This report examines IP Multimedia Subsystem (IMS) and Rich Communications Suite (RCS) to understand their history, development process, current status, and implications for mobile network operators and their customers. IMS is a control layer within an operator's network that centralises customer data into a single user profile that applications can use to authenticate customers and deliver services to devices regardless of transmission network. Operators seeking fixed-mobile convergence have deployed IMS components to interconnect modern all-IP infrastructure with legacy networks. Telecoms equipment vendors and the GSM Association have been discussing IMS since 2004, both parties focusing their marketing messages on network efficiency and richer customer communication. Trials with MNOs have revealed difficulties with coordinating parties to ensure interoperability, and confusion over standards and specifications.
As MNOs in mature markets plan for the introduction of LTE (which employs key concepts from the IMS core), this report examines the case for and against IMS and RCS and the reasons why IMS may be more important to MNOs and telco equipment vendors than to developers and customers.
Keywords: IP Multimedia, IMS, LTE, Rich Communications Suite, RCS, IP Multimedia Subsystem,
|Table of Contents|
|2.1||Background to the Report||2|
|2.3||Currency and Conversions||2|
|3||Background & Definitions - IMS & RCS||4|
|4.2||Nokia Siemens Networks (NSN)||7|
|4.6||Alcatel Lucent (ALU)||9|
|5||IMS & RCS Pros and Cons||11|
|5.1||Introduction and Overview||11|
|5.2||The User Point of View||12|
|5.4||RCS Use Cases||13|
|5.5||Efficacy, Logistics and Trials||14|