t1 slotThen enter the card type {e1 | t1} slot subslot command for the new confuration information. Step 4. voice-card slot Router(conf)# voice card 1. Enters voice card interfaceYes, you can, but there will be an extra slot of free space on the GPU side. The new version of the T1 (v1.2) should have 1.25 or 1.5 slot support so you can take up the least amount of space