Fortinet Technologies Inc. Page 190 FortiVoice Enterprise Phone System 4.0.0 Administration Guide
Configuring direct inward dialing
The Call Routing > Inbound > DID Mapping submenu lets you configure how to map Direct
Inward Dialing (DID) numbers.
Local phone companies offer DID service to provide a block of telephone numbers for calling
into a company’s PBX system 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 workstation,
because each DID can only be mapped to one extension. With the FortiVoice unit, you have 2
options to address this issue:
• only map the DID numbers to the extensions you want.
• map a DID number to one or more extensions based on the callers’ phone numbers.
For more information, see “Mapping DIDs” on page 191.
To view the DIDs, go to Call Routing > Inbound > DID Mapping.
GUI field Description
Enabled Select to activate this DID.
Name The name of the DID.
Number Mapping The DID number and the extension it is mapped to. For details, see
“Mapping DIDs” on page 191.
Incoming Trunk The trunk used for dialing the DIDs.
Caller ID
modification
The caller ID modification configuration. For more information, see
“Inbound caller ID modification” on page 191.
Fall back The action to take if a caller not in the caller list dialed the DID number
mapped to the extensions.
Fallback Target The extension to dial for the Action you choose. For details, see
“Inbound fallback action” on page 191.
Figure 68: Viewing DID mappings
To configure a DID
1. Go to Call Routing > Inbound > DID Mapping.
2. Click New.
3. Configure the following:
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