CP offers services allowing carriers to either send traffic to the origination and termination service provider for termination to the PSTN, or to receive traffic originating from the PSTN. SIP is used as a standard for call control in both instances. Utilizing an origination and termination service can help eliminate what was once a prerequisite to economically providing VoIP-based services.

In working with CP, service providers can preserve capital investment and maintain focus on subscriber acquisition and service deployment by utilizing an origination and termination provider for PSTN interconnection. This lowers the barrier to entry for new service providers, and can lower unified costs for existing PSTN-based service providers. This solution allows for providers to simply cease paying the high costs of PSTN interconnect and switch to the lower cost IP-based origination and termination service.