t1 slotslotport: Slot number and port number where the channelized E1 or T1 controller is located. number : Channelized E1 or T1 controller number. timeslots: For ISDN, the D channel timeslot,Then 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 interface