As the communications industry, the development of communication deep into every aspect of people's lives, users of various telecommunications networks carrying more functional business requirements of emerging more complex; other with IP-based Internet and mobile communications network development in the evolution of triple play, there are many innovative business capabilities. These demands on the existing telecommunications network proposed open telecommunications requirements, driving the development of related technologies. Open Telecommunications put forward on the CTI technology, flexibility and carrier-grade requirements of the combination, CompactPCI architecture came into being. IP-based technology development and CTI technology, and gradually gave birth to the birth of the soft switching technology for carrying all kinds of new media applications under the network environment.
EMSN Switch Goyang Sonus platform is the development of a new generation of park open telecommunications platform, based on softswitch and CompactPCI, with large-capacity, carrier-grade, open, low-cost, on behalf of the industry technology.
A product design goal
* The basic framework, MG, SG, CallServer, MediaServer, application servers.
* To achieve the separation of call and exchange
* IP-based network distributed switching platform
* Support for multiple networking options
* Support a full range of all kinds of CompactPCI Voice Card
* Support for Intel Dialogic, NMS, DJ's full line of voice cards, to meet the requirements of various cost-effective.
* Single-line switching nodes to meet the 2000 exchange capacity and performance
* Intelligent Network concept
* Business and call, exchange separation, provides IVR / IFR automatic and manual operation of the flexible business networking and business support
* To provide the flexibility to customize and expand business.
· CTI and call center support
* Provide all CTI business, complete support
* Provide ACD call queuing and CSTA interfaces built on to meet the Switch CallCenter application.
2EMSN Switch platform logical architecture
Soft-switching and intelligent network reference structure, EMSN Switch platform is divided into three layers:
* Media device processing layer
divided into media gateway (MG) and signaling gateway (SG), direct implementation with a variety of network interfaces, switching and media processing. Also include basic call processing, signaling processing, speech processing, session. Media gateway and signaling gateway includes all kinds of processing board.
* Call service processing layer
key is to realize the EMSN Switch platform, resource management, call control, prefix analysis, routing switches handle basic functions. CTI also provides call processing features, including automatic call distribution (ACD) queuing capabilities available, CSTA interface processing provides call center support, call detail logs, to provide billing address if a single authentication and AAA's processing, database access through agents, provide access to more types of data sources.
* Voice service processing layer
mainly to provide interactive voice response (IVR) and Interactive Fax Response (IFR) processing, automated voice services, business process analysis and run.
· RTCS bus
Real-time communication between layers using RTCS middleware to communicate, and achieve full network-based distributed computing and applications.
* RTCS bus based distributed processing architecture
* based on soft switching, Intelligent Network multi-layer structure, business, call, exchange separation
* Support most of the telecommunications network signaling and interfaces, easy access to various telecommunications networks.
* distributed processing architecture provides a variety of flexible network formation
* can support Lucent, Huawei, Avaya and other exchange platforms
* support for Intel Dialogic, NMS, DJ and other voice grade card, support for CompactPCI / PCI / ISA cards and other types of voice, to meet the requirements of different cost
* CSTA call center provides a standard interface, ease of expansion of complex voice services
* high-speed queue, load sharing, multi-threaded mechanism to ensure high-capacity processing capability and speed.
* provide integrated monitoring system, monitoring system, maintenance easy
* device based on programmable flow engine, handling, call handling, IVR processing, easy to extend and modify
* to provide process development tools, to meet on the call processing, IVR processing the secondary development of multiple levels of customization
* provide RTCS application package, to provide application systems, Gateway's rapid development and interconnection of heterogeneous systems.
4 business applications described
EMSN Switch platform supports a variety of telecommunication network-based voice value-added services can also be combined with the IP data network to provide various types of integrated value-added services. Typical activities are as follows:
* Call calling card business and wholesale services, such as 200,300 and the IP call, etc.;
* Auto / manual voice services, such as 160,168, etc.;
* personalized ringback service
* conferencing services, voice services QQ
* customer service system all industries, such as 1000,1001, etc.;
* virtual call center business
* Telephone E-Commerce (lottery betting, securities commission trade, payment of pay the ... ...)
5 EMSN Switch network scheme
* Independent node program
This network option is the most traditional and widely CTI network formation. While each node in the operational independence of the media gateway the call server and IVR server, media gateway are mutually independent, there is no data exchange and interaction.
This networking program called for more independent of each call of business, independent network of distributed load-effective solution to the issue of sharing and mutual backup.
200 platform on a wide range of traditional use of this program. Personalized ringback system suited to this program.
* Multi-node programs focus
This program is a LAN network, each node in a distributed media gateways, and centralized way to set up the call server and the IVR server to focus on call handling and business processing. Between the media gateway is not independent of each other, can exchange and data interaction. Switching relay interfaces can also be used by way of IP. Centralized call handling and IVR server can provide centralized management and services, while increasing the call server and IVR server processing power.
This program used to implement complex call center applications, voice QQ applications, interactive applications, meeting the need for bridging the business.
* Distributed Internet programs
This networking program for the provincial or national network, the various subsystems to a different location, and has a complete section of the media gateway, the call server and IVR server, can be the region's call processing and business processing. Between subsystems be interconnected through the IP WAN, voice and data interaction and switching. The whole network-based Internet applications with center business applications for full network.
This program used for complex applications to achieve the whole network, need a lot of unique localization of applications.
If the current provincial 160/168 system used this approach.
* Focus on, distributed access scheme
This networking program for the provincial or national network, the various subsystems media gateway, located in different locations, easy access to the network. Then through the IP wide area network connectivity, voice and data interaction and switching. System Settings in the center centralized call servers and many centralized IVR server, network-wide business services. This use of the whole network-based business applications, while the need for centralized management and services.
* Exchange of performance
System capacity: modular design, you can smooth expansion, including:
* Single-node exchange capacity: 2000 Road
* Maximum 1000 nodes, the maximum capacity of 64000 Road.
* Single-node BHCA: 12k / h
* Single CallServer Capacity: 80 calls / sec / 10000TPMC
* Single IVRServer capacity; 80 calls / sec / 10000TPMC
* Transmission index
* Full compliance with "the Ministry of Posts and Telecommunications telephone switching equipment the total technical specification (GF002-9002.1)"
* Signaling System
* ISDN SS1
* China No1
* On the 7th signaling TUP, ISUP
* VOIP: H.323, SIP,
* Subscriber line signaling.
* Analog line
* IVR performance
* Users access a tone less than 1 second.
* Offers a variety of language functions.
* Can be digital synthesis, synthesis of 100% accuracy.
* No. received 99.9% accuracy rate.
* Compatibility Index
* Voice card device support
Intel Dialogic, NMS, DJ full line of PCI / CompactPCI voice card.