Configuring direct inward dialing

The Call Routing > Inbound > DID Mapping submenu lets you configure how to map direct inward dialing (DID) numbers.

A DID number allows an inbound caller to bypass the auto attendant and directly reach a company employee or department.

A phone company can offer a DID service to provide a block of telephone numbers for calling into your company FortiVoice unit (PBX) over limited rented physical lines (also called trunk lines). The phone numbers you rent may not be enough to provide a DID number for each extension because each DID number can only be mapped to one extension. To address this issue, the FortiVoice unit offers the following two options:

• Only map the DID numbers to the extensions you want.
• Bundle caller number patterns to a DID number which can be mapped to any extension.

You cannot delete or move the two default DID mapping rules (system_voice and system_fax).

FortiVoice also gives you the option to provide a fax account to a user by mapping the user's extension to a DID number. Users can manage their personal fax account in the FortiVoice user portal.

This personal fax account is different from the eFax account which is used as a general fax for an organization. For information about eFax, see Configuring fax.

This section includes the following topics:

• To map a standard voice DID number
• To map an advanced voice DID number
• To map a personal fax DID number

To map a standard voice DID number

1. Go to Call Routing > Inbound > DID Mapping.
2. Click New and select Voice - Standard.
3. Configure the following:

GUI field	Description
Enabled	Select to activate this DID setting.
Rule name	Enter a name for this DID setting.
Condition	Select the trunk used for dialing the DIDs.
Additional Action	Select the fallback action to take should a call fail to be received by the DID mapping extension. For some actions, you need to enter the extension, such as Dial voicemail.
Number Mapping	DID number: Enter the DID number that you want to map to an extension. The DID number cannot be mapped to more than one extension unless the DID is bundled with a caller number. Otherwise, an error message about duplicate entry appears and the DID mapping configuration cannot be saved. Extension: Enter the extension that you want to map to the DID number. The extension supports digits from 0 to 9 and a maximum of 16 digits. Description: Enter any notes you have for the mapping.

4. Click Create.

To map an advanced voice DID number

1. Go to Call Routing > Inbound > DID Mapping.
2. Click New and select Voice - Advanced.
3. Configure the following:

   GUI field	Description
   Enabled	Select to activate this DID setting.
   Rule name	Enter a name for this DID setting.
   Condition	Trunk: Select the trunk used for dialing the DIDs. Schedule: Select a schedule to apply the rule. For information on creating schedules, see Scheduling the FortiVoice unit. Caller ID Match: Click New to set the caller ID pattern following Pattern-matching syntax and Pattern-matching examples for this dial plan, and click Create.
   Additional Action	Inbound caller ID modification: Select the caller ID modification configuration. For more information on caller ID modification, see Modifying caller IDs. Inbound fallback action: Select the fallback action to take should a call fail to be received by the DID mapping extension. For some actions, you need to enter the extension, such as Dial voicemail.
   Number Mapping	DID number: Enter the DID number that you want to map to an extension. The DID number cannot be mapped to more than one extension unless the DID is bundled with a caller number. Otherwise, an error message about duplicate entry appears and the DID mapping configuration cannot be saved. Extension: Enter the extension that you want to map to the DID number. The extension supports digits from 0 to 9 and a maximum of 16 digits. Description: Enter any notes you have for the mapping. Option: To direct incoming calls to the extension through the mapped DID, select Inbound. If this option is not selected, incoming calls to this extension through the mapped DID will follow the inbound fallback action configured in Additional Action. By default, this option is selected. To send the DID numbers of the extensions mapped to the DID with outgoing calls so that the DID numbers can display on the called phones, select Outbound. If this option is not selected, the extension’s DID number is not sent with outgoing calls and the phone number displayed on the called phone could be the FortiVoice main number (see Main number) or the trunk phone number (see Phone Number) associated with the extension. Alternatively, you can choose the caller ID to display on the called phone when configuring an extension. Caller Number Patterns: This option allows you to bundle caller number patterns to a DID number which can be mapped to any extension. Enter the caller’s phone pattern field and click Create. Click the + icon to add more calling numbers patterns. Only the caller numbers matching the patterns you set will reach the mapped extension when they dial the DID number. The caller number pattern supports digits from 0 to 9, a maximum of 16 digits, and optionally starts with one or more + signs.

4. Click Create.

To map a personal fax DID number

1. Go to Call Routing > Inbound > DID Mapping.
2. Click New and select Fax.
3. Configure the following:

GUI field	Description
Enabled	Select to activate this DID setting.
Rule name	Enter a name for this DID setting.
Condition	Trunk: Select the trunk used for dialing the DIDs.
Additional Action	Inbound fallback action: Select the fallback action to take should a fax fail to be received by the DID mapping extension. For some actions, you need to enter the extension, such as Dial voicemail.
Number Mapping	DID number: Enter the DID number that you want to map to an extension. The DID number cannot be mapped to more than one extension unless the DID is bundled with a caller number. Otherwise, an error message about duplicate entry appears and the DID mapping configuration cannot be saved. Extension: Enter the extension that you want to map to the DID number. The extension supports digits from 0 to 9 and a maximum of 16 digits. Description: Enter any notes you have for the mapping.

4. Click Create.