Request for Circuit on GSM Dialer

I've been working on an alarm system and needs a circuit for a GSM Dialer which can be coupled to the alarm system. The GSM Dialer when triggered by the alarm system, automatically dials and calls and sends an SMS to a pre programmed. Can anybody help me out by sending me a schematic diagram of the GSM Dialer?

The triggered output of the alarm system is + 12 Volts and can supply current by as much as 2 amperes.

If you look up back issues of EPE magazine they have recently done just such a project, using a specific model (or models) of Nokia phone.

Nigel/Butch,

Does EPE Magazine have any online link? I don't subscribe to EPE Mags and I don't think their publications reach as far here in the Phillipines.

Anyways, thanks for your tip and reply.

You can subscribe to an online edition, just google for 'epe magazine'.