> For the complete documentation index, see [llms.txt](https://isdn.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://isdn.learn-telecom.com/services/bearer-services.md).

# Bearer Services

Integrated Services Digital Network (ISDN) Bearer Services are responsible for the transmission of voice, video, data, and other services over the digital network. 

These services provide clear channel data transmission through B-channels, typically at 64 Kbps, for various communication purposes. 

ISDN Bearer Services enable reliable and efficient communication by offering various features such as simultaneous voice and data, high-speed internet access, and secure data transmission.