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
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