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Greater network and cost efficiencies Eliminate need for expensive TDM gateways Higher quality of service Reduce voice latency with TDM conversion no longer needed (TDM gateway removed) Increased features and functionality Access to Direct Inward Dialing (DID) capabilities to smaller size customer Seamless calling with Internet-based SIP endpoints End-to-End IP Feature Transparency Opportunity to purchase enhanced applications from service providers Access Technology Agnostic IP PBX to SP: Promotes SIP “Trunking” |