Connection failed! In order to access the online features for this titlle

Please see the articles below for more information and steps to take to help ensure connectivity:

https://help.ea.com/uk/article/losing-connection-to-ea-servers
https://help.ea.com/article/issues-connecting-online-with-xbox-360
https://help.ea.com/article/connection-network-issues-with-ps3

Ports:
360: http://support.xbox.com/en-US/xbox-360/networking/network-ports-used-xbox-live
XB1: http://support.xbox.com/en-US/xbox-one/networking/network-ports-used-xbox-live
PS3/PS4: https://support.us.playstation.com/app/answers/detail/a_id/241

Madden 15 specific ports: http://help.ea.com/en/article/what-online-ports-should-i-open-for-madden-nfl-15/

If required, click the following link to contact an Advisor: http://help.ea.com/en/contact-us/new/?category=demo-beta

For help on how to contact an Advisor please use this link: http://answers.ea.com/t5/EA-Help-Beta/How-to-contact-a-Game-Advisor-using-the-new-EA-Help-page/td-p/2161281

It may be worth seeing if disabling IPv6 on your modem/router has an effect on this.