Integrated Services Digital Network (ISDN);Signalling System No.7 (SS7);ISDN User Part (ISUP) version 4 for the international interface;Part 22: International Emergency Preference Scheme (IEPS) service [ITU-T Amendments (2002) to Q.761 - Q.764 (1999) modified] (Endorsed by Asociación Española de Normalización in July of 2021.)
| AENOR | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Name | UNE-EN 300356-22 V1.1.1 |
