Caller ID withheld - but no!
Discussion
Called a certain USA auction site via mobile - deliberately set my outgoing caller ID to private so I was surprised to get a call back from them 30 minutes later after the call ended.
How were they able to call me back with a private outgoing caller ID?
Phone's OS = 'Android Orio' (IIRC).
How were they able to call me back with a private outgoing caller ID?
Phone's OS = 'Android Orio' (IIRC).
maffski said:
When you withhold the number you're not withholding it at all. You're just setting a privacy flag to tell the recipients equipment that you don't want the number displaying.
The 'privacy flag' seems like a back door for those with 'the tech' which can lead to security breeches. Any sure-fire way to withhold a number then? Time for a burner.maffski said:
It might work if you use an international call routing service.
I think in the UK it's illegal for a company to make use of the withheld number.
Any idea if it's possible, and if so how easy it is for those with 'the tech' to track a mobile number to a physical location in real time? I think in the UK it's illegal for a company to make use of the withheld number.
maffski said:
When you withhold the number you're not withholding it at all. You're just setting a privacy flag to tell the recipients equipment that you don't want the number displaying.
Your not telling the recipients equipmentYou are telling the far end network provider that your number is private. It is illegal for the provider to display it to the far end customer.
Unless there is a fault of some kind etc..
Jimboka said:
Your not telling the recipients equipment
You are telling the far end network provider that your number is private. It is illegal for the provider to display it to the far end customer.
Unless there is a fault of some kind etc..
However this does require the equipment to recognise the "presentation withheld" flag , which depending on the exchange/CO/ or Voip solution .. it might not. You are telling the far end network provider that your number is private. It is illegal for the provider to display it to the far end customer.
Unless there is a fault of some kind etc..
Pothole said:
vaud said:
The number is never fully "withheld" - for instance, the UK emergency services can always see it.
Except not.https://home.bt.com/news/bt-life/what-happens-when...
https://ico.org.uk/for-organisations/guide-to-pecr...
"Emergency 999 and 112 calls
Regulation 16 sets out an exemption for emergency 999 or 112 calls. Callers cannot withhold their number on these calls. This is to enable the emergency services to make return calls if needed. Also the rules on location data do not apply, so that the emergency services can be informed of the caller’s location quickly and easily."
There is a risk for VOIP calls where the databased has not been completed by the user.
OlonMusky said:
Pothole said:
vaud said:
The number is never fully "withheld" - for instance, the UK emergency services can always see it.
Except not.Pothole said:
OK, I'm intrigued. Tell me all about it.
On any call made there's 2 bits of information sent to the Callee, the CLID and PAID.The CLID is the number that would normally be presented to the Callee, the PAID is the actual number assigned to that particular phone.
For example if you work for a large company which has individual direct dial numbers, your CLID would be the company main number (or an 0800 type number if they use presentation number) the PAID would be your direct dial nunmber. Vast majority of networks will look at the incoming call and display the CLID.
When you call 999 they look for the PAID, this should be linked to an accurate physical address so that if you are unable to give an address they have something to send to the crews that will attend. In a VOIP type system these are flagged to make the operator aware that these may not be strictly accurate.
ooo000ooo said:
Pothole said:
OK, I'm intrigued. Tell me all about it.
On any call made there's 2 bits of information sent to the Callee, the CLID and PAID.The CLID is the number that would normally be presented to the Callee, the PAID is the actual number assigned to that particular phone.
For example if you work for a large company which has individual direct dial numbers, your CLID would be the company main number (or an 0800 type number if they use presentation number) the PAID would be your direct dial nunmber. Vast majority of networks will look at the incoming call and display the CLID.
When you call 999 they look for the PAID, this should be linked to an accurate physical address so that if you are unable to give an address they have something to send to the crews that will attend. In a VOIP type system these are flagged to make the operator aware that these may not be strictly accurate.
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