A company has a traversal client that resides in the DMZ in the enterprise network and has a requirement for B2B calling. Which Cisco Collaboration Edge component addresses this requirement?

The correct answer is C. Cisco Expressway-E. Cisco Expressway-E is the component that sits at the network edge (typically in the DMZ or with a public-facing interface) and handles Business-to-Business (B2B) calling to and from the Internet. It acts as the traversal server for the Expressway-C traversal client on the…

Cisco Expressway for Collaboration

Question

Options

ACisco Expressway-C
BCisco TelePresence ISDN gateway
CCisco Expressway-E
DCisco Unified Border Element

How the community answered

(37 responses)

A
3% (1)
B
3% (1)
C
89% (33)
D
5% (2)

Explanation

Cisco Expressway-E is the component that sits at the network edge (typically in the DMZ or with a public-facing interface) and handles Business-to-Business (B2B) calling to and from the Internet. It acts as the traversal server for the Expressway-C traversal client on the internal network, and it also peers directly with external SIP domains for B2B federation. Expressway-C (choice A) is the internal component that connects to CUCM - it does not face the Internet. The ISDN gateway (choice B) is for PSTN/ISDN connectivity, not B2B SIP. Cisco Unified Border Element (choice D) is a SIP trunking gateway for PSTN interconnects and interoperability, not the primary Collaboration Edge component for B2B calling via Expressway.

Topics

#Cisco Expressway-E#DMZ#B2B Calling#Collaboration Edge

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