I've changed my landline for a SIP based VoIP provider. I have another SIP based VoIP provider for outgoing calls. I can configure my NAT router (Fritzbox 7360 now, 7390 soon, required by my Internet ...
One thought kept running through my mind while I tested the ShoreTel 6 phone system: “This is too easy.” Surely, I thought, there must be a point at which the ShoreTel PBX becomes a pain in the neck.