Block calls with a twist...
azrobert:
I send unwanted calls to my Callcentric Fax to Email service like this:
{(Mblk):sp2(17771234567@in.callcentric.com;ui=48099999999)}
17771234567 is your Callcentric account.
In Callcentric Call Treatments route CID 4809999999 to FAX.
I read that some robo call systems will auto-remove your number from their list if it senses a FAX tone.
I don't know if this is true.
ianobi:
Quote
I read that some robo call systems will auto-remove your number from their list if it senses a FAX tone.
Seems logical from the robo call system point of view.
I've tested some more and run into a problem which I think has been noted before. This:
sp1($1>$1)} equates to sp1(cid>target)}
$1 is an internal variable containing the value of the caller number of the inbound call.
According to the Obihai documentation sp1($1>$1)} should work. In fact the first $1 does not work and has to be a literal string. The second $1 does work.
Using softphones I got this to work:
sp1('fraudsquad'>$1)}
Normal DECT phones etc won't display "fraudsquad", but maybe a robo call system will record it! Alternatively, you could use a local police or fraud squad number and use this format:
sp1(12345678901>$1)}
12345678901 will be sent as CallerID to the number that made the original call.
Anyhow, there's a few ideas. As QBZappy pointed out, the incoming CallerID may be bogus as we often see CallerIDs such as "100", "1000" etc.
QBZappy:
Quote from: ianobi on March 08, 2014, 07:44:54 am
Or send them to an echo test and they can talk to themselves :)
I like this one. :D
giqcass:
Quote from: azrobert on March 08, 2014, 07:50:37 am
I send unwanted calls to my Callcentric Fax to Email service like this:
{(Mblk):sp2(17771234567@in.callcentric.com;ui=48099999999)}
17771234567 is your Callcentric account.
In Callcentric Call Treatments route CID 4809999999 to FAX.
I read that some robo call systems will auto-remove your number from their list if it senses a FAX tone.
I don't know if this is true.
I can verify many autodialers have fax detection. I can't verify they remove the number. This is a very good idea. I wonder if a working solution could send a short fax tone before ringing our phone for unknown numbers?
azrobert:
Quote from: giqcass on March 08, 2014, 09:03:49 am
I can verify many autodialers have fax detection. I can't verify they remove the number.
Why would they have fax detection if they didn't do anything with it?
If they were smart enough they could start sending ads to you via fax, but I've been doing this for years and it hasn't happened to me.
Edit:
I'll answer my own question.
They wouldn't transfer the call to a rep if they detect a fax.
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