Integrated Services Digital Network (ISDN);Explicit Call Transfer (ECT) supplementary service;Digital Subscriber Signalling System No. one (DSS1) protocol;Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsed by Asociación Española de Normalización in July of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300369-4 Ed1 |
