Solving the Caller ID Problem - O'Reilly Emerging Telephony

"In the wake of the proposed Truth in Caller ID Act, a lengthy discussion of the issues around reliable Caller ID data recently took place on the excellent Voice Over IP Security Alliance VOIPSEC mailing list. While many points were debated, two things are clear: VoIP-based systems connecting to the PSTN have increased the unreliability of Caller ID data, and law enforcement agencies have legitimate needs to be able to get access to call record information that is becoming increasingly difficult to obtain. "

Solving the Caller ID Problem - O'Reilly Emerging Telephony:

A Proposal for Solving the Caller ID Problem

"There is growing concern over the interaction of VoIP systems with the legacy PSTN, and the transmission of caller identity data--most notably, Caller ID on the PSTN. It is not always possible, or obvious how, to handle Caller ID data when moving to or from VoIP and the PSTN networks. There are even business models predicated on the ability of Caller ID to be transmitted to the PSTN with a value that is not 'expected'; call centers are an obvious example, where customer-support staff make outbound calls with a Caller ID that may be from one of many possible clients. More troubling is the possibility that Caller ID may be used to trick unsuspecting call recipients into certain actions or beliefs, and it is this concern that's currently creating a legislative threat I believe must be averted."

O'Reilly Network -- A Proposal for Solving the Caller ID Problem