sentences:  It implements industry standard telecom protocols and standards such as SS7, ISUP, TCAP, SIP, MRCP, RTSP, and VoiceXML.The HPE OpenCall line of telecommunications platforms is offered by HPE Communications & Media Solutions organization in four main areas—media server, service and charging control, signaling, and subscriber mobility.The HPE OpenCall Media Platform is a voice and video server and media resource function platform used for developing and deploying messaging, portals and interactive services.