A method for dynamically adapting a maximum bitrate (MBR) configuration of an IP Multimedia Subsystem (IMS)/Rich Communication Services (RCS) application, includes receiving a signal from a client server for an IMS/RCS application, establishing a bearer channel for an Internet multimedia communication, the channel having an initial preconfigured MBR, determining a codec used to transmit the communication, determining the bitrate used by a codec, and modifying the MBR of the channel based on the bitrate of the codec.