Thus spaketh RH:
> "Martin Evans" <mcenews@dial.pipex.com> wrote in message
> news:5rjes2h3go31q48cc1glcfinhh2knp651m@4ax.com...
>> Is it possible to connect two IP phones within the same premises in
>> some way so that both can make and receive calls on the same 'line'
>> or does it require additional equipment such as a mini PABX?
>>
>> The phones are a Linksys SPA-921 and a Siemens C460 IP if that has
>> any bearing on the implementation.
>
> I was able to have with my SIPGATE account multiple phones registered
> at the same time,
> not sure if this was a feature or because all phones had the same
> account and same public IP address
> I suspect the latter.
>

With Sipgate you can have the devices the other side of the world and
with the same account details in both, they will both ring when called.
You can both make calls at the same time too. If you dial your own
Sipgate number from the one device it will ring the other.