Fortinet FortiGate Voice 4.0 MR1 - Manual (Page 28)

Adding extensions and configuring FortiFones for users behind a NAT device Example FortiGate Voice branch office configuration
FortiGate Voice Version 4.0 MR1 Administration Guide
28 01-410-112851-20100601
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7 Select Submit.
8 Select Save & Reboot to save the service domain information.
9 If the FortiFone can successfully connect to and register with the FortiGate Voice unit
the Status of the FortiFone changes to Registered.
If Status does not change to Registered you should verify the Register Name or re-
enter the Password. You should also confirm that the Domain Server and Proxy Server
IP addresses are correct.
Adding extensions and configuring FortiFones for users behind a
NAT device
When adding an extension for any SIP phone with a NAT device between the phone and
the FortiGate Voice unit you must enable NAT in the FortiGate Voice extension
configuration for the phone. You can enable NAT only from the CLI. This applies whether
the phone is on a remote network behind a NAT device or behind a NAT device on the
internal network.
To add an extension for a SIP phone behind a NAT device
The following procedure describes adding the extension from the FortiGate Voice CLI
because you must use the CLI to enable NAT. You could add the extension from the
web-based manager and then edit the extension from the CLI to enable NAT.
The following configuration is the same whether the phone is behind a NAT device on the
internal network or on a remote network,
1 Connect to the FortiGate CLI.
2 Enter the following command to add extension 6010.
The command includes setting nat to yes to enable NAT.
config pbx extension
edit 6010
set first-name <first_name_str>
set last-name <last_name_str>
set email <email_str>
User Name 6001
This is actually the Line Number or Extension Number and must
match the Extension Number added to the FortiGate Voice
Extension configuration for this phone.
Register Name 6001
The Register Name is used to authenticate the FortiFone and
must match the Extension Number added to the FortiGate Voice
Extension configuration for this phone. Both the User Name and
Register Name are required.
Register Password The Password added to the FortiGate Voice Extension
configuration for this phone. The Register Name and Register
Password are used to authenticate the phone with the FortiGate
Voice unit.
Domain Server Leave this field blank.
Not required since the configuration uses the FortiGate Voice
unit as a SIP proxy. This field is only used to add the phone to a
SIP service domain.
Proxy Server 172.20.120.10
The IP address of the FortiGate Voice internal interface.
Outbound Proxy Leave this field blank.