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16. - 19. 10 2007
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Projects / IP Phone |
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IP Phone – NetPhone 210
Assignment:
The project target was to
develop a middle class, price effective
IP phone working on the H.323 protocol with the option of other VoIP
protocols implementation in the future. The phone was supposed to
include 2x Ethernet, graphic display, G.723 and G.729 codec support. The
total costs were not to exceed 60 thousand EUR, with the development
time shorter than 15 months since the contract signature. Production
price of the telephone was to be lower than 80USD.
Solution: Our HW specialists have made the preliminary analysis of the available chipsets of the platforms that would satisfy the client's requirements. The analysis of the appropriate platforms took cca 4-6 weeks. Based on the analysis foundings, Intel's xSCALE PXA255 platform has been chosen as the most appropriate one since it had acceptable support in OS Linux and since the total costs of the product's BOM file were under the given limit of 80USD. After the acceptation of the selected platform from the side of the client, the development as such began. The development has been proceeding simultaneously - SW (OS, middleware, application itself and GUI) and HW – PCB development, housing development. Within 4 months, the first prototype of the phone including the basic OS based on Linux has been ready. Consequently, the work on the housing, PCB optimalization, and mainly development, testing and SW debugging (the driver for keyboard and display of the phone, codecs G.723 and G.729 have been written and debugged, the implementation of the H.323v4 protocol itself has been done. Furthermore, the application has been written as well as GUI). Another department has been working on the housing design and promo materials writing + certification from the point of view of EMC and CE compatibility. In total, 4 prototypes of the phone has been made in horizon of 12 months. The work on the product has been finished after 14 months, while all the criteria set by the client has been met. The client received production documentation as well as the BOM file and started with the serial production of the IP telephone.
Realization time: (2003-2004) - 14 months.
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