Successfully deploying advanced services such as VoIP on today’s complex multi-vendor, multi-technology networks is a challenge for service providers and their enterprise customers, particularly with automated service activation through portals. A key ingredient in efficiently delivering and assuring VoIP services is accurate network data showing exactly which network devices, cards and ports are involved in a given business VoIP service, enabling service activation with low fallout, and ensuring rapid diagnosis and resolution of faults that are often reported as simply "my phone doesn't work".