Which configuration element must the engineer check to determine the cause?

An engineer is modifying a dial plan for a Cisco Unified Communications Manager system and notices that the new route patterns are not properly manipulating the dial string. Which configuration element must the engineer check to determine the cause?
A. phone
B. route list
C. dial peer
D. phone DN

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8 thoughts on “Which configuration element must the engineer check to determine the cause?

  1. Answer is B. If there are transforms on the route list they will take precedence to the transforms on the Route Pattern

  2. C : because of the routepattern can select h323 gateway and then the dial peer 😉
    The rest you can not manipulate a called number so C is the most matching answer.

    1. How do you know that they’re not using a MGCP gateway? With a MGCP gateway you can select the specific port to use for outbound calls and no dial peers are used. So since you don’t know if it is MGCP or H.323, checking the route list to verify the proper route groups are used makes the most sense. I still got to go with B on this one.

  3. Correct Answer is B.

    It can’t be C because dial peers are for gateways and route patterns are for CUCM. “An engineer is modifying a dial plan for a Cisco Unified Communications Manager system”

    A route list itself cannot manipulate a dial string but the route group(s) that are assigned to the route list can manipulate a dial string. Since the route pattern is not an answer, you’d check the route list to verify that the correct route groups that contain the digit manipulation are associated with the route list. (Remember, a route pattern contains a route list which contains route groups)

    The phone and phone DN cannot manipulate a dial string so A and D are out. (In the real world I’d probably start by verifying that the phone CSS and phone DN CSS contain the partition for the route pattern so that they’re able to dial the pattern and also that they aren’t hitting a different, possibly more specific, route pattern. But that’s getting a bit too specific for this question)

  4. I think is B Because the question never reference to the Gateaway, Just CUCM. And on CUCM Route List is the only item that contain Digit manipulation

  5. I think the best answer is C.
    Dial peers allow calls to be received from VoIP or POTS at voice gateways and for sending calls from voice gateways to destination devices/trunks.

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