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Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony

recommendation/international standard from the International Telecommunication Union
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Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony

Summary

Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony is an ITU-T recommendation version[1].

Key Facts

  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's instance of is recorded as Teleservices supported by an ISDN: Telephony — instance of (P31): ITU-T recommendation version[2].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's publisher is recorded as Teleservices supported by an ISDN: Telephony — publisher (P123): ITU Telecommunication Standardization Sector[3].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's edition number is recorded as 11/1988[4].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's language of work or name is recorded as Teleservices supported by an ISDN: Telephony — language of work or name (P407): English[5].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's publication date is recorded as +1988-11-25T00:00:00Z[6].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's official website is recorded as https://www.itu.int/rec/T-REC-I.241.1-198811-I/en[7].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's work available at URL is recorded as https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-I.241.1-198811-I!!PDF-E&type=items[8].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's number of pages is recorded as {'unit': '1', 'amount': '+6'}[9].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's standards body is recorded as Teleservices supported by an ISDN: Telephony — standards body (P1462): International Telecommunication Union[10].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's title is recorded as Teleservices supported by an ISDN: Telephony[11].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation G.114 (11/1988): Mean one-way propagation time[12].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation G.711 (11/1988): Pulse code modulation (PCM) of voice frequencies[13].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation I.220 (11/1988): Common dynamic description of basic telecommunication services[14].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation I.430 (11/1988): Basic user-network interface - Layer 1 specification[15].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation I.431 (11/1988): Primary rate user-network interface - Layer 1 specification[16].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation Q.920 (11/1988): ISDN user-network interface data link layer - General aspects[17].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation Q.921 (11/1988): ISDN user-network interface - Data link layer specification[18].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation Q.930 (11/1988): ISDN user-network interface layer 3 - General aspects[19].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's cites work is recorded as Teleservices supported by an ISDN: Telephony — cites work (P2860): Recommendation Q.931 (11/1988): ISDN user-network interface layer 3 specification for basic call control[20].
  • Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's ITU-T Recommendation is recorded as I.241.1 (11/1988)[21].

Body

Authorship and Creation

Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's publisher is recorded as Teleservices supported by an ISDN: Telephony — publisher (P123): ITU Telecommunication Standardization Sector[3].

Publication

Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony's publication date is recorded as +1988-11-25T00:00:00Z[6]. Its language of work or name is recorded as Teleservices supported by an ISDN: Telephony — 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.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.
  20. [21] ↑ . 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 I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony. Retrieved May 3, 2026, from https://4ort.xyz/entity/recommendation-i-241-1-11-1988-teleservices-supported-by-an-isdn-telephony
MLA “Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/recommendation-i-241-1-11-1988-teleservices-supported-by-an-isdn-telephony.
BibTeX @misc{4ortxyz_recommendation-i-241-1-11-1988-teleservices-supported-by-an-isdn-telephony_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony}}, year = {2026}, url = {https://4ort.xyz/entity/recommendation-i-241-1-11-1988-teleservices-supported-by-an-isdn-telephony}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Recommendation I.241.1 (11/1988): Teleservices supported by an ISDN: Telephony — https://4ort.xyz/entity/recommendation-i-241-1-11-1988-teleservices-supported-by-an-isdn-telephony (retrieved 2026-05-03)

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