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After making changes here, make sure you press the "Apply Config" button at the top.

Then press the "Reload DAHDI/Asteirsk" button at the bottom of this page. These changes DO NOT require a restart of Asterisk or DAHDI.

System Settings

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The System Settings section lets you set common DAHDI system.conf settings.  You almost never have to change these or add any unless instructed by someone to add or change a DAHDI system.conf setting.

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Info
 

After making changes here, make sure you press the "Apply Config" button at the top.

Then press the "Restart DAHDI/Asterisk" button. These changes DO require a restart of Asterisk or DAHDI, and all active calls on your system will be DROPPED!

Modprobe Settings

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The Modprobe Settings let you control the Linux systems used to manage drivers. You can change value and options for each DAHDI kernel module, or driver. Different models of cards have different kernel module settings and you should only change these if instructed by the manufacturer of your card or support. Also consult the manufacturer if you're outside of North America because you'll need to change the settings in this section. 

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Clicking on this section will bring up all the modules that we autoload.
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From here you can disable any modules that you do not need if you want.  In our example we removed a handful of modules by un-checking them and pressing the save button.
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You can also drag and drop the order of the modules and how DAHDI will load them.  This is not usually needed except rare circumstances.  You will see in the example below we moved zaphfc to the top.
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Info
 

After making changes here, make sure you press the "Apply Config" button at the top.

Then press the "Restart DAHDI/Asterisk" button. These changes DO require a restart of Asterisk or DAHDI, and all active calls on your system will be DROPPED!

Sangoma Settings

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The Sangoma Settings section is related to Sangoma Cards only. Since Sangoma cards use their own drivers in front of Asterisk, with Sangoma Settings you will be able to manage these parameters: 

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In General Settings, you can define all the different information as it relates to your specific carrier setup, such as signaling and switch type.  
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Group Settings

When setting up a DAHDI card, you break channels (T1 or analog) into groups shorthand known as g0 for group 0. In our example we are going to set up our the Digium T1 cards Port 1 as group 0. We are also going to set up the other 2 ports on the Sangoma BRI card as group 1. Lastly we will set up the GSM card as group 2.  You can pick and choose which groups to put your ports of a card under.  Then when creating your trunks in the FreePBX GUI, you define which groups each trunk uses for outbound calling.
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GSM Card

General Settings

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