Interfaces used for MO-MT
![](https://4minutesago.com/wp-content/uploads/2023/12/DALL·E-2023-12-13-15.08.38-A-detailed-diagram-illustrating-the-various-interfaces-used-during-a-mobile-originated-MO-and-mobile-terminated-MT-call-in-a-cellular-network.-The-768x768.png)
The European Telecommunications Standards Institute (ETSI) has defined various interfaces and protocols for mobile telecommunications networks. While ETSI primarily focuses on the standardization of telecommunications protocols and interfaces in general, it does not specify interfaces for specific stages of a…