Refer to the exhibit. Cisco Unified Border Element is attempting to establish a call with Subscriber 1, but the call fails. Cisco Unified Border Element then retries the same call with Subscriber 2…

The correct answer is A. Verify that the Run On All Active Unified CM Nodes checkbox is enabled. Run On All Unified CM Nodes allows Subscribers NOT configured within the Call Manager Group that is applied to Route Lists and/or SIP Trunks to process calls. There is a whole rabbit whole with how this feature works when only applied to one or the other but per best practice…

Voice Gateways and Session Border Controllers

Question

Refer to the exhibit. Cisco Unified Border Element is attempting to establish a call with Subscriber 1, but the call fails. Cisco Unified Border Element then retries the same call with Subscriber 2, and the call proceeds normally. Which action resolves the issue?

Exhibit

Options

AVerify that the Run On All Active Unified CM Nodes checkbox is enabled.
BVerify that the correct calling search space is selected for the Inbound Calls section.
CVerify that the Significant Digits field for Inbound Calls is set to All.
DVerify that the PSTN Access checkbox is enabled.

How the community answered

(38 responses)

A
82% (31)
B
5% (2)
C
11% (4)
D
3% (1)

Explanation

Run On All Unified CM Nodes allows Subscribers NOT configured within the Call Manager Group that is applied to Route Lists and/or SIP Trunks to process calls. There is a whole rabbit whole with how this feature works when only applied to one or the other but per best practice, unless there is a VERY specific reason, you want this check box enabled on ALL Route Lists and SIP Trunks.

Topics

#CUBE#SIP Trunk Configuration#CUCM Redundancy#Call Failure Troubleshooting

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