I had a typo in my post.
It should have been:
"You can send the calls to a SIP URI like this:
nomorobo_number@tf.callwithus.comNow you won't get charged.
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I don't know who generates the "please call again later" message. Nomorobo tech support seemed puzzled by that because they said a blocked call should have a different message with an option to press a key to prove that the caller is not a robot.
Sometimes when I call a tech support person, I get a total idiot.
I think you got one.
Setup an OBi speed dial to test Nomorobo like this:
spx(1866xxxxxxx@tf.callwithus.com;ui=6239156287)
Change 1866xxxxxxx to your Nomorobo number
Change spx to a SP number defined as SIP
6239156287 is a telemarketer that calls me.
I get message "please try your call again later".
This is why I think Nomorobo changed their messaging.
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I called my Callcentric account with a CallerID of "Skype xxx-xxx-xxxx" and it showed as Anonymous on the Callcentric dashboard. I think Callcentric is routing these calls to Nomorobo as Anonymous and that is why they are getting rejected.
Change your Call Treatment from routing any number to routing number 1xxxxxxxxxx to your extension and Nomorobo.
All other calls will default to ringing only your extension.
Try calling Callcentric with Skype.
What CallerID do you get on your OBi attached phone?
Is it Anonymous or "Skype xxx-xxx-xxxx"?