>And such a 64kbps channel is a DS0 standard.  24 DS0s multiplexed
>together make 1 DS1 (which is commonly carried on a T1 physical
>interface).  [And 30 DS0s make a European E1 capacity circuit.]
>30 DS1s make a DS3 which is usually carried on copper as a T3.


Isn't it 32 DS0 streams for an E1 (2.048Mb/s), with one or two (there is
some variation from country to country) of the DS0's reserved for signaling?

As a user of a rented E1, you can get 30 slots, and in some countries 31
slots.

Jack Smith

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