Specification of Dual Tone Multi-Frequency (DTMF) Transmitters and Receivers; Part 2: Transmitters
STANDARD published on 21.9.2000
Designation standards: ETSI ES 201235-2-V1.1.1
Publication date standards: 21.9.2000
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: European technical standard
Category: Technical standards ETSI