In the central networking mode of the converged conference MCU, what is correct about the traversal of public and private networks? () (Multiple selected)

In the central networking mode of the converged conference MCU, what is correct about the traversal of public and private networks? () (Multiple selected)A . TE/RP/TP access MCU through SC proxy signaling and media streamB . eSpace Mobile accesses MCU C through SBC proxy audio and video media.C . External web client access MCU...

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Phone A has been successfully registered to the U1900 system. At some point, unplug the network cable. At this time, log in to the U1900 system to check the registration status of phone A. The following statement is wrong ()

Phone A has been successfully registered to the U1900 system. At some point, unplug the network cable. At this time, log in to the U1900 system to check the registration status of phone A. The following statement is wrong () A. The registration status of phone A in the U1900 system may change immediately...

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