"Ron Barnett" <ronREMOVE@REMOVERJBarnett.co.uk> wrote in message
news:4541b943.0@entanet...
> Hello All,
>
> I mailed the group a few days ago about problems with Comwave - and got a
> zero response so maybe no-one has used them. - They are a Canadian
> supplier after all.
>
> The hardware I'm trying to get going is a Grandstream Handy Tone-495 and
> these do seem to be useable on any SIP system.
>
> The problem seems to be rooted in the box's ability (or lack of) to access
> a STUN server.
> The box does not detect its NAT position properly and mis-identifies
> itself as being on an open internet connection. I have fooled that
> putting the box in a DMZ which was enough to get it to reload it's
> firmware from Comwave and I can now place calls, but not receive them !
> The box now behaves the same (call out is OK but no receive) either in a
> normal NAT location or in a DMZ
>
> Anyone seen this type of problem before - any thoughts, solutions  ?
>
> TIA,
>
> Ron Barnett
> IT Support for Business
> www.rjbarnett.co.uk
>
> --------------------------------------------------------------------------
---------------
> For labellers and labelling supplies visit www.labelzrus.co.uk

And then I discovered that is works much better if you actually use the
right phone number to call the box.

All OK now

Ron

[ Post a follow-up to this message ]