Emergency Call Dialer

[albinali]

Hi,

I need some advice about a device that I am building. It is a personal emergency wearable response device that has a button, when pressed an alert signal is sent to a Linux box/base station that is supposed to dial an emergency call center over the landline. The linux box has the speakers + mic that should act as the handset.

I have researched using a standard voice modem and the consensus seems that this would not work. The constraints that I have for this solution include: 1- I can extend the hardware on the base station but nothing too expensive 2- I can have on the backend/call center a more expensive setup.

An early idea that I was contemplating using a modem to do a PPP connection then initiate a phone call. The challenge here is the delay in setting up the connection.

Any suggestions if Asterisk might work would be great particularly with a voice modem, I have little experience in this area. Any recommendations in terms of hardware would also be very helpful.

Thanks!

[david55]

Social alarm dialers are a fairly standard product, I'm not sure why you would want to re-invent the wheel.

Because they are safety of life devices, there tend to be special considerations (e.g. they used reserved radio frequencies to avoid jamming by other short range devices).

I can't see why you should restrict yourself to AsteriskNow, and I think you will attract a more knowledgable audience on the main Asterisk Support forum.

I would note that Asterisk has some social alarm support built in, although I think this is the central station logic for a particular brand of dialer (or dialers in a particular part of the world).