Fiber optic hardlines, most of the time

On a cell network?

Lines don’t cross on a cell network

Everyone here talking like we are still using 2004 tech

Trust you bro? What are your books from 2005? Who uses PBX on a cell service other than for backup? Noone uses physical lines for switching anymore.

No they arent. Not unless you’re on a landline in a VERY old jurisdiction. Cell tower site switching is all done on either an ericsson BB6630 or newer ericsson/Nokia equivalent. Switching is done automatically, but based on the site file uploaded to said device. Even 3g has been decommissioned in 90% of markets in the US, and where you can get it, it’s running legacy firmware on newer hardware, for lack of a better term. There aren’t even any “lines” to switch anymore. It’s all fiber optics to the radios.

Trust me bro, I work in cell tower integration

Crossed phone lines do not happen anymore, unless you’re using a landline

Repeaters for what? The LTE backbone? Shortwave repeaters? Cell phones don’t work like shortwave radios

No they arent. Not unless you’re on a landline in a VERY old jurisdiction. Cell tower site switching is all done on either an erricsson BB6630 or newer ericcsson/Nokia equivalent. Switching is done automatically based on the site file uploaded to said device. Even 3g has been decommissioned in 90% of markets in the US, and where you can get it, it’s running legacy firmware on newer hardware, for lack of a better term. There aren’t even any “lines” to switch anymore. It’s all fiber optics to the radios.