Users of a phone system often need to reach various destinations, such as extensions within the same site, different sites (sometimes with different dialing plans) within the same company, and other companies within the same country or in different countries. Because these calls can take different paths, such as the IP WAN or a preferred public switched telephone network (PSTN) carrier, completing the calls often requires dialing various access codes, numbers of digits, or prefixes. In addition, restricting certain destinations, such as 900 numbers, is often prudent.
To require users to understand the specific dialing patterns that are necessary to reach these various destinations is impractical and inconvenient. Digit manipulation, or the ability of Cisco Unified Communications Manager (CUCM) to add or subtract digits to comply with a specific internal dial plan or national numbering plan, is important to providing transparent dialing and to creating a unified dialing plan for end users.
Gateway selection and calling privileges are also important dial plan components. Calling privileges are used to implement class of service (CoS). Based on the calling device or line, some destinations are permitted to access call-routing table entries; others are not. Implementation applications include time-of-day routing, vanity numbers, Client Matter Codes (CMC), and Forced Authorization Codes (FAC).
This course describes the digit-manipulation tools that allow a CUCM Administrator to implement flexible and transparent dial plans. The course also describes external phone number masks, digit prefix and stripping, transformation masks, translation patterns, incoming called- and calling-party settings, called and calling transformation patterns, and significant digits. Finally the configuration tools that can be used to implement calling privileges and their different usage scenarios are also discussed.Learning Objectives
- Match the digit-manipulation elements to their characteristics
- Describe how to use external phone number masks in Cisco Unified Communications Manager
- Identify the key features of translation patterns
- Describe the characteristics of transformation masks in Cisco Unified Communications Manager
- Describe how to strip and prefix digits in Cisco Unified Communications Manager
- Describe the characteristics of significant digits configuration
- Describe the characteristics of Cisco Unified Communications Manager Global Transformations
- Describe how incoming number prefixes are used in Cisco Unified Communications Manager
- Configure digit manipulation using route lists
- Recognize applications for calling-privileges
- Describe how time schedules operate
- Describe how time periods operate
- Describe the reasons for gateway selection
- Match the methods of CoS implementation to their descriptions
- Sequence the steps to implement vanity numbers in Cisco Unified Communications Manager
- Specify the best way to implement carrier selection based on the time of day in a given scenario
- Distinguish between the operations of CMC and FAC
- Describe CMC and FAC implementation
- Configure Forced Authorization Codes