For extra, extra points, the "mail Delivered" incoming call could have a
distinctive ringtone.

(I used a similar system to open my garage door remotely - along with a
dedicated receive phone which would only ring when it recognised the
originating number.  Not working now when CDMA was discontinued and I
needed to replace the phone).

RP


On 14 December 2013 19:12, RussellMc <apptechnz@gmail.com> wrote:

> Cellphone at mailbox
>
> Program phone with 1 key dial facility.
> Add contact across key.
> Add contact across call terminate key.
>
> Mail happens:
>   Contact closure / contact opened
>     Call originated.
> Wait N seconds
> Call terminate
>
> Called phone records a missed call from the mailbox.
>
> For extra points distant phone could also be dedicated to this task, so
> that if it rings, there's mail.
>
> Airtime cost of this will vary with country.
> In NZ a prepay phone's credit typically lasts 12 months and minimum topup
> is AFAIR $20.
> Old phones cost ~=3D $0 each.
> The really chintz could use up the remaining credit on 'real' calls after
> say 11 months
>
> _____________________
>
> HF tx will 'cross' your hill.
> AFAIR there is a ISM band at 134.120 MHz in most countries.
> That will usually give you local terrain independent coverage.
>
>
>   Russell
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