Why is this call failing?

Use the router console to view the configuration and answer the question.


Emergency calls from a Branch router phone is failing. From the router configuration information provided, why is this call failing?
A. The dial-peer port assignment is incorrect
B. the digit string prefix is missing
C. The destination pattern is incorrect
D. digit stripping needs to be performed

Correct Answer: C
Explanation/Reference:
The emergency dial peer configuration is shown below from the Branch routers:

Here we can see that 911 does not actually match the configured destination patterns.