Dial plan mapping samples

This topic provides sample Dial Plan Mapping to assist you in configuring dial plans for Message Networking remote machines.

Before administering Dial Plan Mapping for the remote machines on the Message Networking system, you must obtain the extension ranges, area code, and prefixes for the remote machines. You should also identify any extensions for which mailboxes do not exist (such as automated attendants) and any extensions within the ranges that are used by another remote machine using the same prefix on the Message Networking network.

Sample 1: Single unbroken range of mailbox IDs

In this sample, there is a single unbroken mailbox ID range, 2000 to 5999 that is added as an Mailbox ID range for this remote machine. To create the 10-digit mailbox IDs required, you must:

• Leave the Map From field for this range blank since you want to add the same numbers to the beginning of every mailbox ID to create the network addresses.
• In the Map To digits, enter the area code and local exchange 3-digit prefix for the remote machine. In this sample, an area code used is 303, and the 3-digit prefix used is 555. Therefore, 303555 is entered in the Map To field.

The result of this sample mapping is that the Map To digits, 303555, are added to the beginning of the 4-digit mailbox ID to create 10-digit mailbox IDs ranging from 3035552000 to 3035555999.

This same sample could be used to create a network address of any length. For example, if the Message Networking system requires 7-digit network addresses, the Map To entry would be three digits instead of the six digits shown in the sample.

Sample 2: Broken ranges of mailbox IDs with a Map From of 0

In this sample, the following broken mailbox ID ranges are each added as extension ranges for the Dial Plan Mapping:

• 2000 to 2999
• 3000 to 3999
• 5000 to 5499
• 5800 to 5999

The ranges 4000 to 4999 and 5500 to 5799 are omitted. Ranges should be omitted when:

• The range contains auto-attendant mailboxes or other extensions for which mailboxes have not been assigned.
• Another messaging system, which uses the same prefix as this system, uses the mailbox ranges 4000 to 4999 or 5500 to 5799.

The following table lists the mailbox ID ranges and the corresponding Map From and Map To digits.

In this sample, you can use a Map From entries of one digit, which should be the first digit in the mailbox ranges. You do not need to create a separate mapping for each of the ranges that begin with 5, since a single dial plan mapping with a Map From of 5 will match both ID ranges.

The result of this sample mapping is that the first number of each mailbox ID in the range is replaced by the Map To digits that correspond to the matching Map From entry. For example, for the first extension range (2000 to 2999), the first digit (2) matches the dial plan mapping with a Map From entry of 2. In this case, the digit in the Map From entry (2) is removed from the mailbox ID, and the Map To digits (3035552) are added to the beginning of the mailbox IDs to create a range of 10-digit network addresses from 3035552000 to 3035552999. The Message Networking does not change the mailbox IDs not included in the extension ranges.

Note that in the sample if the extensions 5500 to 5799 are not omitted from the Mailbox ID ranges and a range of 5000 to 5999 is entered, the Map From entry must be two digits to allow the exclusion of the extensions in the 5500 to 5799 range. Because the number of digits in the Map From field must be the same for all entries for a remote machine, this scenario would require many more dial plan mappings to create the same results as the sample shown. An example of this scenario is shown in Sample 4.

Sample 3: Ranges that require different prefixes

In this sample, the following broken mailbox ID ranges are each added as extension ranges for the Dial Plan Mapping:

• 2000 to 2999
• 3000 to 3999
• 5000 to 5999

One of the mailbox ID ranges (5000 to 5999) requires a different Map To prefix.

The following table lists the mailbox ID ranges and the corresponding Map From and Map To digits.

The result of this sample mapping is that the first number of each mailbox ID range is replaced by the Map To digits for that range. For example, for the first extension range (2000 to 2999), the first digit (2) is removed and the Map To digits (5552) are added to the beginning of the mailbox IDs to create a range of 7-digit network addresses from 5552000 to 5552999. For the third extension range (5000 to 5999), the first digit (5) is removed and the Map To digits (5515) are added to the beginning of the mailbox IDs to create a range of network addresses from 5515000 to 5515999.

Sample 4: Ranges with different prefixes and shared Start digits

In this sample, the system has two mailbox ID ranges with the same initial digit (5), but their DID prefixes are different and must be differentiated in the dial plan. Also, because entries in the Map From field must be unique, you must use two Map From digits.

The mailbox ID ranges for this sample are as follows:

• 2000 to 2999
• 3000 to 3999
• 5000 to 5499
• 5500 to 5999

You must enter a separate mailbox ID range for each set of extensions that have the same two Start numbers. For example, you must break down the 2000 to 2999 mailbox ID range into separate ranges based on the first two numbers in the ID (2000 to 2099, 2100 to 2199, and so on).

The following table lists the mailbox ID ranges and the corresponding Map From and Map To digits.

The result of this sample mapping is that the first two numbers of each mailbox ID range is replaced by the Map To digits for that range. For example, for the first extension range (2000 to 2099), the first two digits (20) are removed, and the Map To digits (30355520) are added to the beginning of the mailbox IDs to create a range of 10-digit network addresses from 3035552000 to 3035552999. For the fourth extension range (5500 to 5599), the first two digits (55) are removed, and the Map To digits (72055155) are added to the beginning of the ranges mailbox IDs to create a range of 10-digit network addresses from 7205515000 to 7205515999.

Sample 5: Prefixes replaces initial mailbox digits

In this sample, there are broken Mailbox ID ranges, and the two ranges have different Map To prefixes. Additionally, the mailbox IDs are part of a 5-digit Uniform Dial Plan across two switches so that the initial digits of the mailbox IDs overlap the final digits of the telephone number prefixes. In this case, the dial plan map will replace the initial digits of the mailbox ID ranges with a different digit.

The mailbox ID ranges for this sample are as follows:

• 20000 to 29999
• 50000 to 59999

The following table lists the mailbox ID ranges and the corresponding Map From and Map To digits.

In this sample, the first digit in the mailbox ID is replaced by the local area code and prefix to create the 10-digit mailbox ID required on the Message Networking system. For example, a mailbox in the first range might be 21333, but its external phone number would be 303-555-1333. So the Dial Plan Mapping is configured to replace the first digit in the mailbox ID (2) with the local area code and prefix (303555).

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