Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony service) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling
NORMA vydaná dňa 31.1.1998
Označenie normy: ETSI TBR 021-ed.1
Dátum vydania normy: 31.1.1998
Počet strán: 61
Približná hmotnosť: 183 g (0.40 libier)
Krajina: Európska technická norma
Kategória: Technické normy ETSI