Steven wrote:
> Tim wrote:
>> Steven wrote:
>>> The consensus appears to be VoIP isn't quite ready for offices then?
>>
>> Not at all. We use it all day everyday.
>
> Care to expand on that with some information about your setup? :)

We have Snom phones in the office (Mainly 360s, but with some 370s, 320s
and a 300). Also a few Siemens Dect phones to walk around with.

These all connect to an asterisk box (IC talk variety) which is onsite.
Gradwell hold our main incoming number, which they deliver on SIP to
the asterisk box.

We have various outbound providers setup on PBX, set to failover in case
of failure.

On our ADSL line we have a CTX1000 to traffic shape.

Our PBX is on a public IP address, so it is really easy for remote users
to connect to it. Some phones are on public IPs, others are behind NAT.

We have had a SIP based office phone system since December 2002.
Initially we connected to ISDN2 lines in the office, giving us 4 voice
channels. Remote users connected to the office SIP system.

When we got ADSL we started to put out outbound calls down the ADSL into
a SIP provider. This was because the ISDN lines weren't really enough -
we wanted to makesure we never missed an incoming call.

Then we moved offices in October 2006. Initially we left an ISDN
gateway in the old office to deliver calls to the PBX in the new office.
After our number port went through, we cancelled the ISDN lines. This
was partly driven because BT wouldn't allow us to take our number to the
new premises.




Tim Bray