How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

Question

Options

• Aadd the specific URI in the firewall section of the Expressway and block it
• Bblock the call with a call policy rule in the Expressway-E
• Cadd a search rule route all calls to the Cisco UCM
• Dconfigure FAC for the destination alias on the Expressway

• A
  11% (6)
• B
  80% (43)
• C
  6% (3)
• D
  4% (2)

Explanation

Expressway-E supports Call Policy, implemented using CPL (Call Processing Language) rules. These rules can match specific destination aliases (URIs, IP addresses, etc.) and block or reject calls before they are routed inward. Since Expressway-E is the border element facing external callers, blocking at this point is the correct and effective approach. Expressway does not have a 'firewall section' for URI blocking (A), FAC (Feature Access Codes) is a UCM concept unrelated to Expressway routing (D), and simply routing calls to UCM does not block them (C).

No community discussion yet for this question.