Integrated Services Digital Network (ISDN); Definition and usage of cause and location in Digital Subscriber Signalling System No. one (DSS1) and Signalling System No. 7 (SS7) ISDN User Part (ISUP) [ITU-T Recommendation Q.850 (1998) with addendum modified] (Endorsed by AENOR in November of 2008.)
STANDARD published on 1.11.2008
Designation standards: UNE-EN 300485V1.3.1
Publication date standards: 1.11.2008
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE