Yes, there are a few products that do this.  The ones I know about are
modules for interfacing with a microcontroller.

https://www.sparkfun.com/products/10138 ADH8066, miniature,
quad-band GSM 850/EGSM 900/DCS 1800/PCS 1900 module.

https://www.sparkfun.com/products/9533 SM5100B, miniature, quad-band
GSM 850/EGSM 900/DCS 1800/PCS 1900 module.

https://www.sparkfun.com/products/9427 evaluation board for the SM5100B=20

I haven't deployed any.  I've always found direct or repeater radio
communication is much cheaper; no SIM card to buy and top up.

A repeater on the mountain?  ;-)

On Fri, Dec 13, 2013 at 03:13:13PM -0800, Brooke Clarke wrote:
> Hi:
>=20
> I live a half mile drive to my rural mailbox and would like to know when =
there's mail in it.
> There's a mountain between my house and the mailbox so direct radio commu=
nication probably will not work.
> Is there a product that would accept a switch closure and place a phone c=
all and deliver a text message using cell phone=20
> technology?
>=20
> --=20
> Have Fun,
>=20
> Brooke Clarke
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
>=20
> --=20
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist

--=20
James Cameron
http://quozl.linux.org.au/
--=20
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View/change your membership options at
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.