With the rapid evolution of technology witnessed in the mobile communications market, many of these operators are now looking at how to evolve their networks from the legacy Time Division Multiplex (TDM) technology to the next generation all-IP packet based voice networks. As the leading provider of GSM-R networks globally, Kapsch CarrierCom has been introducing its next generation IP voice network solution based on the 3GPP Release 4 standards.

The new R4 architecture allows an enhanced flexibility in deployment, simplicity in operation along with an outstanding level of redundancy which fully meets the high expectation in reliability and feature readiness required by railway operators.

The existing GSM-R requirements are supplemented by special services, such as ASCI (Advanced Speech Call Items)

• eMLPP (enhanced Multi-Level Precedence and Preemption) repression and prioritization of calls
• VBS (Voice Broadcast Services) in order to deliver voice information to a group of subscribers simultaneously
• VGCS (Voice Group Call Service) groups of subscribers can talk among each other and to each other

as well as railway-specific services:

• FA (Functional Addressing) and Presentation of Functional Numbers in order to reach the train driver under the train number and to display it
• AM (Access Matrix) to organize access to groups or subscribers, e.g. subscribers of group A must not call subscribers of group B.
• LDA (Location Dependent Addressing) facilitates controlling the caller depending on his location or region.

For further information download our GSM-R product folder: Product Folder GSM-R  -  4,4 KB