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The Converged Network Framework

Overview

The CSP enables developers to move existing and new applications into the next generation converged network framework. It provides a feature-rich, multi-protocol, multi-functional platform with proven Internet Protocol (IP) and Public Switched Telephone Network (PSTN) capabilities.

Two Types of Protocols

The CSP supports two types of signaling protocols:

• Session: Includes Session-Initiation Protocol (SIP) User Agent and H.323

• Transport: Includes Real-Time Protocol/Real-Time Control Protocol (RTP/RTCP)

SIP

SIP allows the CSP to act as an IP Service Node, providing application services and media resources to a softswitch or SIP proxy server. A softswitch or SIP proxy server uses SIP to hand off a call requiring call treatment with partner-developed applications resident on the host. The SIP software is embedded in the CSP Matrix Series 3 Card and interacts with host applications the same way that other Layer 3 circuit-based protocols do, such as SS7 ISUP and ISDN.

H.323

The H.323 protocol is used for multimedia conferencing over packet networks. H.323 allows multimedia communication devices to interoperate regardless of the type of connection devices on the network.

The H.323 is embedded in the IP Signaling Series 3 card. The H.323 offering on the CSP provides both signaling and media capability, so application developers do not need to add these features separately.

RTP/RTCP

RTP and RTCP streams are transported to the media gateways using the VDAC-ONE card.

Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.
Public Switched Telephone Network
Session-Initiation Protocol. A signaling protocol used for establishing sessions in an IP network. A session could be a simple, two-way telephone call, or it could be a collaborative multi-media conference session.
ITU-T standard defines a set of call control, channel setup, and codec specifications for transmitting real-time voice and video over networks that do not offer guaranteed service or quality of service.
Real-Time Transport Protocol. Supports transport of real-time data like interactive voice and video over packet-switched networks.
Real-Time Transport Control Protocol.
Protocol layer of the CSP.
See Signaling System Number Seven.
See Integrated Services Digital Network User Part.
See Integrated Services Digital Network.