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Glossary

TCH/F (A full rate TCH) in 3GPP: meaning and where it is specified

Published 2026-10-16Updated 2026-10-16

At a glance

Term
TCH/F
Stands for
A full rate TCH
Defined in
3GPP TR 21.905 V19.2.0, clause 4
Used in
TS 27.001, TS 45.001, TS 45.002

In plain words

TCH/F means "A full rate TCH", with TCH denoting traffic channel, in the vocabulary entry in 3GPP TR 21.905. TS 45.002 calls it a full rate traffic channel, and TS 45.001 includes it among the traffic channel types it lists. TS 27.001 discusses the intermediate rate used per each TCH/F as derived from the chosen channel type.

Source: 3GPP TR 21.905 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/21_series/21.905/21905-j20.zip

Sources

  1. 3GPP TR 21.905 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/21_series/21.905/21905-j20.zip
  2. 3GPP TS 45.002 V19.0.0, clause 3.2.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/45_series/45.002/45002-j00.zip
  3. 3GPP TS 45.001 V18.0.0, clause 2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/45_series/45.001/45001-i00.zip
  4. 3GPP TS 27.001 V17.0.0, clause A. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/27_series/27.001/27001-h00.zip

How this page was made

The facts box comes straight from the 3GPP TDoc list and specification archive as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.