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InterviewSolution
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What Is The Significance Of Invite Message? |
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Answer» The INVITE METHOD is used to establish media SESSIONS between user agents. An INVITE usually has a message body CONTAINING the media information of the caller. If an INVITE does not contain media information, the ACK CONTAINS the media information of the UAC. If the media information contained in the ACK is not acceptable, then the called party must send a BYE to cancel the session—a CANCEL cannot be sent because the session is already established. The INVITE method is used to establish media sessions between user agents. An INVITE usually has a message body containing the media information of the caller. If an INVITE does not contain media information, the ACK contains the media information of the UAC. If the media information contained in the ACK is not acceptable, then the called party must send a BYE to cancel the session—a CANCEL cannot be sent because the session is already established. |
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