Are there any sample configurations available for replacing the BT business hub with a router such as a Cisco ISR 4K or ISR 1100? Primarily the WAN link.
The downside is that BT Business don't support setup or management of Cisco routers (not even their chargeable IT specialist desk) so it would need to be someone with Cisco expereince or a Cisco engineer who takes a look at this for you. Hopefully someone on the forum can give you a hand with this.
I am a Cisco engineer, as it happens! What I'm missing right now is the basic info on how the connection needs to be configured, and with that I'd be off to the races (probably;-). And yes, I understand this would be a non-supported configuration.