Integrated Services Digital Network (ISDN) - Call Hold (HOLD) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 3: Test Suite Structure and Tests Purposes (TSS&TP) specification for the user
STANDARD published on 1.7.1999
Designation standards: ČSN EN 300141-3-V1.2.4
Classification mark: 877032
Catalog number: 55927
Publication date standards: 1.7.1999
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN