Tango 11 isn't Incident Management, they are 290's in Salt Lake County, 300 somethings in Utah County....but they're always 3 numbers.
As for AP&P and Transportation, they are "sort of" together.
"Regular" (for lack of a better term) prison guards are Cat 2 certified peace officers. They've been through the SFO/Correctional block, but have not been through the LEO block of POST. They cannot carry a weapon with them offsite.
Transportation and AP&P are Cat 1 certified peach officers who have been through both the SFO and LEO block. While they do work independently from each other, they tend to swap people etc and since they're both out in the field, they tend to use the same channels. Of course AP&P in Salt Lake also uses UHP's channels.