<div dir="ltr">I thought it worth sharing some feedback from a coworker who has been doing this a few decades longer than myself:<div><br></div><div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif">"First, there’s no such thing as a “Canadian” TFN. There are NANP TFNs that can, in theory, be dialed from anywhere in the NANP. Due to massive cost differences, NANP telcos allow TFN owners to restrict dialing to certain areas – 48 states, AK, HI, Canada, USVI/PR, Caribbean, or any combination thereof.</font></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif"><br></font></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif">"Second, it doesn’t matter what the ANI of the calling number is. What matters is where the call is dropped into the PSTN. Thus, if a TFN that is restricted to Canadian callers only is dialed, and we drop that call off to one of our US TF Termination vendors, the call will be blocked, as the first PSTN vendor in the line does an SMS dip, sees this TFN is restricted to Canada dialers only, sees the call is entering the PSTN in the US, and rejects it whether the calling number has a Canada NPA or a US NPA."</font></div></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif"><br></font></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif">I hope this helps you find a solution.</font></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif"><br></font></div><div style="font-size:12.8000001907349px"><font face="Arial,sans-serif">--Calvin, a voice services engineer</font></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 23, 2015 at 8:38 AM, Ryan Delgrosso <span dir="ltr"><<a href="mailto:ryandelgrosso@gmail.com" target="_blank">ryandelgrosso@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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We have trunks with a few canadian providers and route calls from
canadian source numbers to TF calls exclusively over trunks to
canadian providers. Usually that solves the issue. <br><span class="">
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<div>On 1/22/2015 10:39 AM, Ujjval Karihaloo
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<div>Hi All:<br>
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We are being told by Level3 that if a Canadian DID calls a
Canacdian TF number, they cannot guarantee call complete and its
best effort. Anyone else run into something similar?<br clear="all">
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