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Home > Archive > Voice Over IP in UK > December 2006 > Grandstream HT-496 - any thoughts?
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Grandstream HT-496 - any thoughts?
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| Ron Barnett 2006-10-27, 7:11 am |
| 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
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| I recently moved from YAK VOIP to comwave because YAK new owner (poor
him) decided to abandan their VOIP service by end of 2006. I had been
using YAK for 2+ years I am very satisfied with their service and
pirce, many friends of mine are YAK customers as well.
The phone adapter (LINKSYS PAP2-NA) I received from YAK could not work
with comwave (no receiving, dial out only), althought I previously was
told that it would be fine for Comwave service Tech guy from comwave
worked with me (another tech guy) for more than 4 hours in remote
control session and did not find a solution. So they decided to send me
another iphone adapter (50$ + 12$ shipping).
Two days later I called home from my office as attempt, it suprised me
that call receiving was working well. (I did not make any
changes/reboot). So I called comwave to stop sending me the new iphone
adapter. But I am not sure this will last forever or just by accident.
Ron Barnett wrote:
> 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
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