[VoIP] Mitel Smart-1 as Pulse to Tone Converter

[Steph Kerman]

Donald Froula wrote:
> The problem is that the Smart-1 picks up the outgoing phone line as 
> soon as the phone goes off-hook. By the time I rotary dial all the 
> digits and the Smart-1 cuts through, the PAP2 ATA has already timed 
> out to reorder.
That is to prevent an incoming call on the associated CO line during 
digit acquisition by the Smart-1, which would make the call impossible 
to complete.
> I can adjust interdigit timers in the PAP2 to wait long enough after 
> the first digit, but there is no timer I can find to control the 
> off-hook to reorder timing.
>
> Ideally, I'd like the Smart-1 not to pick up and dial the outgoing 
> line until it detects a pattern match on the incoming digits. I've 
> been through the manual a
> few times, but can't see how this would be done.
I'm not familiar with the programming of the Smart-1.

A hardware kludge could be installed in the Smart-1 to open the loop, 
releasing the ATA until the last DP digit is received.  You would have 
to count digits and re-close the loop during the last digit so that the 
ATA would be ready to accept DTMF by the time the Smart-1 starts 
outpulsing.  Pretty kludgy but short of disassembling the Smart-1 
firmware or replacing the ATA with one that allows control over the 
permanent signal timing, no other solution comes to mind.

I have schematics for some Smart-1 versions, which would facilitate 
modifications should you choose this solution.  Perhaps the Sandman 
device, with an applique to prevent the ATA from detecting the dial 
pulses, is a simpler and better solution after all!

Steph