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.


The GSM Association’s Rich Communication Services (RCS) messaging standard was originally mooted in 2007. It promised an MMS experience for business-to-consumer messaging. But SMS enterprise messaging has prevailed instead.

RCS received a reboot when Google announced plans to provide RCS messaging as a native function of Android Messages. Now it's a growing number of carriers and OEMs agreeing to make it their default-messaging app, supporting the RCS standard.