[Asterisk-Users] Sayson 480i Fails to Re-register?

[Trevor Peirce]

George Pajari wrote:

> It appears
> that every so often the Sayson does not send out another REGISTER
> message after the registration has expired resulting in the reverse
> mapping being closed and the phone made unreachable.
>
Even behind regular home Linksys router that doesn't close the mapping 
the Aastra's attached to our network seemingly randomly stop registering 
and say "No Service" on the screen.  No other devices we're using have 
this problem..