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-   -   New service request. Block non-caller-id calls (https://www.cableforum.uk/board/showthread.php?t=27923)

jonifen 30-04-2005 00:04
Re: New service request. Block non-caller-id calls
 
Quote:
Originally Posted by Raistlin
Good idea, but that only blocks calls where the caller has witheld their number.

Many of these calls simply don't have the number forwarded, which is a totally different kettle of fish.
When we have it enabled on our phones, my mate cant phone us from his work (he works in a hospital) and I cant phone home from my work (I work at Woolies). Both places dont withhold the number, but rather "the number is not available". I've never received a call that I couldnt get the number for by dialling 1471.

If it helps, I'm in an ex-CWC area and I use *227# to enable it and #227# to disable it.

Chrysalis 01-05-2005 00:23
Re: New service request. Block non-caller-id calls
 
Well what makes a number simply not be available?

They must be witholding it some other way.

bob_builder 03-05-2005 10:52
Re: New service request. Block non-caller-id calls
 
Quote:
Originally Posted by Chrysalis
Well what makes a number simply not be available?

They must be witholding it some other way.
A lot of old private exchanges (before CLID) do not pass on any number. So if you route you call via one of them you get a "number unavailable" message and not a "number withheld" message.

Chrysalis 04-05-2005 00:09
Re: New service request. Block non-caller-id calls
 
Interesting yeah thats a problem, when you say private you mean it would only affect special types of customer?

bob_builder 04-05-2005 10:38
Re: New service request. Block non-caller-id calls
 
Quote:
Originally Posted by Chrysalis
Interesting yeah thats a problem, when you say private you mean it would only affect special types of customer?
Private exchanges (the type you have in a company connecting all the extensions together and to the outside world) as opposed to a public exchange (the type a home customer is connected to with NTL or BT).

Modern private exchanges will normally issue the direct dial number of the extension calling out or a "presentation number" (usually the main reception or switchboard number).

Stuart 04-05-2005 10:55
Re: New service request. Block non-caller-id calls
 
Quote:
Originally Posted by bob_builder
Quote:
Originally Posted by Chrysalis
Interesting yeah thats a problem, when you say private you mean it would only affect special types of customer?
Private exchanges (the type you have in a company connecting all the extensions together and to the outside world) as opposed to a public exchange (the type a home customer is connected to with NTL or BT).

Modern private exchanges will normally issue the direct dial number of the extension calling out or a "presentation number" (usually the main reception or switchboard number).
Also known as PABX's I believe?

Chrysalis 04-05-2005 20:48
Re: New service request. Block non-caller-id calls
 
Hmm isnt this illegal to not have the calling number traceable?

bob_builder 05-05-2005 11:25
Re: New service request. Block non-caller-id calls
 
Quote:
Originally Posted by Chrysalis
Hmm isnt this illegal to not have the calling number traceable?
It is still traceable using the old-fashioned methods before CLID existed, it just does not present a number as CLID data.

In fact, relying on CLID data to "trace" a call is not enough. The data can be faked or scrambled anywhere along the chain. In fact, there are legal charging services in the US that will do this for you.


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