asterisk users - Jul 2005 - grandstream budget tone 100 ip-phone just one call

when i configure the phone whit stun server
stun.xten.com<http://stun.xten.com>the phone works verry well,
but when i reboot the phone not work anymore, the only way is change public 
ip-address of router.

how i can fix.

thanks.


-- 
David Romero
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