We have a mostly Canadian contact center clients and our clients frequently transfer to Canadian, as well as US TFNs. What we find is that when routing through Canadian CLECs, calls to Canadian TFNs tend to terminate consistently, with the exception when our clients don?t set a valid CLI. Some IVRs are programmed to ignore UNKNOWN/Witheld CLI (or US NPAs). But this is usually an IVR limitation, not the telephone network. Terminating to Canadian TFNs via US Carriers is spotty at best. Resulting in similar outcomes folks already mentioned? That being said. We are our own RespOrg, so I know for a fact it is possible to block US calls to Canadian TFNs and vice versa, based on LATA configuration. In fact for our clients, we use two different carriers to route Canadian calls and US calls to the same TFN, based on originating LATA. So sometimes the number itself will be limited to receive calls originating in Canada. It?s a mess J. Best Regards, Ivan Kovacevic Star Telecom | www.startelecom.ca *From:* voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] *On Behalf Of *Shripal Daphtary *Sent:* October-19-12 9:24 AM *To:* VoiceOps at voiceops.org *Subject:* [VoiceOps] Canadian TFN Calls Hi all, I have an issue that seems to have arisen (perhaps recently), that i'm unsure of how to resolve. We have a few customers in the Toronto, ON area where the outgoing CLID set as a Toronto TN (sourced from bandwidth.comi believe). when these customers dial canadian Toll Free numbers, the TFN provider rejects the call. we send these calls our our level3 EVT trunk. Level 3 states that they only support canadian TN's calling Canadian TFN's as "best effort". we have the same issue sending the calls out Bandwidth, where they might likely send the call out Level3 as well. we have the same issue sending the calls out windstream. has anyone seen this issue as well? i'm going to try a few more carriers. thanks, shri