Speech enhancement technology Jitter Buffer is the use of a human intervention signal wave, to eliminate the echo signal generated during the communication process, while retaining other normal voice signals, in order to achieve the normal communication Use. ( )

The SIP protocol is an application-layer protocol.

Capability Negotiation is primarily used to declare the ability to receive and send supported by this side.
Declare the preferred capability set at this end, and the other party needs to prioritize the use of this capability set.

What does the response message "1xx" in the SIP protocol mean?

The role of the LAN2 port of the HD terminal ().