Hi, new member

[Victor]

Hello everybody, I'm Victor, from Buenos Aires, Argentina (South
America)

I found David's site looking for ideas on how to build an USB FXO
port.
I'm very new to Trixbox, and I'ld like to run one at home. The fact is
Digium cards prices................
I work on an Avaya Business Partner, so I really know how expensive
VoIP can be!!!!!!

Also, I'm on fifth year of University (Electronic Engineer student),
and I'm forced to make a working USB project.

I was thinking on a very small USB "pen drive", with a PIC18Fxxx
driving USB port and also making some very simple G.711 compression,
but I noticed the need of a high quality hybrid circuit..., Si3050 +
3019 (very difficult to get here). Another problem will be to write
the Linux drivers for the new device, but I think I can get help on
that.

Well, this post was to introduce myself, I'll be posting sooner. I
accept any ideas!!!.

Victor

[David Rowe]

Hi Victor,

Welcome :-)

> I found David's site looking for ideas on how to build an USB FXO
> port.
> I'm very new to Trixbox, and I'ld like to run one at home. The fact is
> Digium cards prices................

Well you can use a low cost X100P (works well with the Oslec echo
canceller).

> Also, I'm on fifth year of University (Electronic Engineer student),
> and I'm forced to make a working USB project.
>
> I was thinking on a very small USB "pen drive", with a PIC18Fxxx
> driving USB port and also making some very simple G.711 compression,
> but I noticed the need of a high quality hybrid circuit

Sounds like a good match to our project, and help with the Linux driver
side would be welcome. It might be possible to modify the existing
Zaptel USB handset driver for our project.

Cheers,

David

[Carlos Barriquello]

Victor,

take a look here:http://www.tjnet.com/chips/tiger580.htm

This chip has a USB interface, audio codec (G711 I believe), a SLIC
interface and is based on a 8051 MCU.
Also they have a library to help developing Linux driver (http://
www.tjnet.com/software/download/voip_drv_app/tjdemo-0.2.tar.gz)

Maybe this could help you out.

By the way, I am also a fifth year Electrical Engineering student (but
I am from Brazil).

Good luck in your project!