DIN ETS 300109 : 1993

DIN ETS 300109 : 19931472427
DIN ETS 300109 : 1993
Title: Integrated Services Digital Network (ISDN); circuit-mode 64 kbit/s 8 kHz structured bearer service category usable for speech information transfer; service description; english version ETS 300109:1992


Year: 1993
Publisher: DIN
Availability: Within 1-2 working days