Saint Helena:
general assessment: can communicate with any place in
the world

domestic: automatic network

international: HF radiotelephone from Saint Helena to Ascension which is a major coaxial submarine cable relay point between South Africa, Portugal, and UK ; satellite earth stations - 2 Intelsat (Atlantic Ocean)

Saint Kitts and Nevis: general assessment: good interisland and international connections

domestic: interisland links to Antigua and Barbuda and Saint Martin
(Guadeloupe and Netherlands Antilles) are handled by VHF/UHF/SHF
radiotelephone

international: international calls are carried by radiotelephone to
Antigua and Barbuda and switched there to submarine cable or to
Intelsat; or carried to Saint Martin (Guadeloupe and Netherlands
Antilles) by radiotelephone and switched to Intelsat

Saint Lucia:
general assessment: adequate system

domestic: system is automatically switched

international: direct microwave radio relay link with Martinique and Saint Vincent and the Grenadines; tropospheric scatter to Barbados; international calls beyond these countries are carried by Intelsat from Martinique

Saint Pierre and Miquelon: general assessment: adequate