Voice over Packet: NGN Call Connection Agent Generic Requirements
Document Number GR-3051
Issue Number 02
Issue Date Apr 2001
Components of this product are:
ABSTRACT: Issue 2 of GR-3051,Voice over Packet: NGN Call Connection Agent Generic Requirements, replaces Issue 1.
GR-3051 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. This GR document specifies Call Connection Agent Interactions and interfaces with other
network elements within the Voice over Packet network. It describes call and connection control functions of the Call Connection Agent
in conjunction with these network elements. The Call Connection Agent generic requirements integrate emerging standards, creating
end-to-end capabilities that span PSTN/ISDN, SS7, Internet Protocol, Asynchronous Transfer Mode (ATM), and other emerging packet
Issue 2 of GR-3051 further aligns with standards and also adds support for Fax relay, Fax Store and Forward, Customer Gateways and
Network Mediation Gateways.
SR-4717 is a related Special Report that explains the essential elements needed to build VoP networks and 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.
When using GR-3051, you will need to refer to GR-253, GR-268, GR-317, GR-394, TR-NWT-000444, GR-474,
GR-477, GR-506, GR-892, TR-NWT-001281, GR-2941, GR-3058, and several IETF RFCs and ITU-T Recommendations. You
may need to refer to GR-199, GR-246, GR-820, TR-TSY-000824, TR-TSY-000821, TR-TSY-000825, TR-TSY-000847,
TR-NWT-001112, and/or TR-NWT-001268.
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