softswitch

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softswitch

(1) (Soft-Switch) Earlier software from Soft-Switch, Inc. that converted email messages from one protocol to another using X.400 as a common base. Running on IBM mainframes and Data General minicomputers, Soft-Switch, Inc. became a division of Lotus in 1995. See X.400.

(2) A programmable switch that processes the signaling for packet-based telephony protocols. Also known as a "media gateway controller," "call agent" or "call server," telephony providers use softswitches to integrate PSTN signaling (SS7) with VoIP. Using network processors at its core, softswitches can support IP, DSL, ATM and frame relay transports in the same unit. The softswitch's programmability enables it to adapt to future protocols. See IP telephony, VoIP and SIP.

It Should Be Able To...
According to the International Softswitch Consortium, a softswitch should be able to (1) control connection services for a media gateway and/or native IP endpoints, (2) select processes that can be applied to a call, (3) provide routing for a call within the network based on signaling and customer database information, (4) transfer control of the call to another network element, and (5) interface to and support management functions such as provisioning and billing.


Softswitch Infrastructure
This shows how a softswitch fits into the integrated SS7 and VoIP worlds. (Illustration assistance courtesy of GNP Computers and Pulver.com.)
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References in periodicals archive ?
At the core of the new PrimeTel network will be the SBC 9000 Session Border Controller, Sonus GSX Series Softswitches and the ASX Telephony Feature Server, Sonus said.
According to the company, the solution for KT includes Lucent Feature Server, platform delivering applications such as Hosted PBX, IP Centrex and Voice VPN, as well as the call recording server, presence server, proxy server and location-based server.
At the heart of the SCN, is Pannaway's Call Control Manager (CCM(TM)) which is a SIP registration server, proxy server, feature server and billing mediation platform that routes all calls, provides advanced CLASS features and delivers billing information for the SCN.
Blueface has deployed the Vennetics J-Box Feature Server against its voice network and billing platform so that iPhone users can download the Banter App and create a new pre paid account directly from their handset.
Customers can access 360networks' platform with a single IP connection and feature server. For maximum flexibility, 360networks offers customers an a la carte menu of services such as dedicated IP connectivity, DIDs, CNAM, 911, origination and termination services.
Part of Lucent Technologies Accelerate(TM) Next Generation Communications Solutions portfolio, the solution for KT includes the Lucent Feature Server, the platform delivering applications such as Hosted PBX, IP Centrex and Voice VPN, which combines innovative features with enhanced voice networking capabilities to help KT provide advanced communication services.
Representatives from Flint-based Catalyst Support Services, which specialises in silver ionisation technology; Impact Technologies, of St Asaph, which operates in the media and feature server segment of the voice-over IP telecommunications market; Presteigne-based microwave and printed circuit board manufacturer Labtech; and innovative photo frame developer Lade-Back, of Llangollen, travel to Sydney today for a week before spending a further week in Singapore.
OSN will utilise the NBS9000 to perform session border controller functions for its customers' IP endpoints and as an access session border controller for the feature server that supports SIP calling functionality.
With a single IP connection and feature server, customers can access 360networks' platform and receive an a la carte menu of services that are structured as building blocks to provide customers with the greatest amount of flexibility.
The Sonus components implemented will include the Sonus Insight Element Management System (EMS), Sonus PSX, Sonus GSX9000 media gateway and Network Border Switch, the Sonus ASX Class 5 feature server and Sonus SGX.
Alcatel-Lucent's Feature Server 5000 is the main element of the platform installed for Exatel, providing an IMS-based platform which allows delivery of voice services via various networks and technologies.
The IP network core is said to include the Alcatel-Lucent Network Controller, Alcatel-Lucent Feature Server, and Alcatel-Lucent Universal Gateway.