Of the messages between GKs, a/an ( ) message is sent by the called terminal to the calling terminal to indicate that the called terminal is off-hook.
Relationship between the camera and background, Why the background cannot be multifarious. (Select 2 answers)
Of the messages between GKs, a/an ( ) message is sent by the called terminal to the calling terminal to indicate that the called terminal is off-hook.
For Basic request messages, ( ) is used for querying the SIP server capabilities.
The IP header in a SETUP message does not contain the following ( ). (Select 2 answers)
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