IP Network – To Network Interface (NNI)Standard for VoIP
|Publication Date:||1 May 2006|
SCOPE, PURPOSE, AND APPLICATION
This standard defines the IP Network-to -Network Interface (NNI) for VoIP between carriers. It addresses the need for a standard interface as telecom networks migrate the NNI from TDM circuitswitched to IP. The focus of this standard is to support VoIP. This standard defines:
♦ Interconnection architecture;
♦ SIP call/session control signaling;
♦ Signaling and media transport;
♦ Quality of Service (QoS);
♦ Association between call control and media control; and
♦ Mandatory SIP URIs to be Supported.
There is also an informative annex on items for consideration in SLAs.
The following related topics are not defined in this document:
♦ Call Routing;
♦ Session Border Controller Functions; or
♦ Call Admission Control and Traffic Management.