Making a dialer with recording capabilities

Adesso

Hey all.

I have decided to make a dialer for the world using simple tools to enable anybody to make calls via a internal/external modem and have the facility to record that call for whatever reason they deam fit...

The tools in question are : Linux running Apache and PHP.

I am rather well versed in PHP and Apache and AT command is also no problem for me. What I don't know yet, is how to get PHP to talk to the modem.

Where I am at right now:

Server is running PHP and the modem is installed and working. I use FC3 with Apache2 and PHP 5.

To test the modem I used minicom and the serial conf is set to /dev/modem that sim links to /dev/ttySHSF0 and do a ATZ followed by a ATDT 123456 and I hear the modem dialing ..

When IO try to do the same in PHP ... Permission is denied.

Apache runs as user apache and group admin, yet the device has permission for user root and group uucp, 241 and this is where I fall out of the bus.... WTF

I don't have any group by that name ?

Can someone shed some light on this new udev thing and how I might get PHP to open the port... ? {I use a normal fopen / fwrite / fclose to utelize the device}

Hope that that is enough for now...

Adesso

Permission thing sorted out ...
Adding the line

ttySHSF0:root:admin:0660

to the file /etc/udev/permissions.d/50-udev.permissions enables fopen to open the port.
Quote:
Apache runs as user apache and group admin

In the dev dir the sym link is still root:root but the actual device ttySHSF0 is now root:admin 241,

Still not sure what this 241 thing is but for now I am happy..

Adesso

Nw the next thing is to get the recording going... Here I am stumpd.. anybody have any idea how to do this.. ?

AstroTeg

Looking around, it appears you may need to treat the recording apsect of this project as recording from a sound card. I'm not a Linux expert, but you'll probably want to check if your modem can be setup to look like a sound card on your system.

If you can do that, you have a fighting chance using Java and several of its APIs. I'm not 100% sold PHP will be able to do all of this for you. You've got one of the hard parts out of the way - persuading the modem to execute the Hayes command set. But capturing the sound is probably a bit more involved and will probably require lower-level coding access. Its possible you might find a stand-alone app that will do what you need and you can integrate that into PHP via system calls. But I have a funny feeling that to make this work, something has talk to the modem on an address and interrupt level, which I don't think PHP was really meant to do.

You might try some generic searches on the 'net to see how others are choosing to interact with the voice capabilities of a modem. It may spark some ideas on how the process works and how it could be converted over to work with PHP.

Adesso

AstroTeg

Not to shoot you down or anything, but currently the comapny has a working version with PHP, the problem is that the code has been encrypted and thus i can improve or fix the program. The Author is also not too clued up on coding and takes weeks to solve simple problems... thus the reason why I am re-doing this.. open-source...

I am 100% convinced that this can work with PHP, just have to figure it out..

Thanks for the input though

AstroTeg

I'd hope I never said it was impossible. But not easy either. Congrats go out to the guy that did get it to work in PHP.

Good luck!