I have 2 PRIs that we are getting random long distance failures on outbound calls. These calls result in 1 ring and then a message stating "Thanks for choosing so and so for your long distance needs." and then going to fast busy before disconnecting. When it happens, it is always saying a long distance carrier that we don't use at any of our locations(ie, we are using AT&T, and one of the numbers we called resulted in saying thanks for choosing Nextel). This is happening across all device pools and CSS. CDR records show the call being passed to the PRI correctly. I called AT&T thinking this is a PRI issue, but all they did was test the circuit, say it was good, and close the ticket. I'm not completely familiar with PRI, but is it possible that AT&T could have different channels on the circuit set to use different long distance carriers? My thinking now is that maybe a couple of channels are set to the wrong carrier, the call is being passed out on one of those channels, it's starting to complete the call, and the wrong carrier is finding that we don't have an account and terminating the call. Since the same phone can sometimes call the same long distance number and be connected, after previously getting the error on that called number, it really doesn't seem to be on my end. Anyone seen anything like this?
