> For the complete documentation index, see [llms.txt](https://gsm.learn-telecom.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gsm.learn-telecom.com/architecture/bss-base-station-subsystem.md).

# BSS - Base Station Subsystem

- [BTS - Base Transceiver Station](https://gsm.learn-telecom.com/architecture/bss-base-station-subsystem/bts-base-transceiver-station.md)
- [BSC - Base Station Controller](https://gsm.learn-telecom.com/architecture/bss-base-station-subsystem/bsc-base-station-controller.md)