YD/T 2457.2-2015(First stage) - Part 2 is based on a unified IMS services test methods multimedia telephony service: call blocking and multi-call service (English PDF)
YD/T 2457.2 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| YD/T 2457.2-2016 | Method for chemical composition analysis of dimethyl ether catalyst by vapor phase dehydration of methanol | Valid |
| YD/T 2457.2-2015 | (First stage) - Part 2 is based on a unified IMS services test methods multimedia telephony service: call blocking and multi-call service | Obsolete |
YD/T 2457.2-2015 is obsolete. It has been replaced by YD/T 2457.2-2016. This page sells the obsolete edition, for projects and contracts that still cite it.
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YD/T 2457.2-2015 ((First stage) - Part 2 is based on a unified IMS services test methods multimedia telephony service: call blocking and multi-call service) is available as an English-translated PDF.
YD/T 2457.2-2015 is the Chinese industry standard "(First stage) - Part 2 is based on a unified IMS services test methods multimedia telephony service: call blocking and multi-call service". It is obsolete: it has been replaced by YD/T 2457.2-2016.
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Document preview — YD/T 2457.2-2015
Contents
- Document data
1 Document data
Sector: Telecom (industry standard).
Status: obsolete, replaced by YD/T 2457.2-2016.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
YD/T 2457.1-2013 — Test method of services based on the unified IMS multimedia telephony service (release 1). Part 1: basic services and required supplementary services
YD/T 2457.2-2016 — Method for chemical composition analysis of dimethyl ether catalyst by vapor phase dehydration of methanol
YD/T 1114-2026 — Halogen-free flame retardant optical fibre cable
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YD/T 2457.2-2015
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