t1 slotT1 E1 Analysis – Platforms •USB connectivity provides a plug-and-play interface to any PC allowing portability and convenience •Dual T1 E1 PCI Express Cards is an enhanced PCslotport: 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,