Re: Modem to complete Contact ID protocol

[Jim Davis <alarminex@xxxxxxx>]

On Thursday, June 11, 2020 at 4:44:05 PM UTC-4, jasdeep...@xxxxxxxxx wrote:
> Hello,
>=20
> I am looking for a 56k soft modem with a usb interface that could be used=
 to complete contact ID protocol to call a local alarm company. I found tha=
t the CX90240 chip by Conexant has the ability to put the modem into "alarm=
 mode", where the kissoff and handshake tone are detected automatically. I =
have not able to identify a modem using this chip though.
>=20
> I was wondering if anyone has suggestions on where to find this modem or =
how to complete contact ID protocol without this specific chip?
>=20
> I am able to send the DTMF tones, but not sure how to receive the kissoff=
 and handshake tone or what mode to put the modem into using the MS+ AT com=
mand.
>=20
> I appreciate your help greatly.


I would imagine that it is difficult ----- and maybe impossible to find=20

After all, it is certainly something that shouldn't be available to just an=
yone. Central station receivers are pretty exclusive and secure for a reaso=
n Don't you think?