Home › Entities › itu_t_recommendation_version › Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)

Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)

superseded recommendation/international standard from the International Telecommunication Union
CreativeWork itu_t_recommendation_version Q26985385
Press Enter · cited answer in seconds

Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)

Summary

Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB) is an ITU-T recommendation version[1].

Key Facts

  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s instance of is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — instance of (P31): ITU-T recommendation version[2].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s publisher is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — publisher (P123): ITU Telecommunication Standardization Sector[3].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s edition number is recorded as 11/1988[4].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s language of work or name is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — language of work or name (P407): English[5].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s publication date is recorded as +1988-11-25T00:00:00Z[6].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s official website is recorded as https://www.itu.int/rec/T-REC-I.252.2-198811-S/en[7].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s work available at URL is recorded as https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-I.252.2-198811-S!!PDF-E&type=items[8].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s number of pages is recorded as {'unit': '1', 'amount': '+16'}[9].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s standards body is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — standards body (P1462): International Telecommunication Union[10].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s title is recorded as Call offering supplementary services: Call Forwarding Busy (CFB)[11].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s cites work is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — cites work (P2860): Recommendation I.254.1 (11/1988): Multiparty supplementary services: Conference calling (CONF)[12].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s cites work is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — cites work (P2860): Recommendation I.254.2 (11/1988): Multiparty supplementary services: Three-Party Supplementary Service (3PTY)[13].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s cites work is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — cites work (P2860): Recommendation I.256.2a (11/1988): Charging supplementary services: Advice of charge (AOC)[14].
  • Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s ITU-T Recommendation is recorded as I.252.2 (11/1988)[15].

Body

Authorship and Creation

Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s publisher is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — publisher (P123): ITU Telecommunication Standardization Sector[3].

Publication

Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)'s publication date is recorded as +1988-11-25T00:00:00Z[6]. Its language of work or name is recorded as Call offering supplementary services: Call Forwarding Busy (CFB) — 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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

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.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB). Retrieved May 3, 2026, from https://4ort.xyz/entity/recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb-
MLA “Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB).” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb-.
BibTeX @misc{4ortxyz_recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb-_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB)}}, year = {2026}, url = {https://4ort.xyz/entity/recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb-}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Recommendation I.252.2 (11/1988): Call offering supplementary services: Call Forwarding Busy (CFB) — https://4ort.xyz/entity/recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb- (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/recommendation-i-252-2-11-1988-call-offering-supplementary-services-call-forwarding-busy-cfb- · Last refreshed: