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350-030 - CCIE Voice Written Exam
Which statement correctly describes symmetric signaling in SIP?
SIP devices use the same listening port for all incoming SIP messages.
SIP devices send and receive SIP messages at the same time.
SIP devices send SIP traffic to the same IP address and port number of an upstream element.
SIP devices use the same source port for SIP messages.
SIP devices use the same port number for sending and receiving SIP messages.
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