Wondering if anyone has come across discrepancies in call rating between originating carrier and their routing (CIC) carrier. So we have a scenario where calls with Canadian ANI are being routed to our non-Canadian CIC (US Carrier). Our US carrier is treating these calls as Canadian, based on ANI. The carrier (Verizon) handing calls off to our US carrier (instead of to our Canadian carrier) does so based on a different criteria (probably fact that they originate on one of their trunks in the US). So one of the two carriers here is wrong - either Verizon who should not be handing calls over to our US carrier, or our US carrier who should not be rating the calls as Canadian. This is what I got from our US carrier: *"TF rating jurisdiction will use the dipped LRN of the CPN first, then moves to the CPN (if no LRN present), then the orignum (if no CPN) and lastly the NPA-NXX of the originating FG-D trunk. Given that all of the calls I?m seeing coming out of this Pittsburgh area have a CPN value, we?d be dipping that CPN to figure out where it was coming from, and if that returns a Canadian number, we?d treat it as Canadian origination. That 504613 number would only be used if we got no CPN at all on the call."* The practical impact is that our cost is twice as high for our Canadian calls with the non-Canadian carrier. I am sure there is potential for this sort of discrepancy at other LATA level (if someone is using TF LCR or LATA based routing). If there is a Verizon contact on the list, I would be curious to get their opinion on why these calls (have examples willing to share) are rated as US, and how is Verizon's rating different from our US carrier. Thanks, <http://www.startelecom.ca> *Ivan Kovacevic* *VP Client Services* *STAR TELECOM* *5915 Airport Rd. Suite 610, Mississauga, ON L4V 1T1 Canada**www.startelecom.ca <http://www.startelecom.ca>* -- NOTE: This email message and any attachments are for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by replying to this email, and destroy all copies of the original message.