Which two items are configured when deploying a B2B collaboration solution? (Choose two.)

Question

Options

• ASIP trunk between Cisco Unified Communications Manager and Cisco Expressway-C
• Bsearch rules in Cisco Expressway-E
• CSIP trunk between Cisco Unified Communications Manager and Cisco Expressway-E
• Dtraversal client on a Cisco Expressway-E
• EDNS zone on a Cisco Expressway-C

• A
  74% (25)
• C
  15% (5)
• D
  3% (1)
• E
  9% (3)

Explanation

In a B2B collaboration deployment, two key items are required. First (A), a SIP trunk is configured between CUCM and Expressway-C - CUCM sends and receives B2B calls via Expressway-C, which acts as the internal proxy. CUCM never connects directly to Expressway-E. Second (B), search rules are configured on Expressway-E to route inbound B2B calls received from the Internet to the appropriate destination (typically back through the traversal zone to Expressway-C and then to CUCM). Choice C is incorrect because CUCM trunks to Expressway-C, not Expressway-E. Choice D is incorrect because Expressway-E acts as the traversal server, not the traversal client (Expressway-C is the traversal client). Choice E is incorrect because a DNS zone would be on Expressway-E to resolve external SIP URIs, not on Expressway-C.

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