Win7 system broadband connection error code 720 how to solve

Fault map:

Workaround:
1, delete the original broadband connection, and then re-establish;
2, then go to “ Control Panel - Network and Sharing Center - Change Adapter Settings & rdquo;, Then right click on the "Broadband Connection" to select the attribute;

3. In the opened properties window, switch to the "Network" tab and select "Internet Protocol Version (TCP/IPv4)" & rdquo;, click the property button;

4, then select “ automatically get the IP address & rdquo;, then click OK to solve the problem.

Tips: Because the ipv4 resource problem domestic ADSL dial-up Internet is automatically assigned through the BRAS in the core layer of the metropolitan area network, so if it is not a fixed IP user, if you choose “ use the following IP Address & rdquo; will prompt "Error 720".