You can't just take a legacy telco CO full of things like Cisco 15454s with OC-12/OC-48 SDH/SONET interface cards, linked to the nearest major city by SDH/TDM circuits, and pipe it through a gigabit ethernet link into a power over ethernet powered (microwave, millimeter wave or satellte) thing on the roof.
If you look around in a place like that you'll see fun things like 1RU rackmount DS3-to-DS1 mux devices connected to legacy TDM transport gear, for SS7/PSTN links, 911 and such.
If you look around in a place like that you'll see fun things like 1RU rackmount DS3-to-DS1 mux devices connected to legacy TDM transport gear, for SS7/PSTN links, 911 and such.