<div>
I would keep the old T-1 line running if possible then do a planned cutover once you've sorted out any potential DNS changes, firewall rules, etc. as pointed out by Seth above.
</div>


I would keep the old T-1 line running if possible then do a planned cutover once you've sorted out any potential DNS changes, firewall rules, etc. as pointed out by Seth above.

<div>
<div class="content wysiwyg-content">
I have AT&amp;T coming in to our business installing their fiber. I would like to know what changes need to be made on our current windows Server 2012 system. We currently have a T-1 configured and using. We do have VPN, OWA and a sonic wall with 3 cisco switches.<br />
<br />
Thanks in advance.
</div>
</div>


I have AT&T coming in to our business installing their fiber. I would like to know what changes need to be made on our current windows Server 2012 system. We currently have a T-1 configured and using. We do have VPN, OWA and a sonic wall with 3 cisco switches.

Thanks in advance.

How to change ISP information in Server 2012

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.