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Access 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 on 6.5.2002
Designation standards: ETSI ES 201235-4-V1.2.1
Publication date standards: 6.5.2002
SKU: NS-310828
The number of pages: 15
Approximate weight : 45 g (0.10 lbs)
Country: European technical standard
Category: Technical standards ETSI
Latest update: 2026-01-01 (Number of items: 2 253 680)
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