I am assembling the parts and theory of operation for a typical radio broadcasting station studio-transmitter link, to replace the current analog system with a digital one. I know I could do it with some packet-switched TCP/IP, but I already have some ISDN PRI T1 microwave licensed bearers, and I’d like to use those, and I think circuit-switched carrier-class links will be superior.
I have a couple of options, it seems ;
1.) TCP/IP over T1 ISDN and then run multi-channel Opus trx inside this 1.5mbit circuit.
2.) MUX multiple BRI Codecs onto the T1 using hardware and deMUX it at the transmitter site.
Can anyone direct me to a case study, an example system, or other reading material on this?
I did see LCR. http://linux-call-router.de/features.html
Any other comments welcome.