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VoIP Interconnection over the Public Internet (ATIS-1000100)

This Technical Report describes a profile for Voice over IP (VoIP) Service Providers (SPs) who choose to interconnect over the public Internet. It recommends mechanisms for establishing Internet Protocol (IP) connectivity, securing the signaling and media, and proposing bilateral agreements with respect to codec selection to address Quality of Service (QoS) impacts as well as resources for real-time media traversing the unmanaged public Internet.

The report does not describe the Session Initiation Protocol (SIP) call control signaling interworking procedures between interconnected VoIP SPs. The scope is limited to IP transport aspects only. Furthermore, automation
regarding network discovery, including points of interconnection and telephone number ranges exchanged, is out  Decemberof scope of this document.

Published December 12, 2022.