The market drivers that are having a positive effect on the SIP trunking services and VoIP access market of North America along with technology trends related to SIP trunking services and VoIP access are identified to be the advanced on-site UC (unified communication) platforms. This includes Cisco Unified Call Manager and Microsoft Skype for Business, which are already augmented for SIP trunking instead of legacy communication services. This has become a substantial element, which is attracting businesses towards the service. Similarly, feature-rich value-added services at a competitive pricing have encouraged consumers to switch to voice services based on IP. On the other hand, inert migration tactics at the end of some providers and the intrusion of substitute services, for instance, persuasive UC services based on cloud, have been identified as the factors that are holding back the market to reach its maximum potential.