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ETSI ETR 144

Universal Personal Telecommunication (UPT); UPT phase 1: Numbering, dialling and evolution for incall
standard by European Telecommunications Standards Institute, 10/01/1994
Publisher: ETSI

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Overview of numbering and dialling for UPT Phase1; Identification of evolution paths

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Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) vers..

$7.00 $14.00

Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) vers..

$7.00 $14.00