CM Tooltip Glossary

SMSC (Short Message Service Center)

A Short Message Service Center (SMSC) is a network element in the mobile telephone network. Its purpose is to store, forward, convert and deliver Short Message Service (SMS) messages. The full designation of an SMSC according to 3GPP is Short Message Service – Service Center (SMS-SC). Basic trajectories of SMS are:

1. From mobile to another mobile – referred to as MO-MT (Mobile Originated – Mobile Terminated)
2. From mobile to a content provider (also known as Large Account / ESME) – referred to as MO-AT (Mobile Originated – Application Terminated)
3. From application to a mobile – referred to as AO-MT (Application Originated – Mobile Terminated)