ISO IEC 19058 pdf download – Information technology — Telecommunications and information exchange between systems — Broadband Private Integrated Services...
ISO IEC 19460 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network...
ISO IEC 20161 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network...
ISO IEC 21407 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network...
ISO IEC 21408 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network...
ISO IEC 21410 pdf download – Information technology — Telecommunications and information exchange between systems — Corporate telecommunication networks —...
ISO IEC 21992 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network...