Arduino Dial Up Modem shield

Other Hardware Product Design
41

I found this thread while looking for a programmable device to make a custom call screener.
The commercial devices I have found are either out of sale or do not meet my needs.

The Conexant reference in this thread lead me to another promising item: USB Modems...

Take a look at the Sewell SW-29644, Hiro H50113, and similar.

They should work with the USB shield (or, heresy, another embedded board).

It will take me a while to try this. Hoping we can help each other make progress.

The Hiro page on Amazon mentions several (MSWin-based) software packages for phone screening and related tasks.

My desire is to have a device that auto-builds a whitelist of callers.
Numbers on the whitelist ring through as normal.
Numbers on the blacklist get disconnected, possibly with a rejection message.
An unknown number will hear a screening message; upon pressing the right number, they will be added to the whitelist and ring the phone.
This should filter out most robocallers and telemarketers.
A web interface (Ethernet?) will allow the user to edit the whitelist, add blacklist entries, etc.
Is something like this already available for Linux?
Should I expect to cobble something together with Asterisk?

42

Has anyone found a simple solution yet (i.e., a MODEM shield that connects to Arduino)?

43

May I ask where you can buy?

44

Necroing this a bit since this is a top search result for finding this kind of functionality. I'd like to add that I have found this board:

which seems to be able to decode dial tones and send dial tones, but doesn't seem as robust as a complete modem shield. In the four years since this thread was started there still doesn't seem to be a simple solution.

Personally, I'd like to be able to interface with my apartment's buzzer system, which works like a local intercom on the phone line.