A.2 Definition of values
3GPP43.010GSM Public Land Mobile Network (PLMN) connection typesRelease 17TS
Unrestricted digital data information:
Transfer of information sequence of bits at its specified bit rate without alteration.
This implies: – bit sequence independence;
– digit sequence integrity;
– bit integrity.
Speech:
Digital representation of speech coded according to a specified encoding rule (e.g. A Law, 3GPP TS 06‑series).
Demand connection:
A PLMN connection is set up at any time on demand via a digital channel in response to signalling information received from subscriber, other MSCs or other networks, i.e. on a per call basis.
Bidirectional symmetric:
This value applies when the information flow characteristics provided by the PLMN connection are the same between two (or more) access points or reference points in the forward and backward directions.
Bidirectional asymmetric (Multislot configurations for data):
This value applies when the information flow characteristics provided by the PLMN connection differ between two (or more) access points or reference points in the forward and backward directions on one or more TCH/Fs. In Multislot configurations for data the asymmetry is downlink biased, i.e. the MS may receive at a greater rate than it transmits.
Point-to-point connection:
This value applies when only two end points are provided by the connection.
Service data unit integrity:
This value applies when:
i) at each user-network interface, protocols provide a mechanism for identifying the boundaries of service data units; and
ii) all bits submitted within a single service data unit are delivered in a corresponding service data unit.
Unstructured:
This value is applicable when the PLMN connection neither provides structural boundaries nor preserves structural integrity.
Annex B (informative):
Location of the transcoding, multiplexing and RA2 functions
The location of the transcoding and data rate adaptation functions used to convert from the data rate used on the radio interface to the 64 kbits/s required by the MSC, is considered in this annex B. There are four alternatives which are equally valid from a connection type point of view. The selection of which alternative to use is not considered in 3GPP TS 43.010. The alternatives are shown in figure 10.
Alternative 1 assumes that all the transcoding and data rate adaptation is located at the BSS end of the A interface.
Alternative 2 assumes that all the transcoding and data rate adaptation is located at the MSC end of the A interface and gives no indication how the information is carried on the link.
Alternative 3 assumes that the information is transferred on the A interface in 8 or 16 kbit/s channels using one of the sub-multiplexing schemes described in CCITT Recommendation I.460. The same sub-multiplexing scheme is used for both speech and data.
Alternative 4 illustrates a multislot connection in which the information is transferred on the A-interface in 64 kbit/s channel into which up to four channels of intermediate rate 16 kbit/s have been multiplexed (refer to 3GPP TS 48.020). Alternative 4 also shows a situation in which a multislot connection of 5 or 6 TCH/Fs is used; the rate between the RA1’/RA1- and RA1’’-functions is 64 kbit/s.
The alternatives explained above correspond to all channels excluding TCH/F14.4 and EDGE.
Alternatives 1b, 2b, 3b, and 4b show similar approaches for channel codings TCH/F14.4, TCH/F28.8, and TCH/F43.2.
It should be noted that in all of the alternatives the transcoding and data rate adaptation are performed on the BSS side of the A-interface and is therefore considered to be a function of the BSS.
In the first three alternatives, the interface at the MSC is always based on 64 kbit/s without sub-multiplexing.
Figure 10: Location of transcoding and rate adaptation
Figure 10 (continued): Location of transcoding and rate adaptation
Figure 10 (concluded): Location of transcoding and rate adaptation
|
Legend |
to Figure 10 |
|
GSC |
= GSM Speech Codec |
|
FEC |
= Forward Error Correction |
|
MPX |
= Multiplex/Demultiplex |
Figure 10 (concluded): Location of transcoding and rate adaptation
Annex C (informative):
Change History
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Change history |
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Date |
TSG # |
TSG Doc. |
CR |
Rev |
Subject/Comment |
Old |
New |
|||||||||
|
– |
S16 |
A001 |
2 |
Data Compression |
5.0.0 |
|||||||||||
|
– |
S16 |
A002 |
Editorial correction to Channel Mode Modify |
5.0.0 |
||||||||||||
|
– |
s21 |
A003 |
V.120 Interworking and RDI |
5.0.0 |
5.1.0 |
|||||||||||
|
– |
s21 |
A004 |
HSCSD |
5.0.0 |
5.1.0 |
|||||||||||
|
– |
s22 |
A005 |
Introduction of 14.4 kbit/s |
5.1.0 |
5.2.0 |
|||||||||||
|
– |
s23 |
A006 |
Editorial modifications |
5.2.0 |
5.3.0 |
|||||||||||
|
– |
s24 |
A007 |
Removal of 2*14.4=19.2 Transparent configuration |
5.3.0 |
5.4.0 |
|||||||||||
|
– |
s27 |
A008 |
Clarification of RA0 adaptation function |
5.4.0 |
7.0.0 |
|||||||||||
|
– |
s27 |
A009 |
Information transfer protocol model updates |
5.4.0 |
7.0.0 |
|||||||||||
|
– |
s29 |
A010 |
Introduction of EDGE channel codings into the specifications |
7.0.0 |
8.0.0 |
|||||||||||
|
12-1999 |
TSG#06 |
A011 |
Service Clean up R99 |
8.0.0 |
8.1.0 |
|||||||||||
|
09-2000 |
TSG#09 |
NP-000551 |
A012 |
32 kbit/s UDI/RDI multimedia in GSM |
8.1.0 |
8.2.0 |
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|
12-2000 |
TSG#10 |
NP-000604 |
A013 |
TCH/F32.0 reference models |
8.2.0 |
8.3.0 |
||||||||||
|
12-2000 |
TSG#10 |
NP-000606 |
A014 |
Removal of BS 30 NT |
8.3.0 |
4.0.0 |
||||||||||
|
03-2001 |
TSG#11 |
NP-010047 |
001 |
Removal of the S-reference point in MS |
4.0.0 |
4.1.0 |
||||||||||
|
03-2001 |
TSG#11 |
NP-010047 |
002 |
Addition changes for removal BS30NT of BS30 NT and packet access |
4.0.0 |
4.1.0 |
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|
03-2001 |
TSG#11 |
NP-010046 |
003 |
Removal of FAX NT in GSM from Rel-4 |
4.0.0 |
4.1.0 |
||||||||||
|
03-2001 |
TSG#11 |
NP-010047 |
004 |
Removal of speech model |
4.0.0 |
4.1.0 |
||||||||||
|
03-2002 |
TSG#15 |
NP-010085 |
005 |
1 |
Terminology Clarifications as requested by TSG GERAN |
4.1.0 |
5.0.0 |
|||||||||
|
09-2002 |
TSG#17 |
NP-020405 |
006 |
1 |
Correction of Rate Adaptation Functions and removal of S Reference Point in MS |
5.0.0 |
5.1.0 |
|||||||||
|
12-2002 |
TSG#18 |
NP-020617 |
007 |
1 |
CS Data Services (including HSCSD and EDGE) for GERAN Iu mode |
5.1.0 |
5.2.0 |
|||||||||
|
12-2004 |
CN#26 |
Upgraded to v6.0.0 |
5.2.0 |
6.0.0 |
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|
06-2007 |
CT#36 |
Upgraded to v7.0.0 |
6.0.0 |
7.0.0 |
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|
12-2008 |
CT#42 |
Upgraded to v8.0.0 |
7.0.0 |
8.0.0 |
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|
12-2009 |
CT#46 |
Automatic upgrade from previous Release |
8.0.0 |
9.0.0 |
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|
03-2011 |
CT#51 |
Automatic upgrade from previous Release version 9.0.0 |
9.0.0 |
10.0.0 |
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|
03-2011 |
CT#51 |
Correction of heading and numbering made by MCC |
10.0.0 |
10.0.1 |
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|
09-2012 |
CT#57 |
Automatic upgrade from previous Release version 10.0.1 |
10.0.1 |
11.0.0 |
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|
09-2014 |
– |
– |
– |
Format of figures 1 to 5 corrected |
11.0.0 |
11.0.1 |
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|
2014-10 |
Automatic upgrade from previous Release |
11.0.1 |
12.0.0 |
|||||||||||||
|
2015-12 |
Automatic upgrade from previous Release |
12.0.0 |
13.0.0 |
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|
Change history |
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|
Date |
TSG # |
TSG Doc. |
CR |
Rev |
Cat |
Subject/Comment |
New |
|||||||||
|
2017-03 |
CT#75 |
14.0.0 |
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|
2018-06 |
SA#80 |
– |
– |
– |
Automatic upgrade from previous Release |
15.0.0 |
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|
2020-07 |
SA#88e |
– |
– |
– |
Update to Rel-16 version (MCC) |
16.0.0 |
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|
2022-03 |
SA#95e |
– |
– |
– |
Update to Rel-17 version (MCC) |
17.0.0 |
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