How is Centrex IP different from other VoIP products?
North America: Centrex IP is line side Centrex services over IP access. Most other VoIP technologies are trunk side IP access into the interexchange carrier networks. Centrex IP brings IP on Ethernet connectivity to the desktop, enabling an enterprise to implement a unified and converged voice and data network. Nortel Centrex IP is not just toll-bypass, but provides the familiar voice quality and reliability of carrier grade networks that customers have come to expect.