Calling Line Identity

Will 0800Buster accept my calls if I with to call with my mobile number witheld ? I'm happy to register who I m to you, but I wish to remain anonymous to the callee. Is this possible ?

My understanding is that 0800 Buster are a Tier 1 telephone provider. They are obviously re-originating the call and for the CLI to be passed to the recipient, they (0800Buster) are re-injecting the CLI into the network, rather than using the CLI of the number from which they are making the "new" call.

If they can inject "any old CLI" into the network (and you trust them to do it properly), then they can just as easily inject the "WITHHELD" flag into the network.

0800Buster will see your CLI whether you withhold or not.

They appear to have the facility to mark the ongoing call as withheld (so an outside-of-the-network recpient won't see the number). Whether they actually do or not, I don't know.

If they do, it begs the question as to whether the 141 prefix should be dialed before the 0800 B number, or whether it should be dialed as DTMF when dialing the ultimate 0800 number.

It *should* be dialed before the 0800 Buster Number, and interpreted by them as an instruction to withhold. Also, those people who have withhold-by-default (possibly using 1470 to unwithhold) should have the correct withhold status sent to the callee.

Unlike in the USA, 0800 recipients (unless they're a telco), don't get to see withheld numbers.

> Unlike in the USA, 0800 recipients (unless they're a telco), don't get
> to see withheld numbers.

I'm not sure how accurate this is. The UK job centre 0800 number definitely gets the CLID when phoned, and they are not a telco.

I got the idea from somewhere - I think it was sales info for 08xx services - that 08xx number callees get the CLID even if the caller precededs the 08xx number with 141 (from a BT land line).

I tested this. I rang my mobile from my BT land line preceding the number with 141, and it said "withheld", as expected. I then called the job centre on 0800 055 6688, preceded with 141. When the guy at the JC wanted my contact number, I said it was the number I was calling from. He had the number right there, so it can't have been withheld as I expected.

If the JC can do this, who else can? And does it apply to other 08xx numbers, like 0845 or 0871?