Rich Communication Services (RCS)
Rich Communication Services (RCS) is a communication protocol between mobile telephone carriers and between phone and carrier, aiming at replacing SMS messages with a text-message system that is richer, provides phonebook polling (for service discovery), and can transmit in-call multimedia. It is part of broader IP Multimedia Subsystem. It is also marketed as Advanced Messaging, Chat, joyn, SMSoIP, Message+ and SMS+.
See Melrose Labs RCS Messaging
Melrose Labs: We deliver innovative services in cloud communications across mobile, fixed-line, satellite and internet. Through these services, we enable businesses to communicate better with their staff and customers, and by doing so, increase their success.