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Gamma VoIP Service Configuration Guide
July 16, 2014
26-730-186704-20140716
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Configuring FortiVoice™ for Gamma VoIP service
Introduction
This guide will show you how to set up a service provider profile, change codec options (if
necessary), and VoIP numbers for Gamma VoIP service.
When you start an account with Gamma, they will provide you with account activation
information. Use this information to activate Gamma service, and to set up the service provider
profile and VoIP numbers on your FortiVoice system.
See the “VoIP Information” section of the FortiVoice User Guide for instructions on how to
connect your system to a network, set up IP addresses, configure the router, set up line hunt
groups, set up VoIP caller ID and reserve VoIP lines.
Setting up a service provider profile
A service provider profile contains the settings that allow your FortiVoice to register with the
provider.
1. Select the VoIP Configuration page.
2. Select a Profile (SP 1 to SP 4) that you wish to assign for use with Gamma.
3. Select the Activate Profile checkbox.
4. In the Service Provider pull-down menu, select Gamma as the Profile name.
5. Click the Update Configuration button. The essential settings for communication with the
service provider’s servers will be completed automatically.
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Setting codec options (if necessary)
A codec is a method of compressing and decompressing audio signals for communication
across a network. FortiVoice supports the G.729 and G.711 (µ-law or A-law) codecs for VoIP
calls. If your service provider or equipment requires specific codecs for VoIP or Fax over IP
calls, you can restrict FortiVoice to use the required codec.
The Additional Settings button opens a window where you will find the codec options at the
bottom. This section allows you to select the codecs your system can use, specify the preferred
codec, and clear the unsupported codecs. You can specify the codecs for each service provider
profile.
The following codecs are supported by the service provider:
• G.729 — This codec provides good quality. It requires the least bandwidth and
accommodates the highest number of concurrent calls.
• G.711A — This codec provides high quality and supports Fax over IP. It requires the most
bandwidth and accommodates the fewest number of concurrent calls. G.711A is used
worldwide outside North America and Japan.
• G.711A is set as the Preferred codec.
• Voice activity detection (VAD) — This is disabled by default, as it is not recommended for
this service.
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Setting up VoIP numbers
Gamma assigns VoIP numbers, which are telephone numbers, to be used to dial a FortiVoice
system.
1. Select the VoIP Numbers page.
2. Select a VoIP number slot.
3. Select the Activate VoIP Number checkbox.
4. Set the VoIP profile to Gamma.
5. Enter the VoIP number. This is the ID Number provided by Gamma.
a. Enter the first two digits as the Country code.
b. Enter the third digit as the City or area code.
c. Enter the final nine digits as the Number.
6. Enter the User/Account name. This is the Account Name provided by Gamma, and may
match the ID Number.
7. Enter the Password provided by Gamma.
8. Set up call handling for the VoIP number. For more information, click the Help icon ( ) in the
Call Handling area.
9. Repeat steps 2 to 8 for each additional VoIP number.
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Setting up a line hunt group
Set up a line hunt group for Gamma, as described in the “VoIP Information” section of the
FortiVoice User Guide.
The configuration has nine different line hunt groups. For all FortiVoice units, line hunt group 88
uses multi-branch VoIP by default, and the other line hunt groups use telephone lines. You can
modify these default settings as required. If you are using multiple service provider VoIP
networks, set up a line hunt group for each service provider.
FortiVoice recommends the use of the line hunt group’s Busy Overflow feature for failover to
telephone lines and protection against SIP trunk failure (for example, loss of broadband access).
Saving settings
To transfer settings from your computer to the FortiVoice system, choose File > Save. A window
appears indicating the configuration is being sent.
1. Select the VoIP Configuration or VoIP Numbers page.
2. Click View All Registrations. The Registration Status window appears with a list of VoIP
numbers, their registration status, and the number of seconds until their registrations with
the SIP server will expire. This confirms that the VoIP numbers are registered with the service
provider.
3. Choose All Registered Numbers or an active profile (e.g. Gamma).
4. Ensure the status of the VoIP numbers/account(s) is Registered.
Client information shown is for example purposes only.
Ensure that Hunt group 9 is assigned to the group of telephone lines or VoIP trunks used to call
emergency services.
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