SIP is an application layer protocol that is independent of the transport layer protocols below and can be hosted on different transport protocols, such as UDP/TCP/TLS/SCTP, currently Most commonly used
TCP. ( )
H.323 is used to provide multimedia services in packet-switched networks. ( )
In video systems, anti-packet loss algorithms mainly include forward error correction FEC and packet loss retransmission AQR.
The function of the registration server is to map the addresses in the request to zero or more new addresses and then return them to the client.
From the logs captured above, you can see the reason for the call failure. ( )
The 245.H.460 protocol specifies that the public-private network traversal processing process for the H.323 media streaming portion is ( ).