What are two key features of the Expressway series? (Choose two.)

The correct answer is B. B2B calls D. Device registration over the internet. Cisco Expressway-E and Expressway-C together provide two primary functions: (B) Business-to-Business (B2B) calls, enabling SIP/H.323 federation with external organizations across the internet without a VPN; and (D) Device registration over the internet via Mobile and Remote…

Edge Services

Question

Options

AVPN connect toward the internal UC resources
BB2B calls
CIP to PSTN call connectivity
DDevice registration over the internet
ESIP header modification

How the community answered

(54 responses)

A
2% (1)
B
93% (50)
C
2% (1)
E
4% (2)

Explanation

Cisco Expressway-E and Expressway-C together provide two primary functions: (B) Business-to-Business (B2B) calls, enabling SIP/H.323 federation with external organizations across the internet without a VPN; and (D) Device registration over the internet via Mobile and Remote Access (MRA), allowing endpoints to register to on-premises Cisco UCM from outside the corporate network without a VPN client. Expressway does NOT use a VPN toward internal UC resources (Choice A) - it uses firewall traversal. IP-to-PSTN connectivity (Choice C) is a CUBE function. SIP header modification (Choice E) is not a defining Expressway feature.

Topics

#Cisco Expressway#Mobile and Remote Access#B2B Calling#External Collaboration

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