Hi, I have to use asterisk with some dedicated DSP chips, which will do the expensive G729 CODEC computing, so that the server processor has minimum load. I was informed, I've to use GPAK to implement this. So far I've researched, I've found that, Asterisk uses Dahdi to *talk* to external devices.
Can you please direct me to references/documentations that clarifies, 1. The over all architecture of asterisk with dedicated DSP chips, i.e., how does asterisk integrates with dedicated dsp chips? 2. Whether embedded scenario is a must for such development or is it possible to use asterisk on server and dsp's through some PCI/Ethernet? 3. What could possibly be the build process in such scenario? Tools i.e., cross compilers etc? 4. How do asterisk know, that when a call arrives it has to use a particular DSP chip for Encoding/Decoding? The GPAK user's manual states, The physical layer of communication between the host processor and a G.PAK > DSP is often dependent upon the hardware design. This interface can be via > a host port interface (HPI), shared memory, a PCI bus, Ethernet or any > other fast data pathway. So far I've comprehended from the above quotation, it is possible to use asterisk on a server and DSPs on some remote location (say, not built into the same board where asterisk is running) . Am I correct? Thank you very much for patient reading. -- Sincerely, Sazzad Bin Kamal
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