23 Nov
2005
23 Nov
'05
1:56 p.m.
Rodney Joffe wrote:
As another thought: - Love 'em or hate 'em, the PSTN doesn't have this problem.
Uh, PSTN does have this problem too. If you are part of SS7 you can totally fake call origination information. This has been and still is abused for criminal-malicous activities and 'billing-optimization'. Remember the lawsuit of SBC et al against WCOM regarding termination charge misrepresentation? In the actual PSTN routing of a call the destination information is not authenticated either. The national regulators run registries where the carrier-owner of each number block is registered. Very much like in the RIR system. Depends on country a bit though. In some it's more strict and in others less. -- Andre