[VoIP] Temporary old busy and reorder tones up on 366

[Doug Alderdice]

Hey gang,

Trying out putting "old" dial tone (600/120), busy and reorder on my switch 
through the use of an ISD digital recording chip.  Jayson Smith some time 
back made me a .wav file of 600/120 which I recorded into a 10-second 
capacity ISD chip.  I set the chip for looped playback and there is very 
little, if any, "pop" where the chip cycles around from the end of the 
recording back to the beginning.

I have modified the program in the PIC 16F84 that serves as interrupter and 
(single) tone generator to also provide 60 IPM and 120 IPM outputs so I can 
gate a 4066 chip to provide the right interrupter rate for busy tone and 
reorder.

At the moment the mess is clip-leaded into my switch.  You can check out 
"old" busy on 366-3214 and reorder at 366-34XX.

This is a limited time offer, as it currently exists on a plug-in 
breadboard.  I will leave it up until around 1900 ET (2300 UTC) tonight and 
then I will connect back the original single tone dial tone and busy 
tones.  With proof of concept I now need to build a permanent perf board to 
hold all this.

Eventually I also want to use a second ISD chip to supply 420/40 ringback 
tone on my ringing supply as well.

Cheers,

Doug.