There is a sprint logo next to the phone on the settings->Phones page..
Interesting: On the received calls page, when I try to verify, it shows a call to my MT. I noticed a "call" option on this received call notification, which will call my landline and the number in question and connect the two phones on a call. (kinda strange but ok, I get it). When I do this however, I get a busy signal on my landline calling the Triumph even though the Triumph is idle. Something is wrong there. It can't reach the triumph. I can of course call the Triumph directly from my landline and have no trouble generally.