On Wed, Feb 15, 2012 at 6:02 PM, "Jeremy R. Geeo [KDØEAV]"
<kd0eav@gmail.com> wrote:
FYI - This link is working now...
There does appear to be a channel driver that can be dropped into the Asterisk source tree called chan_usrp.
Finally found it in their source tree: trunk/repeater/src/lib/
This driver appears to be a bi-directional UDP interface between Asterisk and a USRP device (or discrimator tap type interface) using GNU Radio. It looks like it is capable of interfacing multiple SDR P25 and/or analog channels into Asterisk. That's a big statement. Assuming some higher horsepower hardware running all of this, it can simultaneously receive (if I'm reading this right, it can actually transceive) multiple P25 (voice/data) streams and FM analog streams (each on a seperate app_rpt channel). The data stream can apparently be sent over to wireshark to be decoded (which also has to be patched).
Haven't tried any of this yet. But with the right hardware, it appears that this would be fully function as a P25 interface (and more) into app_rpt.
73
- Jeremy, KD0EAV