Hi Mark,
I've done this using SPA-2000, SPA-2000 can generate polarity reversal
signal, The pay-phone detects "call answer" and "hangup" by revesal
signal.
also the pay-phone must be supported polarity reversal detection.
http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800a6210.shtml
http://michigantelephone.mi.org/distribute.html
Cheers,
~Madhawa
I tried the reverse polarity and it didn't seem to make a difference.
Let me back up and take the payphone out of the equation. If hook up a
house phone to the ATA and take it offhook, it get a busy signal after
10 seconds. I really need this to be more like 1 minute. Any ideas on
how to do that?
Mark
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