A policy control function device receives, from a mission critical video (MCVideo) application function, a DIAMETER AA-Request (AAR) command. The DIAMETER AAR command comprise: an attribute value pair (AVP) comprising an MCVideo-identifier identifying an MCVideo service; and a quality of service (QoS) parameter indicating a QoS of the MCVideo service. A Diameter command comprising one or more QoS policies based on the MCVideo-identifier and the QoS parameter is sent to a network function.
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