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Create DNS records for your domainCreate ISO DVD and boot from ISO DVD
Install CentOS 7
Enter network settings
Enter host and domain settings
Update Install sipXcom with maintenance releases
Select Configure server core, telephony, and device services
Add Users
Configure soft and or hard phones
Add SIP Trunking for incoming and outgoing telephone calls
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Video of initial configuration...
Network Settings
Login Log in to the system as root with the password you provided earlier and continue to configure sipXcom starting with Network Settings. Enter "n" response to "Would you like to configure your system's network settings?" and continue entering the rest of the items.
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Note: Some browsers are disallowing self-signed certificates (IE and Chrome). Try using FireFox and adding in the self-signed certificate as trusted to get by. Then get a certificate added as soon as possible. See: Certificates
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Use superadmin for User ID and password set in the step before for logging in Web UI.
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Softphone Configuration
An open source SIP soft phone, softphone, such as Jitsi or LINPHONE for Windows, MAC OSX and Linux can be used.
LINPHONE can be downloaded from:
http://www.linphone.org/
LINPHONE is also available at no cost for:
Mobile Devices – Android, iOS and Windows 8 from Appstore and Google Play
Web Browsers - Chrome, Internet Explorer, Mozilla Firefox and Safari @ http://web.linphone.org
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sipXcom will automatically configure the many brands and models of hard phones shown in the drop down list shown on the next page. Information on phones can be found in the Wiki at http://wiki.sipxcom.org/display/sipXcom/Hardphones
To automatically configure phones, Server Configuration – Device Provisioning must be set up. Just plug in a supported phone to the VOIP network or VLAN that sipXcom resides on and sipXcom will automatically configure the phone.
Polycom phones will self configure when plugged into the sipXcom system network. The Cisco Discovery Protocol is used. The phone will initially configure with an unique extension ID displayed on the phone such as W9B. The new phone will be listed with the unique ID in the description under Devices, Phones. At this point, you can add lines to this phone, save and send profiles. The phone will re-boot and display the lines added. Please also see http://wiki.sipxcom.org/display/sipXcom/Configuring+Polycom+Soundpoint+IP+Phones
The alternative to the automatic configuration is manual configuration described next.
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Insert the serial number of the phone which is the MAC address. Also, select the most current firmware version available on sipXcom for this model of phone.
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Insert Name of ITSP, use built-in SIP Trunk SBC, use provider template and select from the drop down, and FDQN of ITSP server. Click Apply and OK. 
Set up Caller ID
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