On 10/06/2010 05:33 PM, Alex Balashov wrote:
Yeah, not everybody uses the same CNAM lookup providers, and there's a lot of caching going on.
Characteristically, the most accurate and up-to-date database is the one the ILEC uses; many of these VoIP ITSPs and CLECs use other third parties, and either they or the third party do a fair bit of caching and questionable update processes to save money on CNAM dips.
The whole thing's pretty stupid; it should just be canceled.
99% of it comes back to: http://www.targusinfo.com/solutions/identification/caller_name/ Syniverse uses these guys. Verisign always used its STPs and GTT to route you to the direct CNAM databases and get you the right data from the proper industry databases. Targus does not do that, despite their ironically written website they're 99% of the CNAM problem in this nation. TNS used to use them, but recently moved to their recently acquired Verisign network for caller ID with name data so they no longer have the issue either. AT&T (upper and lower case AT&T, that is) don't have this issue, nor do the ILECs obviously. -Paul