16 Jan
2018
16 Jan
'18
3:59 p.m.
Silvertel makes POTS line interfaces (SLICs) that work on 3.3v or 5v
supplies. They do all the high voltage generation and impedance wizardry on
the POTS side, then expose audio in/out and simple control lines.
To complete the picture you'd have to generate the tones and decode the
numbers but that's it I'm guessing.
Practical? No. Awesome? Yes.
=]
On Tue, Jan 16, 2018 at 6:53 PM Grant Taylor via cctalk <
cctalk at classiccmp.org> wrote:
On 01/16/2018 04:46 PM, Ali wrote:
--
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
You can pick up a cheap Chinese analog 8 port PBX
on ePay for about
$60. It will create dial tone, ring, etc. and allow you to call from
"extension" to "extension" so you can even dial in and get a
handshake
tone. The only issue is that I don't believe they can be daisy chained
so eight ports is your max and there is no way to connect one site to
another (short of running very long wires).
I would expect that such PBXs have a way to receiving incoming analog
lines. As such, I would expect that you could take an FXO (station)
port on one PBX and connect it to the FXS (CO) port on the other PBX,
and vice versa.
My brain stalls ever time I say FXS vs FXO and I have to verify what I'm
saying. - Here's an old but IMHO good reference from Digium.
Link - What are FXS and FXO?
- https://my.digium.com/en/docs/misc/fxs_fxo_desc/
--
Grant. . . .
unix || die