I don't know of any way to do this (maybe with a jailbroken iPhone)
For SMS the iPhone beeps again after 5 and then 20 (or 10?) minutes.

And there's a Yahoo Group for iPhones:
apple-iphone@yahoogroups.com

Am 16.07.2010 um 15:43 schrieb "Dr. John A. Allocca" :

> Before my iPhone, I had a blackberry. It would flash to let me know that I
> had voicemail.
>
> With the iPhone, it only beeps once.
>
> I searched but couldn't find an app that will make it keep beeping, such as
> once a minute.
>
> Does anyone know of any way to make it keep beeping to let one know there is
> a voicemail?
>
> John
>
> =======================================
> John A. Allocca, D.Sc., Ph.D.
> Medical Research Scientist
> Allocca Biotechnology, LLC
> 19 Lorraine Court, Northport, NY 11768
> (631) 757-3919
> john@allocca.com
> www.allocca.com
>
> [Non-text portions of this message have been removed]
>
>

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