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seenagapeMay 25, 2016

Which of the following operates as a SIP back-to back user agent?

A.
Cisco TelePresence codec

B.
Cisco TelePresence Multipoint Switch

C.
Cisco Unified Cornmunic3tions Manager

D.
SIP gateway that is used to access the PSTN

E.
H.323 gateway

In 642-278Exam 642-278

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