Chapter 11: Cisco Unified CallManager Advanced Route Plans

Cisco Press

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Tip - Many new Cisco CallManager administrators get the translation and transformation terms confused. Cisco CallManager allows you to create translation patterns that contain both calling- and called-party transformation masks to modify the caller ID or dialed-number information. Translation patterns are usually used to transform dialed digits, so the called-party transformation masks are more frequently used.


Figure 11-12

Figure 11-12

Translation Pattern Configuration Window

Practical Use of a Translation Pattern

Figure 11-13 shows an application for translation patterns. When the Direct Inward Dial (DID) range from the CO does not match the internal DN range, you can use a translation pattern to make the connection.

Figure 11-13

Figure 11-13

Practical Translation Pattern Example

In Figure 11-13, a company has a PSTN DID range of 408-555-1xxx. However, all of the internal four-digit extensions begin with 4xxx. When the company receives an incoming call, the company could use DDIs to remove the 555 from the beginning of the number. However, the 1xxx extension still remains. Instead, the translation pattern could apply a 4XXX called-party transformation mask. This mask would convert the 1xxx external DID range to a 4xxx internal range. After Cisco CallManager applies the transformation mask, it reanalyzes the dialed number and directs it to the correct internal extension. So, to summarize (and simplify), the following configuration would be created:

Translation Pattern: 4085551XXX

Called-Party Transformation Mask: 4XXX

Resulting Phone Number: 4XXX

If a call came into the DID 4085551111, CallManager would convert the dialed digits to 4111.

Route Plan Report

The route plan report is a listing of all the Call Park numbers, Call Pickup numbers, conference numbers (such as Meet-Me numbers), route patterns, and translation patterns in the system. The route plan report allows you to view either a partial or full list and go directly to the associated configuration windows. You can accomplish this by selecting a route pattern, partition, route group, route list, Call Park number, Call Pickup number, conference number, or gateway.

The route plan report allows you to save report data into a comma-separated values (CSV) file that you can import into other applications (such as Microsoft Excel). The CSV file contains more detailed information than the web pages, including DNs for phones, route patterns, and translation patterns.

To generate a route plan report, use the Route Plan > Route Plan Report selection. The Route Plan Report window shown in Figure 11-14 appears. From here, you can either generate a route plan report to view in the web interface or click the View in File hyperlink to download the route plan as a CSV file.

Figure 11-14

Figure 11-14

Generating a Route Plan Report

Summary

This chapter covered the design and configuration of an advanced Cisco CallManager route plan. The concepts started by using the route filter configurations to screen the 9.@ NANP route pattern. By default, the @ wildcard includes numbers that might be undesirable for a corporate entity. By using route filters, you can limit the number of patterns that are added when creating a PSTN dial-plan using the @ wildcard.

You can also use discard digit instructions (DDIs) to manipulate the digits sent to a destination, especially the PSTN. Most corporations have a number that is dialed (such as 9) to indicate an outside PSTN call. You can use DDIs to strip this access code before the call leaves to the PSTN. You can use DDIs in a number of circumstances to properly transform incoming or outgoing calls, many of which are seen in Chapters 12-14.

You can use calling- and called-party transformations to change caller ID information (calling) or dialed digits (called). These masks give you complete flexibility to transform this information however you see fit. Because you can apply them at nearly every level of the CallManager route plan, you can make differing modifications to dialed-number information depending on the gateway the CallManager decides to use to route the call. Translation patterns can also be added to the route plan for last resort modifications using calling- or called-party transformations.

Review Questions

You can find the solutions to these questions in Appendix A, "Answers to Review Questions."

  1. What does Cisco CallManager do when dialed digits pass through a translation pattern?

    1. extends the call to the destination

    2. forwards the call to a route pattern

    3. selects the closest match to that pattern

    4. sends the transformed digits through digit analysis one more time

  2. When DN 1111 calls and a calling transformation mask of 972555XXXX is applied, which CLID is sent?

    1. 1111

    2. 5551111

    3. 9725551111

    4. 19725551111

  3. What are the final digits that Cisco CallManager sends when the discard digits instruction PreDot is applied to the 9808.5550150 pattern?

    1. 98085550150

    2. 5550150

    3. 95550150

    4. 8085550150

  4. You have created a route filter called "Match 900 numbers" where you have defined a condition, "AREA-CODE == 900". What must you do to put this route filter into effect?

    1. You need to apply the route filter to a route pattern and select the allow or deny action.

    2. You need to apply the route filter to a route list and select the allow or deny action.

    3. You need to create a transformation pattern.

    4. Nothing needs to be done; the route filter takes effect as soon as it is inserted into the configuration.

  5. You apply the DDI 11D@10D to the route pattern 16025551212. What digit(s) are discarded?

    1. 1

    2. 1602

    3. 1602555

    4. 555

  6. You are editing the properties for the 9.@ route pattern. You apply a calling-party transformation mask of 8. What does this accomplish?

    1. The dialed digits are prefixed with an 8.

    2. The caller ID information is prefixed with an 8.

    3. The dialed digits are transformed into an 8.

    4. The caller ID information is transformed into an 8.

  7. What information does a called-party transformation mask modify?

    1. the long-distance code information

    2. the dialed-digit information

    3. the caller ID information

    4. It depends where the mask is applied.

  8. You apply a prefix digit of 99 and a calling-party transformation mask of 555XXXX under a PSTN route pattern. A user at extension 5123 dials a PSTN number; what information is displayed for the caller ID information on the external phone?

    1. 555

    2. 99555

    3. 5555123

    4. 995555123

    5. 5559912

  9. You have created a route pattern of 4xxx to reach extensions in another CallManager cluster. To properly forward the number, you have added a prefix-digit transformation of 8. In addition, you created a translation pattern of 8.xxxx that applies a PreDot DDI. What dialed-number information does the Cisco CallManager forward?

    1. The dialed digits will forward to the other side as 4xxx.

    2. The dialed digits will forward to the other side as 84xxx.

    3. The dialed digits will forward to the other side as xxx.

    4. The CallManager will play a fast busy signal.

  10. Which transformation changes caller ID information?

    1. translation patterns

    2. calling-party transformations

    3. called-party transformations

    4. route patterns

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