From Issue #155March 2007
I didn't think asterisk supported the dsp functions/instructions of blackfin. Which means using blackfin dsp does not help may infact be less efficent as most of the asterisk codec code is geared towards x86 systems.
I have been looking everywhere for information on putting together an embedded telephony card to use to build an adjunct telephone box. Although the Asterisk section is overkill for me, I need the FXS/FXO piece, and to be able to do pass-through.
I'll check into the resources you posted as well. Thanks for being so complete -