> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/transmission-and-lines/tdm.md).

# TDM

Time Division Multiplexing, or TDM, is means of a combining two or more signal/media sub-channels along a given communications channel. It is the dominant approach for transmitting non-IP voice communications in a wireline communications network and is used in mobile telephony networks for communications between handsets and base stations.

### TelcoBridges and TDM

TelcoBridges supports TDM across its entire product line. All devices feature support for T1/E1/J1 interfaces, while some add support for DS3 and [STM-1](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/stm-1/README.md) interfaces as well via swappable [TDM modules](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/transmission/tdm-module-options/README.md). The following table shows TDM options for the Tmedia and Tdev families of products:

![TDM options](https://docs.telcobridges.com/w/images/0/09/TDM_options.jpg)

### References

[Wikipedia article](http://en.wikipedia.org/wiki/Time-division_multiplexing)


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