DIN ETS 300178 : 1993

DIN ETS 300178 : 19931472470
DIN ETS 300178 : 1993
Title: Integrated Services Digital Network (ISDN); advice of charge: charging information at call set-up time (AOC-S) supplementary service; service description; English version ETS 300178:1992


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