Network segment bandwidth limitations can cause endpoints to fail to register GKs . ( )
The Network Diagnostic Tool supports initiating diagnostic tests from the Public Network to the Private Network Diagnostic Tool.
Extended request message UPDATE , which is used to modify session properties during the call setup phase. ( )
During a point-to-point number call, the called terminal does not send a call request to GK until it receives setup signaling.
Color temperature represents the most general indicator of the spectral quality of a light source in lux (Lux , lx ). ( )
The color rendering index affects the reproducibility of the image, and when the color rendering index is low, the color of the image will deviate greatly from the original image. ( )
The color temperature is defined by the absolute black body, the radiation of the light source in the visible region and the radiation of the absolute black body are exactly the same, at this time the Kelvin
temperature of the black body is called the color temperature of this light source. ( )
The opening process of the logical channel in the H323 protocol follows the principle of "who transmits, who opens". ( )
A SIP message consists of a start-line header, a header consisting of one or more fields (riold), and a blank line that marks the end of the header ( CRLF) and as an optional message body (message
boby) consists of. ( )
At the heart of the NAT mapping is the modification of the destination address of the datagram header. ( )
When the MCU is operating in wall riding mode, GE0 and GE1 must be in two different network segments, and all board GE0 (or GE1) must be in the same network segment.
A CANCEL transaction can only be received after receiving an ad hoc response from INVITE (including 100 ). The final response is sent before. ( )
When sending and receiving T.140 subtitles, both parties who need to join support T.140 subtitles.
The RTCP protocol can be freely controlled by SDES grouping, with RTCP SDES marking members away from the session, or members changing SSRC.
RTCP can ensure the transmission quality well through RR, and each participant who receives data must send a RR.
