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Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents

superseded recommendation/international standard from the International Telecommunication Union
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Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents

Summary

Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents is an ITU-T recommendation version[1].

Key Facts

  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's instance of is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — instance of (P31): ITU-T recommendation version[2].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's publisher is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — publisher (P123): ITU Telecommunication Standardization Sector[3].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's edition number is recorded as 11/1988[4].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's language of work or name is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — language of work or name (P407): English[5].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's publication date is recorded as +1988-11-25T00:00:00Z[6].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's official website is recorded as https://www.itu.int/rec/T-REC-U.40-198811-S/en[7].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's work available at URL is recorded as https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-U.40-198811-S!!PDF-E&type=items[8].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's number of pages is recorded as {'unit': '1', 'amount': '+8'}[9].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's standards body is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — standards body (P1462): International Telecommunication Union[10].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's title is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents[11].
  • Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's ITU-T Recommendation is recorded as U.40 (11/1988)[12].

Body

Authorship and Creation

Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's publisher is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — publisher (P123): ITU Telecommunication Standardization Sector[3].

Publication

Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents's publication date is recorded as +1988-11-25T00:00:00Z[6]. Its language of work or name is recorded as Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — language of work or name (P407): English[5].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents. Retrieved May 3, 2026, from https://4ort.xyz/entity/recommendation-u-40-11-1988-reactions-by-automatic-terminals-connected-to-the-telex-network-in-the-event-of-ineffective-call-attempts-or-signalling-incidents
MLA “Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/recommendation-u-40-11-1988-reactions-by-automatic-terminals-connected-to-the-telex-network-in-the-event-of-ineffective-call-attempts-or-signalling-incidents.
BibTeX @misc{4ortxyz_recommendation-u-40-11-1988-reactions-by-automatic-terminals-connected-to-the-telex-network-in-the-event-of-ineffective-call-attempts-or-signalling-incidents_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents}}, year = {2026}, url = {https://4ort.xyz/entity/recommendation-u-40-11-1988-reactions-by-automatic-terminals-connected-to-the-telex-network-in-the-event-of-ineffective-call-attempts-or-signalling-incidents}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Recommendation U.40 (11/1988): Reactions by automatic terminals connected to the telex network in the event of ineffective call attempts or signalling incidents — https://4ort.xyz/entity/recommendation-u-40-11-1988-reactions-by-automatic-terminals-connected-to-the-telex-network-in-the-event-of-ineffective-call-attempts-or-signalling-incidents (retrieved 2026-05-03)

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