anonymous-remailer@shell.portal.com writes:
As I understand the whole SS-7/ANI/CID thing, CO generates the field ("header") only when a previous one is not already present in the call.
ANI and CID are different, by the way.
Surprise: Your number!
The only way I can imagine this working is if the ultimate receiver of the caller ID information is badly designed, and the diverter in question is strangely designed to exploit those bad designs. Caller ID comes through between the first and second ring pulses. Any Caller ID box or modem that decides to recognize the modulated CID information after the second ring pulse is, IMHO, broken. The only place for your dreamed-of device or the diverter you described to put the CID information is directly through the completed circuit after the called party answers. If they have a truly brain-damaged caller ID box that only stores one number, and they fail to look at the box before they pick up the phone, then *maybe* they'd be fooled. Doesn't sound like much "security" to me. Do you really have access to one of these call diverters? If so, could you post the brand and model? | GOOD TIME FOR MOVIE - GOING ||| Mike McNally <m5@tivoli.com> | | TAKE TWA TO CAIRO. ||| Tivoli Systems, Austin, TX: | | (actual fortune cookie) ||| "Like A Little Bit of Semi-Heaven" | | GOOD TIME FOR MOVIE - GOING ||| Mike McNally <m5@tivoli.com> | | TAKE TWA TO CAIRO. ||| Tivoli Systems, Austin, TX: | | (actual fortune cookie) ||| "Like A Little Bit of Semi-Heaven" |