Cisco 400-051 Exam

Refer to the exhibit. Which two statements about the show command output are true? (Choose two.)

  • A. T1 0/2/1 terminates Q.921 signaling to a Cisco Unified Communications Manager server.
  • B. T1 0/0/0 terminates Q.921 signaling on the gateway.
  • C. T1 0/0/0 terminates SIP Signaling to a Cisco Unified Communications Manager server.
  • D. T1 0/0/0 terminates Q.931 signaling to a Cisco Unified Communications Manager server.
  • E. T1 0/2/1 terminates Q.931 signaling on the gateway.
Answer: Option B. D.
Explanation: 

As you can see the T1 0/0/0:23 interface is active in layer 1,2(multi frame established) & 3,it means Q.931 signaling terminates at gateway and using backhauled technique q931 messages are going to CUCM server.
But in case of T1 0/2/1 port multi frames are not established in layer 2.So, it’s not configured properly & doesn’t backhauling q931 messages to CUCM

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