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ROADMAP-TO-NGN-1
Roadmap to NGN Documents Issue 2, August 2008
Your Roadmap to NGN Documents
3–2
SR-NOTES-SERIES-09, Telcordia Notes on CPE for Next Generation
Network Access
SR-NOTES-SERIES-11, Telcordia Notes on IP Centrex.
3.2 NGN Generic Requirements (GR) Documents
This section lists all the Telcordia Generic Requirements (GR) documents related
to NGN. A Document Abstract and an abridged Table of Contents for each
document is provided. For the user’s convenience, all the GR documents listed in
this section are available individually or as a complete set. The set ordering number
is FR-NGN-01, NGN Family of Requirements.
GR-3051-CORE, Voice over Packet: NGN Call Connection Agent Generic
Requirements
Today's Public Switched Telephone Network (PSTN) is engineered to efficiently
transport voice traffic and services. However, the volume of data traffic (e.g.,
Internet traffic) carried by the PSTN is growing rapidly, and soon it will exceed the
volume of voice traffic. This suggests that, going forward, it will be more efficient
to engineer and operate networks optimized to handle data traffic. Packet-based
transport and switching technologies are logical choices for such networks. In other
words, voice traffic should be packetized and handled like data in the future. As
data traffic continues to grow, users of network services are increasingly seeking
value-added, multi-faceted communications capabilities such as unified messaging
and complete service/terminal mobility. Users are also seeking higher
communications bandwidths and greater control over that bandwidth. A Voice over
Packet (VoP) network is envisioned as the first evolutionary step in satisfying these
demands, while enabling new services and revenue streams to network providers,
and potentially reducing the management costs and time to market. SR-4717, Voice
Over Packet in Next Generation Networks: An Architectural Framework, provides
a comprehensive framework for the support of voice and other narrowband
services over packet-based networks. Such support includes traditional access
methods, signaling interfaces, call processing, vertical services, and accounting.
Moreover, these functions are distributed across the following functional entities:
Trunk/Access Gateways, Signaling Gateways, Call Connection Agents, Service
Agents, and Billing Agents. GR-3051-CORE provides the Telcordia view of
proposed generic requirements and objectives for a Call Connection Agent. In
general, these requirements can be divided into four groups: interface requirements,
connection control requirements, call processing requirements, and management
and operations requirements. These requirements also align with standards and
also adds support for Fax relay, Fax Store and Forward, Customer Gateways, and
Network Mediation Gateways.