Displaying Withheld Numbers

[alay]

tried that but only got command error (*30#)
(*#30#) gave me active

I think those code 30s are purely" to display" or "not display" normal non-withheld calls !

The default state would be to show them.


Is this not so ?

It would indeed be interesting to get those codes to show the withheld numbers.

 

[Simba27]

I work for a company that writes telecommunications software. EVERY piece of equipment that the call passes though gets the originating number, the destination number and a privacy indicator which dictates whether or not the number should be displayed at the final destination.

The privacy indicator is turned on when the caller dials 141, but the information is still sent (it needs to be for billing etc). The software at the receiving end should respect the privacy indicator and not display the originating number, but I'm sure that in many cases it can be overridden.

I don't know how to do that, it's probably manufacturer dependant.

 

[ATD]

has this code ever been found? - I also know for a fact that this facility does exist.

 

[p.laver]

I know this is a little late, I would be very interested to know what the answer is to Displaying Withheld Numbers. I have been receiving a nuisance call for around 4 yrs and would love to get hold of the number.

Any help would be much appreciated.

 

[Analoguesat]

Try our sister site

_http://www.mobileexpert.co.uk/

 

[Channel Hopper]

Just recalling something prompted by Simbas post.

A few years ago I was told that mobile phones had an internal code that could be used by the emergency services to trace activity (triangulation within cells). Additionally if the phone was registered with a valid address it could be used to make emergency calls without a Sim card.

Now that 1984 has passed it wouldn't surprise me that the authorities might be utilising the location aspect on potential suspects, and the witheld number system may be overridden in certain cases.

 

[Analoguesat]

Triangulation is easy enough - unless you are in a very remote area the phone will be picked up on 3 or 4 phone masts. Then its an easy job to work out where it is from the time delays at each mast - the more masts its picked up on the better the triangulation

 

[huntingtigers]

I was peed of when i got calls from witheld number to my moby. There is a piece of software which is uploaded from your nearest unlock shop. it allows displaying of withheld numbers. this is old news.

I also reside in London, would you care to divulge a specific shop that performs this service. Thanks

 

[BombedOne]

I don't know what about UK, but here such service is avalable for major operators, and is called AntiCLIR.

 

[p.laver]

I also reside in London, would you care to divulge a specific shop that performs this service. Thanks

I would also be interested in any info, I've googled 'AntiCLIR' but can't find any info in English

 

[BombedOne]

CLIR=Caller Line Identification Restriction.

In short - regardles who and how calls you, your phone operator ALWAYS knows his phone # - because he has to bill it, if he can't identify the number, there's will be no connection. But, if the flag CLIR (delivered together with incoming ringtone) is set to on, the phone won't show the number. Some old phones just ignore the CLIR flag, so they are able to display witheld numbers.

Other way to ignore CLIR flag, is to make certain request via USSD, so phone company will disregard CLIR signal, coming to your number. In past, the software that was used by phone companies had some backholes, so it was possible to activate CLIR rejection without any payment. Now these holes are fixed, so you have to pay.

Here's link to my phone company page, where's some info about this service in english:

_ttp://www.magticom.ge/index.php?section=93&lang=eng