so when the busy tone is detected you need to flash the hook (send the recall pulse) and then send the tones, to flash the hook all other devices on that line must be on hook. or the CO will only see a click.
how are you controlling the phone line?
-- Bye. Jasen
"Controlling" is a bit of an overstatement. Franc Zabkar remembered the modems of our youth and recalled the technical term. So I will say that I am using an acoustic coupler. Here's my original post-
Thanks to several posts I now understand what Recall (Flash) does at the exchange. For the time being I have accepted that I cannot acoustically couple a Recall/Flash but I still would liked to send the appropriate sequence of tones after the Flash to enable automatic call back. I have, so far, failed. The Flash is not the problem since automatic call back works if I use the phone to key in the *37# and press dial.
David Segall wrote: [...]
Yes, but you are hanging up with the phone then picking up again before dialling, aren't you? This is what the flash *is*.
Cheers, Nicholas Sherlock
IMHO just output the DTMF code for the command
Sorry about oversimplistic response to first post. Lots of good sense here and I was way too shallow.
There is no DTMF tone for a TLB.
-- Kwyj
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