I'm not sure if this is the right sub-forum because I'm not sure if this is a NuPoint problem or a COS problem.
I've got a 3300 and a standalone NuPoint.
In a Call Director mailbox, I'm trying to set up an "alternate transfer" to an external number.
Let's pretend the external number is a cell phone at 5555555555
Currently, the dial string I'm using is S+5555555555+X
The timeout is set to 5 seconds (although I'll bump it up to 15 once I'm done testing).
When I initiate the transfer through call director, I hear hold music, and the cell phone starts ringing.
If I answer the call from the cell phone, it immediately disconnects.
If I don't answer the call, it times out and stops ringing at the 5 second mark as intended, but the call flow doesnt' progress. The internal call to the mailbox just hears dead air.
I've seen a lot of references to making sure that the trunk COS and the voicemail port COS have public to public enabled, and I've verified that.
Note that blind transfer to external works perfectly, and a supervised transfer works as well, but only supervises until the trunk picks up, at which point it becomes a blind transfer. I might be able to use an external hot desk license, but alternate transfer is supposed to be able to do exactly what I'm trying, I don't currently have any EHDU licenses available, and in the real and much more complicated call flow this is for, I would need a dozen EHDU licenses.