2 References, abbreviations and definitions
3GPP48.020Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interfaceRelease 17TS
2.1 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
– References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
– For a specific reference, subsequent revisions do not apply.
– For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1] 3GPP TR 21.905: " Vocabulary for 3GPP specifications ".
[2] 3GPP TS 22.034: "High Speed Circuit Switched Data (HSCSD) – Stage1"
[3] 3GPP TS 43.010: "GSM Public Land Mobile Network (PLMN) connection types".
[4] 3GPP TS 23.034: "High Speed Circuit Switched Data (HSCSD) – Stage2".
[5] 3GPP TS 44.021: "Rate adaption on the Mobile Station ‑ Base Station System (MS ‑ BSS) interface".
[6] 3GPP TS 24.022: "Radio Link Protocol (RLP) for Circuit Switched Bearer and Teleservices".
[7] 3GPP TS 45.003: "Channel coding".
[8] 3GPP TS 27.001: "General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)".
[9] 3GPP TS 48.008: "Mobile Switching Centre ‑ Base Station System (MSC ‑ BSS) interface; Layer 3 specification".
[10] 3GPP TS 29.007: "General requirements on interworking between the Public Land Mobile Network (PLMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)".
[11] ITU-T Recommendation V.110: "Support of data terminal equipment’s (DTEs) with V-Series interfaces by an integrated services digital network".
[12] ITU-T Recommendation I.460:-Multiplexing, rate adaption and support of existing interfaces.
[13] 3GPP TS 48.060: "In-band control of remote transcoders and rate adaptors for full rate traffic channels"
[14] 3GPP TS 25.415: "UTRAN Iu Interface user plane protocols".
2.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
FPS Frame Pattern Substitution
FSI Frame Start Identifier
ZSP Zero Sequence Position
2.3 Definitions
For the purposes of the present document, the following terms and definitions apply.
Substream: Stream of data with explicit or implicit numbering between splitter and combine functions.
Channel: A physical full rate channel on the radio interface (TCH/F) independent of the contents.
A interface circuit: The 8 bits that constitute one 64 kbps circuit on the A interface.
A interface subcircuit: One specific bit position or one specific pair of bit positions within the A interface circuit.
EDGE channel: A general term referring to channels based on 8PSK modulation; i.e. TCH/F28.8, TCH/F32.0, and TCH/F43.2.