[VoIP] Old DT, Busy & Reorder on 366

[john jones]

Doug,

Is a 4066 some kind of TTL controllable audio switch?

Who make it?

Thanks!

John

----- Original Message ----
From: Doug Alderdice <ka2wft at arrl.net>
To: Voice Over IP Tandem for Analog Switches <voip at lists.ckts.info>
Sent: Saturday, August 18, 2007 10:22:28 AM
Subject: Re: [VoIP] Old DT, Busy & Reorder on 366

At 06:37 AM 8/18/2007 -0700, Max wrote:
>This sounds great!  I noticed that your fast-busy is
>attenuated in volume as compared to the slow busy.
>
>This was pretty much standard in a No. 1 SxS in the
>Bell System, to the point that Evan Doorbell commented
>on it in his tapes...

Ah, thought I remembered something like that.  Maybe I will leave it 
alone!  :-)  All has to do with the coupling to the various circuits.  My 
busy goes right to the busy tone input on the connectors with no coil... 
thus you can dial up busy on two different lines and talk across it -- 
though you can't try that from CNET because there's only one path available 
from * to the switch.  Reorder is coupled through a transformer as is dial 
tone.  Though, both dial tone and reorder are hooked up the same way 
through identical transformers and I still have a different level between 
those two.  But, BT and reorder are gated through a 4066 chip and dial tone 
obviously isn't gated so that's another variable in the mix.  Seems to 
work, and if it mimics prototypical operation, more's the better.

D.




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