DIN ETS 300125 : 1992

DIN ETS 300125 : 19921472440
DIN ETS 300125 : 1992
Title: Integrated Services Digital Network (ISDN); user-network interface data link layer specification; application of CCITT recommendations Q.920/I.440 and Q.921/I.441; english version ETS 300125:1991


Year: 1992
Publisher: DIN Media GmbH
Availability: Within 1-2 working days