[msherry]

I remember doing this a few companies ago. Except we didn't have a modem, we just found a phone we could send commands to. It had some user interface that would pop up after every sent message, so we rigged up a terrible little hack to press the acknowledge button every few seconds to dismiss it. It worked surprisingly well :)

Photo of this amazing disruptive device: https://i.imgur.com/6MNb19R.jpg

[jleehey]

Side note to your post, the w800 in your picture was my all time favorite phone. I'm a full time Android developer now and I consider the Java programs I first worked on with the w800 to be the reason behind my interests :)

[therein]

Haha, that's a nice solution. I recently did something like this and the process really makes you dislike the AT command set. If you don't want to take an old GSM phone apart to find its serial pins, a simple USB GSM modem, pretty much any USB GSM modem should be able to expose a /dev/ttyUSB* interface.

[voltagex_]

Older modems are /dev/ttyUSBx or /dev/ttyACM but newer modems might be using the MBIM [1] standard and don't really expose AT interfaces to the user.

1: https://www.kernel.org/doc/Documentation/networking/cdc_mbim...

[noselasd]

MBIM does however expose an SMS and voice interface - if the device supports it. Though I can't see an obvious way to access it with the kernel API.

[agumonkey]

Very geohot of you