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
NORMA vydána dne 6.5.2002
Designation standards: ETSI ES 201235-4-V1.2.1
Publication date standards: 6.5.2002
The number of pages: 15
Approximate weight : 45 g (0.10 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI