SIP scanners
Kaytor:
Does the inboundcallroute change potentially block a call back from a 911 operator? I'm not sure if the 911 callback would be 7 digits.
adamb2k12:
That is a really good point Kaytor. We should definitely prepend this rule set with
{911:ph},
That will ensure that a call coming from 911 is allowed through. I've only received bad calls from 3 digit numbers and 555-0000 so far, so my rule looks like this (now with the 911 rule):
{911:ph},{(xxx|555x.):},{ph}
This basically allows 911 no matter what, and blocks any other 3 digit # and anything starting with 555.
QBZappy:
Quote from: adamb2k12 on November 01, 2012, 06:59:23 am
That will ensure that a call coming from 911 is allowed through.
It's unlikely that the return CID will show up as 911. There is no easy solution for this. I think you might get various different CIDs such as UNKNOWN, PRIVATE, etc..
CoalMinerRetired:
Quote from: QBZappy on November 01, 2012, 07:51:50 am
Quote from: adamb2k12 on November 01, 2012, 06:59:23 am
That will ensure that a call coming from 911 is allowed through.
It's unlikely that the return CID will show up as 911. There is no easy solution for this. I think you might get various different CIDs such as UNKNOWN, PRIVATE, etc..
I need to point out that the Obi -- at least IME on my Obi202 -- does not display PRIVATE, UNKNOWN or ANONYMOUS. All I see are two blank lines, where the number and the name usually are. See this and this.
If you are seeing a different behavior, reply in those linked threads.
ianobi:
I agree. I have never seen PRIVATE, UNKNOWN or ANONYMOUS showing up as a Peer Number in an OBi. However, OBi will accept all of those or any other combination of letters and numbers, and use it as a Peer Number for routing etc.
I guess it all depends on what the hundreds of service providers (or scammers using scanners) wish to send as a Caller ID. I have seen "TEST" sent, I'm not sure if that was scanners or a genuine test call arriving at the wrong place!
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