Integrated Services Digital Network (ISDN);Digital Subscriber Signalling System No. one (DSS1) protocol;Signalling network layer for circuit-mode basic call control;Part 2: Specification and Description Language (SDL) diagrams (Endorsed by Asociación Española de Normalización in August of 2022.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-ETS 300403-2 Ed1 |
