DS3 is upported in the below cards. Check the link also
PA-T3+, PA-T3+=
One-port clear-channel DS3 port adapter
Recommended for high-performance uplink and trunking applications
PA-2T3+
PA-2T3+=
Two-port clear-channel DS3 port adapter
Recommended for high-density or T3 line aggregation applications
http://www.cisco.com/warp/public/cc/pd/ifaa/pa/prodlit/pods3_ds.htm