edctexas wrote: >A microwave system is great for the handling of a remote receiver >system. Most of the link channels are 4W and do have E&M signalling. > > Hey since 4-wire E&M came up here... I'll ask this question to this list. I've asked various VoIP lists, but haven't had any positive responses yet.
I see tons of cheap 2-wire to Ethernet/SIP/VoIP interface boxes on the market, and I know that higher-end Cisco routers have 4-wire E&M cards available for VoIP, but has anyone seen a cheap single or dual-port 4-wire E&M to VoIP "ATA" device like the 2-wire ones anywhere? I can think of some REALLY useful purposes for radio linking at sites that have TCP/IP connectivity... but you really need those E&M leads to do any type of PTT/COS signaling. I asked a couple of the ATA manufacturers about it and they said, "Not enough interest, but we'll build 10,000 of them if someone wants that many." Darn... not quite there yet... and I don't want to buy an 4-port card and a full Cisco to do the job... too expensive for the applications I'm thinking about. I also need the box to be "dumber" as I just want it to pass the E&M leads and not try to interpret them as anything. Nate WY0X Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/