I don't buy it. You seem to be contending that the second NID is just a fancy transciever between fibers. But both boxes almost certainly have QSFP or some such

I don't buy it. You seem to be contending that the second NID is just a fancy transciever between fibers. But both boxes almost certainly have QSFP or some such, could input or output whatever fiber the job calls for. Quibbling about fiber types as an excuse for having two boxes seems absurd. Your assertion also seems contested by the words in this post: > Dispatch 5: NID #2 install. This is where I began to see the distinction between Verizon Telecom (VzT) and Verizon Business (VzB). While the layer 1 infrastructure had been installed and tested, there still remained the IP layer, which required another dispatch for another technician to install a dedicated NID for Verizon Business -- a Ciena 3903, with 1310nm single mode optics. It does mention a different fiber connection, but to me, this is describing each layer of the stack having both it's own organizational unit & it's own physical box that it manages.