I need to know if a 2960 Catalyst Switch needs a special card o configuration to support VoIP. I can't find it on the specifications.
Thanks a lot
You can use Cisco Catalyst 2960-48TT Switch but you will need to use power injectors or MidSpans to power the phones for more number of users, you can say under 300 user's.
You will be just fine using your 2960 for VoIP. You will need power injectors/power supplies for your phones if you don't have one of the 2960 with PoE models.