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The Peering or Network-Network Interface (NNI) refers to the service control interface between two or more IP networks.
acting as a peering
connects these IP networks (carriers, sub-networks, long distance networks, etc.) providing extensive routing capabilities and resource management.
An
in in this configuration is also referred to as a Trunking
(T-). In . In NNI deployment the call model does not support registration, refreshes etc. It supports only SIP calls conforming to a highly scalable model. The
in peering deployment includes the following characteristics:
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| 0 | Figure |
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| 1 | Peering (NNI) deployments |
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| Note |
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| This diagram does not reflect that each network in an NNI deployment can have multiple s ( or 3rd-party s) at the border. |
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