Which term describes a pattern used to adjust dialed digits to a common format before routing?

Which term describes a pattern used to adjust dialed digits to a common format before routing?

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

Answer: (C)

Digit normalization of dialed numbers is accomplished with a Translation Pattern. This type of pattern matches the digits a user dials and rewrites them into a standard format before the call is routed. By defining how many digits to match and how to transform them—such as removing a leading digit, adding a prefix, or converting to a full E.164 style—you ensure all calls use a consistent number format for routing. For example, if users dial 9 before an outside line, a translation pattern can strip that leading 9 and optionally prepend a country or trunk prefix so the resulting digits match the route pattern you’ve configured for the external gateway. This digit transformation happens before the system selects a route, ensuring uniform routing decisions across different dialing habits. The other options don’t perform this digit rewriting. Route patterns specify what numbers match a particular route; route lists group multiple routes for call processing; line groups gather endpoints. They handle where a call goes, not how the dialed numbers are normalized.

Digit normalization of dialed numbers is accomplished with a Translation Pattern. This type of pattern matches the digits a user dials and rewrites them into a standard format before the call is routed. By defining how many digits to match and how to transform them—such as removing a leading digit, adding a prefix, or converting to a full E.164 style—you ensure all calls use a consistent number format for routing.

For example, if users dial 9 before an outside line, a translation pattern can strip that leading 9 and optionally prepend a country or trunk prefix so the resulting digits match the route pattern you’ve configured for the external gateway. This digit transformation happens before the system selects a route, ensuring uniform routing decisions across different dialing habits.

The other options don’t perform this digit rewriting. Route patterns specify what numbers match a particular route; route lists group multiple routes for call processing; line groups gather endpoints. They handle where a call goes, not how the dialed numbers are normalized.