Digit Manipulation
The two primary methods for digit manipulation are translation patterns and transformation patterns. Translation patterns can be configured in the Cisco Unified Communications Manager to manipulate digits for any type of call. Translation patterns follow the same general rules and use the same wildcards as route patterns. As with route patterns, translation patterns are assigned to a partition. However, when the dialed digits match the translation pattern, the Cisco Unified Communications Manager does not route the call to an outside entity such as a gateway; instead, it performs the translation first and then routes the call again, this time using the calling search space configured within the translation pattern.
Transformation patterns determine how the system manipulates the digits that were dialed in an incoming or outgoing call. Transformation patterns are configured when the calling or called number needs to be changed before the system sends it to the phone or the PSTN. You can use transformation patterns to discard digits, prefix digits, add a calling party transformation mask, and control the presentation of the calling party number. Consider the following transformation pattern associations with calling search spaces (CSS):
Associate a calling party transformation pattern with a called party transformation CSS.
Associate a called party transformation pattern with a calling party transformation CSS.
Translation Patterns
For each translation pattern that you create, ensure that the combination of partition, route filter, and numbering plan is unique. If you receive an error that indicates duplicate entries, check the route pattern or hunt pilot, translation pattern, directory number, call park number, call pickup number, or meet-me number configuration windows. Configure translation patterns to apply digit manipulations to the calling and called numbers when the dial string matches the pattern. The system completes the digit translation and then reroutes the call. Use the following steps to configure translation patterns on the Cisco Unified Communications Manager.
Step 1. From Cisco Unified CM Administration, navigate to Call Routing > Translation Pattern.
Step 2. Choose one of the following options:
Click Add New to add a new translation pattern.
Click Find and select an existing translation pattern.
Step 3. In the Translation Pattern field, enter the pattern that you want the system to match to dial strings that use this pattern.
Step 4. From the Partition drop-down list, select the partition where you want to assign this pattern.
Step 5. Complete the remaining fields in the Translation Pattern Configuration window. For more information on the fields and their configuration options, see the system’s Online Help.
Step 6. Click Save.
Transformation Patterns
There are three main steps to configuring transformation patterns in the Cisco Unified Communications Manager. You can configure calling party transformation patterns to transform the calling number. For example, you can configure a transformation pattern that replaces a caller’s extension with the office’s main number when calling the PSTN. You also can configure called party transformation patterns to transform the called number. For example, you can configure a transformation pattern that retains only the last five digits of a call dialed as a ten-digit number. Optionally, you can configure transformation profiles, but you should use this procedure only if you are using Cisco Intercompany Media Engine (Cisco IME). You must configure a transformation profile to convert dialed numbers into the E.164 format. Use the following steps to configure transformation patterns on the Cisco Unified Communications Manager:
Step 1. Configure calling party transformation patterns:
From Cisco Unified CM Administration, navigate to Call Routing > Transformation > Transformation Pattern > Calling Party Transformation Pattern.
Choose one of the following options:
Click Add New to add a new calling party transformation pattern.
Click Find and select an existing pattern.
From the Pattern field, enter the pattern that you want to match to the calling party number.
Complete the remaining fields in the Calling Party Transformation Pattern Configuration window. For more information on the fields and their configuration options, see the system’s Online Help.
Click Save.
Step 2. Configure called party transformation patterns:
Navigate to Call Routing > Transformation > Transformation Pattern > Called Party Transformation Pattern.
Choose one of the following options:
Click Add New to add a new called party transformation pattern.
Click Find and select an existing pattern.
From the Pattern field, enter the pattern that you want to match to the called number.
Complete the remaining fields in the Called Party Transformation Pattern Configuration window. For more information on the fields and their configuration options, see the system’s Online Help.
Click Save.
Step 3. Configure transformation profiles. Perform this procedure only if you are using Cisco Intercompany Media Engine (Cisco IME). You must configure a transformation profile to convert dialed numbers into the E.164 format. The E.164 format includes the international + prefix; for example, +14085551212.
Navigate to Call Routing > Transformation > Transformation Profile.
Choose one of the following options:
Click Add New to add a new transformation profile.
Click Find and choose a pattern from the resulting list to modify the settings for an existing transformation profile.
The Transformation Profile Configuration window appears. Configure the fields in the Transformation Profile Configuration window. For more information on the fields and their configuration options, see the system’s Online Help.
Click Save.
Exam Preparation Tasks
As mentioned in the section “How to Use This Book” in the Introduction, you have a couple of choices for exam preparation: the exercises here, Chapter 32, “Final Preparation,” and the exam simulation questions in the Pearson Test Prep Software Online.