IPC channel display on NVR Monitor

[tinman_202758237290700]

The leftmost column of the IPC channel display is just a number. But as far as I can tell it has no purpose - and in fact it can be confusing/misleading. That number is unrelated to the numbering of the POE connections in the back. The channel column allows the user to select a channel for each row. I'm curious about this as well and I'd like to know the point of being able to do this. I must be missing something about the design of this UI.