Change FXO (Analog Line) Port Group Setting:
This describes editing the file containing FXO port settings to add or remove FXO ports from a group. The default group "0" contains all installed FXO ports, if you will not be using all the installed ports you must remove the unused ports in order for outbound dialing to work properly.

1. Open your web browser and enter the IP address or hostname of your server in the address bar (ex. http://192.168.1.115) then press enter.
2. You should Freevoice PBX User page should now be displayed.
3. Switch into Admin Mode by clicking the switch link next to User mode in the top right corner.
4. Enter maint for the user, the default password is freevoice.
5. Move the mouse over the Asterisk tab, and click on Config Edit.
6. At the Config Edit page scroll down and click on zapata-auto.conf
7. Each fxo port is referred to by channel number, find the channel number ("Channel=>#")for the port and change the group setting on the line above the channel number. Set the group to '1' ("group=1") to remove it from the default group '0'.
8. Click the Update button in the bottom left corner when done.
9. Click the Re-Read Configs tab to reload Asterisk

The Config Edit page will allow you to edit configuration files for Asterisk and any VoIP phones. This is for advanced users, inappropriate changes to the configuration files can cause serious harm! Editing of these files is only required in very few situations, such as FXO/FXS card settings, echo cancellation, and custom dialplan scripting.