I'm in the process of selecting an appropriate processor and peripheral components for a new design. I'd like to narrow it down to the most cost effective solution. A little background on what the product is since its not a very common product these days. The board is intended to service constant current voice loops used by the fire department of New York. There are emergency call boxes installed throughout the city and users can communicate directly with the fire stations using this.
The board I need will reside in the fire station central exchange office, and interface to the external call box loops. Each board will service 16-24 of these full duplex voice loops and connect these calls to IP connections. There's also some tone detection that we need to handle, so ideally some DSP functionality is required as well. I believe the best approach is to interface these loops to multi-channel AIC codecs, and a processor like the Sitara using the McASP ports. So basically I need a processor that runs Linux, has the horsepower and interface capacity to support 16 to 24 loops and a suitable AIC codec (or codecs) to support this. The processor also has to support Gigabit Ethernet to handle the IP side of the call. Let me know what you recommend as the best solution for the processor and AIC codec. Thanks!
Octavio Amaral
CTO, Celerity Embedded Design Services, LLC.