<P> The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem ( IMS ) is an architectural framework for delivering IP multimedia services . Historically , mobile phones have provided voice call services over a circuit - switched - style network , rather than strictly over an IP packet - switched network . Alternative methods of delivering voice ( VoIP ) or other multimedia services have become available on smartphones , but they have not become standardized across the industry . IMS is an architectural framework to provide such standardization . </P>
<P> The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem ( IMS ) is an architectural framework for delivering IP multimedia services . Historically , mobile phones have provided voice call services over a circuit - switched - style network , rather than strictly over an IP packet - switched network . Alternative methods of delivering voice ( VoIP ) or other multimedia services have become available on smartphones , but they have not become standardized across the industry . IMS is an architectural framework to provide such standardization . </P>
what is ip multimedia subsystem ( ims )
what is ip multimedia subsystem ( ims )
an architectural framework for delivering IP multimedia services
an architectural framework for delivering IP multimedia services