COMMUNICATION TELESYSTEMS INTERNATIONAL S-1

FORM S-1

EXHIBIT 2.1

EXHIBIT 2.2

EXHIBIT 2.3

EXHIBIT 3.1

EXHIBIT 3.2

EXHIBIT 3.3

EXHIBIT 9.1

EXHIBIT 10.1

EXHIBIT 10.2

EXHIBIT 10.3

EXHIBIT 10.4

EXHIBIT 10.5

EXHIBIT 10.6

EXHIBIT 10.7

EXHIBIT 10.8

EXHIBIT 10.9

EXHIBIT 10.10

EXHIBIT 10.11

EXHIBIT 10.12

EXHIBIT 10.13

EXHIBIT 10.14

EXHIBIT 10.15

EXHIBIT 10.16

EXHIBIT 10.16.1

EXHIBIT 10.16.2

EXHIBIT 10.16.3

EXHIBIT 10.16.4

EXHIBIT 10.16.5

EXHIBIT 10.16.6

EXHIBIT 10.16.7

EXHIBIT 10.16.8

EXHIBIT 10.17

EXHIBIT 10.17.1

EXHIBIT 10.18

EXHIBIT 10.19

EXHIBIT 10.19.1

EXHIBIT 10.20

EXHIBIT 10.20.1

EXHIBIT 10.21

EXHIBIT 10.21.1

EXHIBIT 10.22

EXHIBIT 10.23

EXHIBIT 10.24

EXHIBIT 10.25

EXHIBIT 10.26

EXHIBIT 10.27

EXHIBIT 10.28

EXHIBIT 10.29

EXHIBIT 10.30

EXHIBIT 10.31

EXHIBIT 10.32

EXHIBIT 10.33

EXHIBIT 10.34

EXHIBIT 10.35

EXHIBIT 10.36

EXHIBIT 10.37

EXHIBIT 10.38

EXHIBIT 10.39

EXHIBIT 10.40

EXHIBIT 10.41

EXHIBIT 10.42

EXHIBIT 10.43

EXHIBIT 10.44

EXHIBIT 10.45

EXHIBIT 10.46

EXHIBIT 10.47

EXHIBIT 10.48

EXHIBIT 10.49

EXHIBIT 10.50

EXHIBIT 10.51

EXHIBIT 10.51.1

EXHIBIT 10.52

EXHIBIT 10.53

EXHIBIT 10.54

EXHIBIT 10.55

EXHIBIT 10.58

EXHIBIT 10.59

EXHIBIT 10.60

EXHIBIT 21.1

EXHIBIT 23.2

EXHIBIT 27.1