The SIP user and the server are completed the establishment, maintenance, and removal of a voice path through a series of message interactions. Therefore, each information contained in the SIP text is one-to-one, and there will be no single information values appears multiple times.

The SIP user and the server are completed the establishment, maintenance, and removal of a voice path through a series of message interactions. Therefore, each information contained in the SIP text is one-to-one, and there will be no single information values appears multiple times.
A . Ture
B . False

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Answer: B