Hi.

I need some help.  I have a few questions regarding the Ademco contact id
protocol and the hardware I'm planning to use.

I'm using Mitel's MT8880 DTMF transceiver to dial-out and to receive touch
tone commands from telephone.  The Ademco contact ID protocol uses DTMF and
I know the MT8880 will do ok, but I'd love to hear if anybody knows a better
way or device to do the job.

The only other device(s) I think may need are tone decoders for the
Handshake (1400/2300) and kissoff (1400) tones generated by the call center
receiver.  I'm looking at using two LM567's to do this.  Does anybody know
of a device that will work in a dual package?  I'm hoping to save some board
space.

It's been difficult finding technical information about the Contact ID
protocol.  Ademco won't give much detail.  Some engineers at a national call
center did point me to a page with some useful information about the basic
formatting of the protocol.  Any ideas or a pointer to more detailed
information would be greatly appreciated.

Thanks everyone,

Dave
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