Terms and definitions in messaging

Multichannel messaging service is based on a variety of telecommunication and Internet technologies. In the description of services, we often use abbreviations that may not always be known to you. Here we have compiled a glossary of terms and definitions used in the industry.

SS7 Network

The majority of the world’s mobile networks communicate with each other via Signalling System 7. This is a set of telephony protocols enabling the transmission of voice, data, control/session management information, and of course SMS. The SS7 protocol has layers based on the OSI (Open Systems Interchange) model. The MAP (Mobile Application Part) layer provides the functionality required for SMS transmission. The SMSC, HLR, VLR and MSC communicate together over the SS7 network utilizing MAP commands.