sherbert wrote on Nov 10
th, 2009 at 11:22am:
When I dial 1471 I get the message...
'We do not have the callers number'
and also
'The caller withheld their number'
There must be some difference in the meaning but does anyone know what it is?
CLI can be "Unavailable" or "Withheld". I presume that the former message is when it was unavailable and the latter is when it was withheld.
Information on those categories is available from Ofcom:
http://www.ofcom.org.uk/static/archive/oftel/ind_groups/cli_group/docs/guideline... Quote:9. Privacy and privacy markings
9.1 Privacy is the complex of rights over CLI information conferred on end users by data protection legislation which leads to the generation of a privacy marking.
9.2 In order that communications providers are able to respect an end user’s wishes, it is important that a privacy marking is associated with a call. For ease of reference, the four privacy markings adopted to satisfy data protection requirements by the most recent version of the ETSI/ISUP signalling system (EN 300 356 V4) are:
9.2.1 Available
where the caller has been given the possibility of preventing the display of CLI information and has chosen not to do so
9.2.2 Withheld
where the caller has been given the possibility of preventing the display of CLI information and has chosen to exercise this option
9.2.3 Unavailable
where, at any point in the end-to-end conveyance of a communication, it is not possible to offer an end user privacy choices and respect them
9.2.4 Network restricted
the display of the caller’s CLI information is prevented by communications providers in order to preserve the anonymity of law enforcement and other government agencies (NB – although specified by ETSI, this classification is not used within the UK)
9.3 Where a privacy marking is not explicitly associated with a call, CLI data shall not be passed unless the caller's privacy wishes have been unambiguously established.
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01013 on caller display and from 1471 service (Read 13,695 times)
