On Tue, 25 Jul 2006 22:49:12 +0100, Jono
<nothanks@notonyournelly.blueyonder.com.co.uk> wrote:

>Steve in Herts formulated the question :
>
>>
>> Hi,
>>
>> I'm not using a router, My Grandstream ATA is connected directly to
>> my cable modem,
>>
>> What is "DMZ" out of interest?
>>
>> Cheers
>>
>> Steve
>
>Your ATA has a router built in <http://www.grandstream.com/y-ht486.htm>
>
>DMZ is "De-militarized Zone". In your case, no use looking at DMZ as
>your ATA is already in the best position in your network.
>
>Have you tried any alternative service providers? If you set yourself
>up with a well known free provider, you could establish (for the most
>part) where your problem may lie - ring a freephone number to check
>outbound & call yourself on the geo number to test inbound.


Hello,

Yes, as an experiment, I tried using voipcheap with my ATA and I was
able to place an outgoing call successfully. With voip.co.uk I can
only receive calls. When I make an outgoing call with voip.co.uk, the
connection drops almost immediately as soon as the perosn being called
answers their phone, every time without exception so far.

After 10 days from signing up, I am still trying to get them to sort
out this problem and they have yet to offer a solution (if one
exists).

Steve