll try to monitor this thread though.
clach04 - Do you have any further thoughts on this?

V

EDIT: Guys, I just had a thought. In the very old modem days school, we used to dial using at commands AT P (for pulse dialling, or AT T for tone)
eg AT P 123 would dial 123
It would do this by generating DTMF tones!
It should be possible I presume to send DTMF tones in this way as discussed above (RIL/AT). Anyone concur? This can be tested I presume with a terminal program, or just find COM code on this board. I'll try to find it if I get a chance.

V

[sainthalo]

Hey thanks Vijay, i'll keep my fingers crossed you come back to think about this in the future!

I have had another thought following Vijay's post and realised that a few other bugbears which many people find a tad annoying and would like to circumvent are possibly linked to this case. I have read on here people would like to play a recording/song from the Magician to a caller they are speaking to. I have done this many times on a Siemens SL45i but not on HTC Typhoon or Magician.

Im guessing the inability to play a Magician located recording/song down the Magician phoneline is down to the same reason that the dtmfDialer will not make a noise during a call - something is blocking out use of the speaker by PPC based software. Im assuming it is the PHONE software which locks out other PPC software.

If we can hack the PHONE calling software so that it allows other software to operate as normal it may well impact/solve the following problems:

Recording both sides of voice calls clearly
Sending DTMF tones
Playing recordings/music to other side of call

The dtmfDialer definitely does something during a call and I think i can hear some suppressed clicking when attempting to send a dtmfDialer tone during a phone call but sadly no audible tones. This possibly confirms my theory that the PHONE CALL SOFTWARE is blocking use of the speaker.

Well what do you all think? Possibly an awesome fix to many problems if the phone dialer can be hacked...

[vijay555]

Saint, with regard to recording calls, there are other threads on this issue where much better men than I have said it's impossible, at least right now.
As I understand it, there's no direct connection between the phone and the pda bit, so playing something out of the speaker isn't playing it down the line - so the best we've got is "emission" rather then send.
This isn't a limitation by the caller program, it's a hardware limitation caused by the way our PDA phones are hacked together.

However, I think the AT P commands should crack this. I'll look into it at some point, if I can find example code.

V

[vijay555]

Saint, with regard to recording calls, there are other threads on this issue where much better men than I have said it's impossible, at least right now.
As I understand it, there's no direct connection between the phone and the pda bit, so playing something out of the speaker isn't playing it down the line - so the best we've got is "emission" rather then send.
This isn't a limitation by the caller program, it's a hardware limitation caused by the way our PDA phones are hacked together.

However, I think the AT P commands should crack this. I'll look into it at some point, if I can find example code.

V

[clach04]

you should be aware that our PDA Phones are actually two semi-independant devices, phone and PDA;

....

The two devices communicate through a virtual COM port:- this is done through AT commands and/or RIL.

..

clach04 - Do you have any further thoughts on this?


Not really, my comments about how easy it would be to extend dialDTMF were from the dialDTMF contacts plugin perspective. It sounds like the SDK/api for these devices (for phone use) is pretty thin :-( If you do find that a modem AT style dial works you can replace the dtmf player in dialDTMF with a dial-string generator - the hard bit will be the interface to the phone. The dialing rules library I put into dialDTMF actually has a demo program that dumps dial strings to stdout (when ran on the desktop) - but until the phone api is resolved that is only midly interesting/useful now.

The AT style dial string approach sounds workable from the description.


DO you have any advice for me (links, tools, etc) if I were to try and achieve this myself?


That's one of those open ended questions that are really tricky to answer, I suspect this forum you are on is the best place to start as I suspect they have links to everything you will need:

You need a Cross compiler for WinCE:
http://www.microsoft.com/downloads/details.aspx?familyid=1DACDB3D-50D1-41B2-A107-FA75AE960856&displaylang=en

I guess youwill need a phone sdk:

http://www.microsoft.com/downloads/details.aspx?FamilyId=A6C4F799-EC5C-427C-807C-4C0F96765A81&displaylang=en

I'm not clear from reading the comments that this is for your device though..
.

If you nead to learn C then your learning curve will be pretty steep, try http://www.cyberdiem.com/vin/learn.html as a starting point

http://www.cs.virginia.edu/~lcc-win32/ is a nice small system and has tutorials to get you started with simple desktop programs

As for the actual phone SDK/api - I've no idea (and no phone) sorry I can't be of more help. Once the basic how to send DTMF's through the phone is solved converting dialDTMF will be pretty straight forward and I can point people in the right direction with that,

Chris

[vijay555]

clach - I agree it should be very easy to converter over your DTMF code to AT or equivalent once someone hacks in AT commands.

General:
see here:
http://forum.xda-developers.com/viewtopic.php?t=19866&highlight=commands

There's code here: http://forum.xda-developers.com/viewtopic.php?t=3347&postdays=0&postorder=asc&start=25&sid=3e4fdf4cec07bfe39e806da375db69c3
that I'm going to look into for CellID at some point. However, if you look through you can see how they're sending standard AT commands.

Hope that points someone somewhere!

Re: learning c++. I've only been using it for < 1 month, and it is a steep learning curve, but there are some things that can only be done in C++ and EVB isn't worth touching generally IMHO. So, steep learning curve it is. I'll be on the beach with C++ for Dummies :wink:

V

[Ashlion]

Something fun

1, Phone captures the UPC barcode/ISBN number (manually/scanning/etc)
2, Software converts UPC to ISBN (this is done via a simple formula)
3, Software converts ISBN to DTMF (or touch tone)
4, Software ready to accept new UPC barcode/ISBN number
(manually/scanning/etc) :roll:

Let me know if anyone wants to take on this project
Ashenaffi@hotmail.com

[pmmcls]

I got this from google - it may be the key. I've not looked into it yet but thought I'd post it to see if anyone has gone down the RIL road yet and if they've got any ideas:

"
how to send DTMF on smartphone?
I found RIL_SendDTMF function of RIL API
but I don't know how to use it?


May I LoadLibrary of RILGSM.dll and GetProcAddress of RIL_SendDTMF function
to realize send DTMF?


or have another simply method?
Thanks£¡
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Siber Oct 19, 4:13 am show options
Newsgroups: microsoft.public.pocketpc.developer
From: "Siber" <robof...@vip.sina.com> - Find messages by this author
Date: Wed, 19 Oct 2005 12:13:21 +0800
Local: Wed, Oct 19 2005 4:13 am
Subject: Re: how to send DTMF on smartphone?
Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse

I Got iT
lineGenerateDigits()
"

Anyone using C# to use this?

Pat

[pmmcls]

FYI:
RILGSM.dll can also be known as RIL.dll