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300-815 · Question #38

Refer to the exhibit. Calls incoming from the provider are not working through newly set up Cisco Unified Border Element. Provider engineers get the 404 Not Found SIP message. Incoming calls are comin

The correct answer is B. Set up translation-profile on the incoming dial peer to match incoming traffic.. Option B is correct because the called number must be transformed from "222333444" to "444333222" before CUBE forwards the call to CUCM - a voice translation-profile applied to the incoming dial peer with a translate called directive is exactly how CUBE intercepts and rewrites th

Cisco Unified Border Element

Question

Refer to the exhibit. Calls incoming from the provider are not working through newly set up Cisco Unified Border Element. Provider engineers get the 404 Not Found SIP message. Incoming calls are coming from the provider with called number "222333444" and Cisco Unified Communications Manager is expecting the called number to be delivered as "444333222". The administrator already verified that the IP address of the Cisco Unified CM is set up correctly and there are no dial peers configured other than those shown in the exhibit. Which action must the administrator take to fix the issue?

Exhibit

300-815 question #38 exhibit

Options

  • AChange the destination-pattern on the outgoing dial peer to match "444333222".
  • BSet up translation-profile on the incoming dial peer to match incoming traffic.
  • CCreate specific matching for "222333444" on the incoming dial peer.
  • DFix the voice translation-rule to match specifically number "222333444" and change it to "444333222".

How the community answered

(30 responses)
  • A
    3% (1)
  • B
    73% (22)
  • C
    7% (2)
  • D
    17% (5)

Explanation

Option B is correct because the called number must be transformed from "222333444" to "444333222" before CUBE forwards the call to CUCM - a voice translation-profile applied to the incoming dial peer with a translate called directive is exactly how CUBE intercepts and rewrites the called number at the point of ingress. Without this, CUCM receives an unrecognized number and returns 404.

A is wrong because changing the destination-pattern on the outgoing dial peer affects which calls match that peer, not the called number value that gets delivered to CUCM - the digit mismatch remains.

C is wrong because adding a specific match pattern on the incoming dial peer improves call selection/routing, but does nothing to translate the digits; CUCM still receives "222333444."

D is wrong because even a perfectly written voice translation-rule is completely inert until it is assigned to a voice translation-profile and that profile is applied to a dial peer - the rule alone cannot fire.

Memory tip: Think of it as a pipeline - translation-rule defines the substitution logic, translation-profile packages it, and the dial peer application (translation-profile incoming/outgoing) pulls the trigger. If any link is missing, no translation happens. The incoming dial peer is the right attachment point when the provider is sending the wrong format inbound.

Topics

#CUBE translation profiles#incoming dial peer#number translation#inbound call processing

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