Description This is a NEW Cisco AXSM-16-T3E3/B Double-height ATM SM, 16 T3s or E3s, used on MGX 8850/89 MGX 8800 Broadband ATM Service Modules AXSM-16-T3E3/B AXSM-16-T3E3B AXSM16T3E3/B,AXSM-16-T3E3/B