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ETSI ES 201 235-4

ETSI ES 201 235-4
ETSI ES 201 235-4 English PDF Final draft Version 1.2.1Access and Terminals (AT); Specification of Dual-Tone Multi-Frequency (DTMF) Transmitters and Receivers; Part 4: Transmitters and Receivers for use in Terminal Equipment for end-to-end signalling

standard published 03/01/2002 by European Telecommunications Standards Institute

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Update of ES 201 235-4 to include new information on test tones and levels for digital transmitters

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Edition: Final draft V 1.2.1 Published: 03/01/2002 Number of Pages: 15

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