Re: [44net] hardware vs. software

Thanks John, But that wasn't my question. If you re-read my question, you'll see that the JNOS machines, network, radios, TNCs, etc. already exist. The question was how to deploy the UDR56K-4 in a 56K bridge configuration on a shared subnet to replace the existing 440 radios and TNCs. For example, some other technologies, like Icom's ID-1, only operate in a point-to-point configuration (as far as I know). That's why I asked about the shared subnet. Also, merely speeding up AX.25 to 56kbps isn't going to work unless forward error correction is added. Hence, part of my question was about what protocol would be used. Everything I've read so far, including your answer below, indicates to me that the UDR56K-4 is really an experimenter's platform, and the end solution is left to the user to figure out. In other words, you're providing a linux hardware platform with an integrated 440 radio. That's cool. But if the solution I need is a 56K bridge, it sounds like it's up to me to find a protocol with FEC that is allowed by the FCC, then find the source code, compile it, test it, then somehow connect that to an IP routing or bridging configuration in linux. Am I interpreting the situation correctly? Thanks, Michael N6MEF -----Original Message----- From: 44net-bounces+n6mef=mefox.org(a)hamradio.ucsd.edu [mailto:44net-bounces+n6mef=mefox.org@hamradio.ucsd.edu] On Behalf MIchael, I don't have time right now to test, but JNOS2 compiles from source on the UDR56k-4 as does jnosinstaller. The installer configures the program just fine. Barring any unforeseen issues, you should be able to run JNOS directly on the radio. If you have TNCs servicing local LANs (e.g. 2 meters, 220, ...), you can put USB-to-Serial interfaces on the UDR56k-4 and attach the TNCs with their current radios. No other computer would be required. We have tested TNCs attached in this manner on other applications for over a year (daily). The four UDR56k-4s would form your backbone radios. AX.25 drivers are already in place to drive the UDR56k-4 at any supported speed including 9600-baud to over 56k baud (with some steps in between). You would use a CIDR of /29 if these were the only radios on your backbone LAN. This is an open architure/system so bring your favorite applications (Linux source or Linux ARMEL binaries) to the radio. If your application is more appropriate to run on another computer, use the UDR56k-4 as a relay device, using an IP interface (wired or wireless). Further discussion on the UniversalDigitalRadio forum on Yahoo! Groups.