A user dials 912085551234. Which pattern type is best used?

• A. Hunt List
• B. Line Group
• C. Translation Pattern
• D. Route Pattern

Answer: (D)

When a user dials a number that starts with an outside-line prefix, you route that call by using a route pattern. Route patterns tell CUCM how to map the dialed digits to a specific outbound trunk or gateway. In this example, the digits begin with a prefix (9) used to get an outside line, followed by the actual number. A route pattern configured to match that dialing style will send the call to the appropriate PSTN route.

The other pattern types don’t fit this purpose as well. A hunt list is for distributing calls across multiple extensions in a hunt group, not for selecting an outbound path. A line group is about sharing lines among devices, not about routing to the PSTN. A translation pattern modifies the digits themselves (for example, removing a prefix or changing digits) but you still need a route pattern to specify where the call should go after matching the dialed digits.