Ptm definitions

PTM

Point-to-Multipoint - communication one-to-many, contrast PTP. Terminology used in GPRS.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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PTM

pulse time modulation
Found on http://www.encyclo.co.uk/visitor-contributions.php

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PTM

Pulsed Telemetry Module
Found on http://www.iodp.org/acronyms/

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