In T1 and E1 mode the primary rate interface may work with different channel types. Usually every timeslot is similar to one channel but it is also possible to bundle multiple timeslots to one channel with a higher bandwith. This channel bundeling is currently not supported by the switching equipment for dialup connections of any network-provider. But usage is possible with leased lines. e1-standard(1) 1 D-channel 64 kbit, 30 B-channels 64kbit bchannels are numbered from 1 to 15 and from 16 to 31 e1-1tr6(2) 1 D-channel 64 kbit, 30 B-channels 64kbit identical timeslotassignment as e1-standard but bchannels are numbered from 1 to 30 e1-H0(3) 1 D-channel 64 kbit, 5 B-channels 384kbit bchannels are numbered from 1 to 5 e1-H12(4) 1 D-channel 64 kbit, 1 B-channel 1920kbit e1-burst(5) 1 channel 1984kbit, channel number is 0 e1-raw(6) 1 channel 2048kbit, channel number is 0 e1-leased(7) 31 B-channels 64kbit, numbered from 1 to 31 t1-standard(6) 1 D-channel 64 kbit, 23 B-channels 64kbit bchannels are numbered from 1 to 23 t1-H0(7) 1 D-channel 64 kbit, 4 B-channels 384kbit bchannels are numbered from 1 to 4 t1-H11(8) 1 D-channel 64 kbit, 1 B-channel 1472kbit t1-burst(9) 1 channel 1536kbit, channel number is 0 t1-channelmodes can only be set when pmxIfLayer1Mode is t1 e1-channelmodes can only be set when pmxIfLayer1Mode is e1