TR 101 959-2002 Access and Terminals (AT); Ringing without DC for Terminal Equipment (TE)@ Terminal Support Interfaces (TSI) and Local Exchange Interfaces (LEI) (V1.1.1)
ETSI - European Telecommunications Standards Institute
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TR 101 959-2002
TR 101 959-2002 history
2002TR 101 959-2002 Access and Terminals (AT); Ringing without DC for Terminal Equipment (TE)@ Terminal Support Interfaces (TSI) and Local Exchange Interfaces (LEI) (V1.1.1)