dennis@home wrote:

I'm aware that BT CN21 uses VoIP too.
However its not the cr@p VoIP that you get from SIP servers.
Its based on the stuff I worked on.

I though you worked for GPT/Plessey, not Huawei?

If they go to SIP people will die.

I raised my eyebrows and questioned whether delivery over an ISDN PRI
might be more prudent, this was raised with BT who stated they have more
faith in SIP delivery (over diverse 1GbE circuits) that ISDN

You need rather a lot of stuff to keep working in an emergency when you are
using VoIP, far more than with the telephone system.

Indeed.