The SIP protocol is an application-layer protocol.

The Call-ID header field serves as a unique identifier for a collection of messages, and in a conversation, the Call-id must be the same in all the last requests sent by each UA. ( )

The Clear Fluency Strategy works with the H.264H.265 protocol, and if there is no ability in the public capability, the Clear Fluency Strategy will not work. ()

The main advantages of AAC-LD audio encoding are: low bandwidth, low latency, and high quality. ()

H.460 The envelope in the media streaming interconnection scheme is created by which of the following protocols is established. ()