A computer-implemented method for prioritizing a communication session within a network , the method comprising: ascertaining one or more attributes of a communication session that is initiated between a client device and an endpoint device ; determining that the communication session is authenticated with a communication service for a prioritized media path; and forming a notification that includes the one or more attributes and an indication that the communication session is authenticated for a prioritized media path; characterized in that : a media flow of the communication session is routed from the client device across a core Internet Protocol (IP) network to a radio access network , being both networks within the network , the prioritized media path comprising a prioritized path across the core IP network and a prioritized channel of the radio access network; and the method comprises communicating the notification to a network proxy to cause the proxy to: a) translate the attributes which are included in the said notification into a protocol recognized by the core IP network to mark the communication session at the core IP network with a prioritized class of service indicator and b) interact with the radio access network to cause the communication session to be routed at the radio access network from a standard wireless channel to a prioritized wireless channel for receipt by the endpoint device. ascertaining one or more attributes of a communication session that is initiated between a client device and an endpoint device ; determining that the communication session is authenticated with a communication service for a prioritized media path; and forming a notification that includes the one or more attributes and an indication that the communication session is authenticated for a prioritized media path; characterized in that : a media flow of the communication session is routed from the client device across a core Internet Protocol (IP) network to a radio access network , being both networks within the network , the prioritized media path comprising a prioritized path across the core IP network and a prioritized channel of the radio access network; and the method comprises communicating the notification to a network proxy to cause the proxy to: a) translate the attributes which are included in the said notification into a protocol recognized by the core IP network to mark the communication session at the core IP network with a prioritized class of service indicator and b) interact with the radio access network to cause the communication session to be routed at the radio access network from a standard wireless channel to a prioritized wireless channel for receipt by the endpoint device. a media flow of the communication session is routed from the client device across a core Internet Protocol (IP) network to a radio access network , being both networks within the network , the prioritized media path comprising a prioritized path across the core IP network and a prioritized channel of the radio access network; and the method comprises communicating the notification to a network proxy to cause the proxy to: a) translate the attributes which are included in the said notification into a protocol recognized by the core IP network to mark the communication session at the core IP network with a prioritized class of service indicator and b) interact with the radio access network to cause the communication session to be routed at the radio access network from a standard wireless channel to a prioritized wireless channel for receipt by the endpoint device. <EOS>