PoC - Push to talk over Cellular


The PoC project illustrates adare's capabilities to help a customer in analysing market opportunities and associated test product requirements in an early stage.

The PoC project is a typical example for an agile R&D approach which immediately starts with R&D prototyping and is not limited to the usual paper work analysis. This is preferably applied in an IP-related environment, where rapid prototyping is encouraged by the availability of base tools and open standards.

PoC services have already reached significant market success mainly in North America. Today, these services represent incompatible implementations from different vendors. The Open Mobile Alliance (OMA) has recognised the need for PoC mobile interoperability and is progressing PoC standards including corresponding test cases to prove conformance to standards.

The objectives of the PoC project were manifold and included:


PoC proved to be a challenging mobile application which owns even four major functional aspects.

The table indicates these four functional aspects and the related technical concepts & protocols that are applied in the recently released PoC standard.

The technical concepts comprise of:

Pre-standard PoC implementations deviate from these technical concepts more or less depending on the actual supplier approach. OMA compliant implementations are expected in early 2006.

The major achievement of the customer project has been the implementation of a OMA-standard compliant test demonstration which can be used in conjunction with mobile handset prototypes.

Tools & Technologies

The test demo system has been implemented in Java using Eclipse IDE and JRE. The JAIN API is applied as interface between the SIP protocol stack and actual test application. In a final step the SW and GUI of the test demo were integrated into a specific customer product environment.