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TS 22.002
Circuit Bearer Services
supported by a PLMN

V16.0.0 (PDF)  2020/06  15 p.
V15.0.0  2018/06  15 p.
V14.0.0  2017/03  15 p.
V13.0.0  2015/12  15 p.
V12.0.0  2014/10  15 p.
V11.0.0  2012/09  15 p.
V10.0.0  2011/04  15 p.
V9.0.0  2009/12  15 p.
V8.0.0  2009/01  15 p.
V7.0.0  2007/06  15 p.
V6.0.0  2004/12  15 p.
V5.0.0  2002/07  15 p.
V4.2.0  2001/06  14 p.
V3.6.0  2001/04  14 p.
GSM Rel-98 v7.0.2  1999/12  14 p.
GSM Rel-97 v6.1.1  1999/02  14 p.
GSM Rel-96 v5.3.2  1997/12  18 p.
GSM Phase-2 v4.2.2  1998/06
GSM Phase-1 v3.2.0  1992/02  42 p.
Rapporteur:
Mr. Howell, Andrew

Content for  TS 22.002  Word version:  16.0.0

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0  ScopeWord‑p. 5

The present document defines a set of Circuit Bearer Services to be provided to PLMN subscribers by a PLMN itself and in connection with other networks. This TS should also be used as a reference for defining the corresponding required mobile network capabilities.

0.1  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]
TS 41.004: "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms".
→ to date, withdrawn by 3GPP
[2]
TS 22.001: " Principles of circuit telecommunication services supported by a GSM Public Land Mobile Network (PLMN)".
[3]
TS 22.004: "General on supplementary services".
[4]
TS 27.001: "General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)".
[5]
TS 27.002: "Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities".
[6]
TS 27.003: "Terminal Adaptation Functions (TAF) for services using synchronous bearer capabilities".
[7]
TS 27.005: "Use of Data Terminal Equipment - Data Circuit terminating Equipment (DTE - DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)".
[8]
TS 29.002: "Mobile Application Part (MAP) specification".
[9]
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)".
[10]
TS 29.010: "Information element mapping between Mobile Station - Base Station System and BSS - Mobile-services Switching Centre (MS - BSS - MSC) Signalling procedures and the Mobile Application Part (MAP)".
[11]
TS 29.011: "Signalling interworking for supplementary services".
[12]
ITU-T Recommendation V.120: "Support by an ISDN of data terminal equipments with V-series type interface with provision for statistical multiplexing".
[13]
TR 21.905: "Vocabulary for 3GPP Specifications"
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0.2  Abbreviations

Abbreviations used in this TS are listed in TS 41.004 [1] and TR 21.905.

1  Framework for defining Circuit Bearer ServicesWord‑p. 6

Bearer Services are described by attributes, which are intended to be independent. These attributes are described and defined in TS 22.001. They are grouped into four categories:
  1. Information transfer attributes, which characterize the network capabilities for transferring information from a user access point in a PLMN to a user access point in another network. (Refer to TS 22.001 ).
  2. Access attributes, which describe the means for accessing network functions or facilities as seen at the access point in the PLMN (see TS 22.001).
  3. Interworking attributes, which describe properties of the terminating network and its access point. The terminating network may include another PLMN or the originating PLMN.
  4. General attributes, which deal with the service in general.
Figure 1 shows the relation between the groups of attributes and their fields of applicability.
Reproduction of 3GPP TS 22.002, Figure 1: Relation between the groups of attributes and fields of applicability
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The following table lists the individual attributes in each of the four groups. The Bearer Service definitions in this specification are based on the "Minimal Set" of attributes.
Minimal Set
Information Transfer Attributes
Information Transfer ModeX
Information Transfer RateX
Information Transfer CapabilityX
Establishment of CommunicationX
SymmetryX
Communication ConfigurationX
Data Compression
Access Attributes
Access Channel and Rate
Signalling Access Protocols
Information Access Protocols
Information Access StructureX
Information Access RateX
Interworking Attributes
General Attributes
Supplementary Services Provided
Quality of ServiceX
Operational and Commercial
Attributes that are not part of the minimal set provide further technical detail and are required to fully define the use of each Bearer Service.
See specifications TS 27.001, TS 27.002, TS 27.003, TS 27.005 for information about the Signalling Access Protocols, Information Access Protocols and related access attributes.
Supplementary services are defined in TS 22.004.
Intercommunication is required with services in the PSTN, ISDN and other PLMNs. The capabilities that describe the Interworking Attributes are described in specifications TS 29.002 to TS 29.007 and [15].
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2  Bearer Service categoriesWord‑p. 7

All Bearer Service categories provide information transfer between the reference points and allow the use of sub-rate information streams which are rate-adapted.
The Bearer Services can be grouped into the following categories:
  • Unrestricted Digital Information (UDI);
    Provides the transfer of unrestricted digital information.
  • 3,1 kHz (External to the PLMN);
    Used to select a "3,1 kHz audio" interworking function at the MSC. This service category is used when interworking with the ISDN or PSTN "3,1 kHz audio" service and includes the capability to select a modem at the interworking function. "External to the PLMN" indicates that the "3,1 kHz audio" service is only used outside of the PLMN, in the ISDN/PSTN. The connection within the PLMN, user access point to the interworking function, is an unrestricted digital connection.
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3  Bearer Services

This clause provides a list of the existing Bearer Services and indicates the values for each attribute in the minimal set.
The following attributes have the same value for all Bearer Services. Their values are as follows:
Information Transfer Mode:
"Circuit";
Information Transfer Rate:
Not applicable (note 1);
Establishment of Communication:
"Demand";
Symmetry:
"Bi-directional Symmetric";
Communication Configuration:
"Point to point".
All asynchronous NT Bearer Services may support data compression to enhance user data throughput.
NT Bearer Services 20 may support V.120 interworking, enabling data terminals connected to an UE to interwork with V.120 [12] terminal adapters on the ISDN as shown in the Figure 2 below.
Reproduction of 3GPP TS 22.002, Figure 2: Model of V.120 Interworking
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Table 2 contains the list of the Bearer Services and the values for the remaining attributes in the minimal set.
Bearer Service Number Bearer Service Name Access Structure Access Rate Information Transfer Capability QOS Attribute Notes
20Asynchronous General Bearer ServiceAsynchnote 13.1 kHz, UDI, RDINT / T-
30Synchronous General Bearer ServiceSynchnote 13.1 kHz, UDI, RDIT-
NOTE 1:
This General Bearer is independent of any nominal rate. It is elaborated in more detail in subclause 3.1
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3.1  General bearer service user data characteristicsWord‑p. 8

The Tables below describe the characteristics of the General Bearer Services. The indicated fixed network user rates are possible, but support of General Bearer Service does not imply support of all rates.

3.1.1  BS 20 (asynchronous services)Word‑p. 9

3.1.1.1  BS 20 T (transparent asynchronous services)

3.1.1.1.1  BS 20 transparent in regular mode for analogue interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
0.3 kbit/sAsynch3,1 kHz-T--Supported
1.2 kbit/sAsynch3,1 kHz-T--Supported
2.4 kbit/sAsynch3,1 kHz-T--Supported
4.8 kbit/sAsynch3,1 kHz-T--Supported
9.6 kbit/sAsynch3,1 kHz-T--Supported
14.4 kbit/sAsynch3,1 kHz-T--Supported
19.2 kbit/sAsynch3,1 kHz-T--Supported
28.8 kbit/sAsynch3,1 kHz-TSupportedSupportedSupported
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3.1.1.1.2  BS 20 transparent in regular mode for digital interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
0.3 kbit/sAsynchUDIV.110T--Supported
1.2 kbit/sAsynchUDIV.110T--Supported
2.4 kbit/sAsynchUDIV.110T--Supported
4.8 kbit/sAsynchUDIV.110T--Supported
9.6 kbit/sAsynchUDIV.110T--Supported
14.4 kbit/sAsynchUDIV.110T--Supported
19.2 kbit/sAsynchUDIV.110T--Supported
28.8 kbit/sAsynchUDIV.110T--Supported
38.4 kbit/sAsynchUDIV.110T--Supported
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3.1.1.2  BS 20 NT (non-transparent asynchronous services)Word‑p. 10

3.1.1.2.1  BS 20 non-transparent in regular mode for analogue interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
0.3 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupportedNote 2
1.2 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupportedNote 2
2.4 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupportedNote 2
4.8 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupportedNote 2
9.6 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupported
14.4 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupported
19.2 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupported
28.8 kbit/sAsynch3,1 kHz-NT SupportedSupportedSupported
Asynch3,1 kHz-NTSupportedSupportedSupportedNote 1
NOTE 1:
This is used with high speed modems such as V.90 (56kbit/s). Modem type = 'Autobauding Type 1' is selected. FNUR has no meaning in this case.
NOTE 2:
In case of UTRAN and in GERAN Iu mode the FNURs 300, 1200, 2400 and 4800 bit/s towards the fixed network can be provided only with modem type = 'Autobauding Type 1' is selected.
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3.1.1.2.2  BS 20 non-transparent in regular mode for digital interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
0.3 kbit/sAsynchUDIV.110NT SupportedSupportedSupportedNote 1
1.2 kbit/sAsynchUDIV.110NT SupportedSupportedSupportedNote 1
2.4 kbit/sAsynchUDIV.110NT SupportedSupportedSupportedNote 1
4.8 kbit/sAsynchUDIV.110NT SupportedSupportedSupportedNote 1
9.6 kbit/sAsynchUDIV.110NT SupportedSupportedSupported
14.4 kbit/sAsynchUDIV.110NT SupportedSupportedSupported
19.2 kbit/sAsynchUDIV.110NT SupportedSupportedSupported
28.8 kbit/sAsynchUDIV.110NT SupportedSupportedSupported
38.4 kbit/sAsynchUDIV.110NT SupportedSupportedSupported
NOTE 1:
In case of UTRAN and in GERAN Iu mode the user rates 300, 1200, 2400 and 4800 bit/s towards the fixed network can be provided only for mobile terminated calls.
 
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
1.2 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupportedNote 2
2.4 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupportedNote 2
4.8 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupportedNote 2
9.6 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupported
14.4 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupported
19.2 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupported
28.8 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupportedNote 1
38.4 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupported
48 kbit/sAsynchUDI / RDIV.120NTSupportedSupportedSupported
56 kbit/sAsynchUDI V.120NT---
NOTE 1:
Requires a new code point in V.120 specification to be defined.
NOTE 2:
In case of UTRAN and in GERAN Iu mode the user rates 1200, 2400 and 4800 bit/s toward the fixed network can be provided only for mobile terminated calls.
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3.1.1.2.3  BS 20 non-transparent for PIAFSWord‑p. 11
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
32 kbit/sAsynchUDIPIAFSNTSupported--
64 kbit/sAsynchUDIPIAFSNTSupported--
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3.1.1.2.4  BS 20 non-transparent for Frame Tunnelling Mode
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
56kbit/sAsynchRDIX.31 flag stuffingNTSupportedSupportedSupported
64 kbit/sAsynchUDIX.31 flag stuffingNTSupportedSupportedSupported
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3.1.2  BS 30 (synchronous services)Word‑p. 12

3.1.2.1  BS 30 T (transparent synchronous services)

3.1.2.1.1  BS 30 transparent in regular mode for analogue interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
1.2 kbit/sSynch3,1 kHz-T--Supported
2.4 kbit/sSynch3,1 kHz-T--Supported
4.8 kbit/sSynch3,1 kHz-T--Supported
9.6 kbit/sSynch3,1 kHz-T--Supported
14.4 kbit/sSynch3,1 kHz-T--Supported
19.2 kbit/sSynch3,1 kHz-T--Supported
28.8 kbit/sSynch3,1 kHz-TSupportedSupportedSupported
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3.1.2.1.2  BS 30 transparent in regular mode for digital interworking
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
1.2 kbit/sSynchUDIV.110T--Supported
2.4 kbit/sSynchUDIV.110T--Supported
4.8 kbit/sSynchUDIV.110T--Supported
9.6 kbit/sSynchUDIV.110T--Supported
14.4 kbit/sSynchUDIV.110T--Supported
19.2 kbit/sSynchUDIV.110T--Supported
28.8 kbit/sSynchUDIV.110T--Supported
38.4 kbit/sSynchUDIV.110T--Supported
48 kbit/sSynchUDIV.110T--Supported
56 kbit/sSynchUDIV.110TSupportedSupportedSupported
56 kbit/sSynchRDI-TSupportedSupportedSupported
64 kbit/sSynchUDI-TSupportedSupportedSupported
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3.1.2.1.3  BS 30 transparent for Multimedia
Fixed Network User Rate Access Structure Information Transfer Capability Rate Adaptation QoS attributes UTRAN GERAN Iu mode GERAN A/Gb mode Notes
28.8 kbit/sSynch3.1kHz AudioH.223 & H.245TSupportedSupportedSupported
32.0 kbit/sSynchUDIH.223 & H.245TSupportedSupportedSupported
33.6 kbit/sSynch3.1kHz AudioH.223 & H.245TSupportedSupportedSupportedNote 1
56 kbit/sSynchRDIH.223 & H.245TSupportedSupportedSupported
64 kbit/sSynchUDIH.223 & H.245TSupportedSupportedSupported
NOTE 1:
33.6 kbit/s FNURs is applicable only for UTRAN.
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$  Change historyWord‑p. 13


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