Neil Jarman wrote:
> Hi,
>
> We're looking to go VOIP internally and I need advice.
>
> We currently have 8 external lines, 30 extensions.
>
> What should I be looking for if I want to get VOIP, and install it myself?
>
> Whats the best hardware, and what do I need from BT? I assume upgrading to
> ISDN30 is the right thing?
>
> Any advice appreciated.
>
> Cheers,
>
> NEIL
If you want to use VoIP with that number of phones you probably want to
be looking at an SDL line which will give you equal amounts of upstream
capacity as downstream.
You should look at Voipfone's PBX service, 30 extensions would cost
£30 p/m with all the bells and whistles like
transfer/voicemail/conferencing etc.
https://www.voipfone.co.uk/PB_Virtual_PBX.php
On the hardware side you will need a decent internal network - pretty
cheap these days - and good IP phones; the Snom 190 is very hard to
beat, tho on the expensive side. For a little less you could look at
the Sipura 841 but don't get anything cheaper, the build quality is
poor.
Office System advice required 
Linear Mode
