VoP: NGN Network Mediation Gateway Framework Generic Requirements
Document Number GR-3062
Issue Number 01
Issue Date May 2001
ABSTRACT: Issue 1 of GR-3062, VoP: NGN Network Mediation Gateway Framework Generic Requirements, describes the architecture, interfaces,
and functionality of the Network Mediation Gateway (NMGW) component of a Next Generation Network (NGN). The NMGW is a functional entity
that interfaces with both the Access Network and the NGN Core Network. As such, it controls subscriber access to the NGN, regardless of
the access technology used by the subscribers. It can be a stand-alone device or can be incorporated by a manufacturer into the
functions of another network element. The functions of the NMGW are varied and may include:
- Network protection, i.e., user authorization, address masking, toll fraud prevention, admission control, and traffic
- Aggregation of connections from multiple Customer Gateways (CGWs) for delivery of signaling information to the call connection
- Audible ring generation and network announcements
- Value-added data services, Virtual Private Networks (VPNs), subscriber management and firewalls.
The NMGW may also participate in the mechanism for dynamic bandwidth allocation over the Customer Premises Equipment (CPE) interface
between voice and data applications to ensure the requested quality of service for the connection.
The GR-3062 generic criteria present the architecture, interfaces, and functionality of the NGN Network Mediation Gateway. The
intent is to ensure interoperability of the components within the NGN as well as for interworking with other networks and with Public
Switched Telephone Network (PSTN) user equipment, without constraining the implementation choices available to the manufacturer. These
generic requirements also describe the NMGW interactions with the Customer Gateway as well as the Call Connection Agent (CCA) and
procedures for transporting user information and associated signaling and control information over the core packet network.
When using GR-3062, you may need to refer to GR-507, AF-SIG-0061.000, and several IETF RFCs, AF-SAA-0124.000. You may also want
to refer to GR-3051, GR-3053, GR-3054, GR-3055, GR-3058, GR-3059, GR-3060, GR-3061, GR-3070, and
various ITU-T Recommendations.
Components of this product are:
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