> 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/telecom-concepts/umts.md). # UMTS Universal Mobile Telecommunications System (UMTS) refers to one of the standards used for 3G mobile phone networks. It is based in part on the work of the 3rd Generation Partnership Project (3GPP. It is closely related to the standards used in the development of GSM networks. ### TelcoBridges and UMTS TelcoBridges supports UMTS networks through its [Tmedia](https://telcobridges.com/media-gateways/products/tmedia-gateways/) media gateways and [Tdev](https://telcobridges.com/products/development-platforms-tdev/) [value-added services](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/concepts/value-added-services/README.md) (VAS) development platforms. These support the [signaling protocols](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/sip-voip/signaling-protocols/README.md) and [voice codecs](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/voice-media/voice-codecs/README.md) that are used in the context of UMTS networks. As of July 2009, the [Tmonitor](https://telcobridges.com/products/network-monitoring-tmonitor/) series of devices for [network monitoring](https://telcobridges.com/products/network-monitoring-tmonitor/), [lawful intercept](https://telcobridges.com/media-gateways/solutions/lawful-intercept/) and [location-based services](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/concepts/location-based-services/README.md) does not currently support UMTS/3G networks. However, they do support 2G and 2.5G (also known as GPRS/EDGE) networks. ### References * [Wikipedia article](http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://prosbcdocs.telcobridges.com/telecom-references/telecom-concepts/umts.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.