asterisk users - Oct 2006 - Anyone got a dialplan for SPA ATAs for ISN?

After John Todd's talk at Astricon about the ISN project, I spent much 
of the weekend playing around with it.

I have discovered that the default dialplans on my Sipura gear, as well 
as my Grandstream phones, intercept the "*" key that is a required
part
of ISN numbers and interpret it as a "metacharacter."

Googling for a while has turned up evidence that this can be corrected 
by a carefully-crafted "dialplan" for the Sipuras, at least, but the 
avaialable documentation is, let's say, a little convoluted.

I'm wondering if anyone on the list has cracked this, and would be 
willing to share the gobbledygook string needed to effect the proper 
behavior.

Thanks.

B.

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> Googling for a while has turned up evidence that this can be corrected 
> by a carefully-crafted "dialplan" for the Sipuras, at least, but
the
> avaialable documentation is, let's say, a little convoluted.
> 
Try this on Sipura
(*x.*x.)

Seemed to work for me.

Cameron