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Question 61 - 350-801 discussion
An engineer must extend the corporate phone system to mobile users connecting through the internet with their own devices. One requirement is to keep this as simple as possible for end users.
Which infrastructure element achieves these goals?
A.
Cisco Expressway-C and Expressway-E
B.
Cisco Unified Instant messaging and presence
C.
Cisco Unified Border Element
D.
Cisco Express Mobility
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