Sintesio profile

Activities

Within the scope of TISPAN NGN Release 1 network architecture, SINTESIO is primarily focusing in interoperability test for PSTN/ISDN Emulation subsystem. Specifically, the SINTESIO’s primary focus is to carry out interoperability tests between signalling platforms that interoperate by means of signalling protocols (SIP, SIP-I, H.323, SIGTRAN), and between signalling platforms and bearer platforms.

In particular, there are several possible inter-working functions between network elements of TISPAN NGN network, TISPAN PSTN/ISDN simulated and emulation access, Legacy NGN networks, which inter-communicate by means of ISUP, DSS1, SIGTRAN, H.323, SIP and SIP-I signalling. As a result, it makes the formal interoperability testing a relatively difficult task. Interoperability scenarios may include, but are not limited to: 

• NGN emulation scenario: Legacy class 4 and class 5 switches are replaced by NGN Core, while preserving Legacy PSTN/ISDN terminals. This migration scenario provides end users the same services as with PSTN/ISDN core nwetwork. 
• NGN simulation scenario: legacy networks are replaced with an IP-based architecture, where class 5 and class 4 switches are replaced by call servers and media gateways. Moreover, legacy terminals and access networks are also replaced with IP-based equipment. This scenario provides similar services to many of the PSTN/ISDN services.
• Interworking between NGN Core and PSTN/ISDN networks: With this type of scenarios, interworking is taking place between NGN terminals connected to the  infrastructure and legacy terminals connected to the same infrastructure or to the PSTN/ISDN. 
• Interworking between NGN Core and other SDO NGN networks: With this type of scenarios, interworking is taking place between NGN Core and other NGN infrastructure, that may be defined by other standard deliver organizations (e.g. IETF ).

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