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TS 22.002
Circuit Bearer Services
supported by a PLMN

Use "3GPP‑Page" to get the Word version, and "ETSI‑search" to get the PDF version
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".
[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 Mode
X
Information Transfer Rate
X
Information Transfer Capability
X
Establishment of Communication
X
Symmetry
X
Communication Configuration
X
Data Compression
-
Access Attributes
Access Channel and Rate
-
Signalling Access Protocols
-
Information Access Protocols
-
Information Access Structure
X
Information Access Rate
X
Interworking Attributes
General Attributes
Supplementary Services Provided
-
Quality of Service
X
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

20
Asynchronous General Bearer Service
Asynch
note 1
3.1 kHz, UDI, RDI
NT / T
-
30
Synchronous General Bearer Service
Synch
note 1
3.1 kHz, UDI, RDI
T
-


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/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
1.2 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
2.4 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
4.8 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
9.6 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
14.4 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
19.2 kbit/s
Asynch
3,1 kHz
-
T
-
-
Supported
-
28.8 kbit/s
Asynch
3,1 kHz
-
T
Supported
Supported
Supported
-

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 Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

0.3 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
1.2 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
2.4 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
4.8 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
9.6 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
14.4 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
19.2 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
28.8 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-
38.4 kbit/s
Asynch
UDI
V.110
T
-
-
Supported
-

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
Note

0.3 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
Note 2
1.2 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
Note 2
2.4 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
Note 2
4.8 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
Note 2
9.6 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
-
14.4 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
-
19.2 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
-
28.8 kbit/s
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
-
-
Asynch
3,1 kHz
-
NT
Supported
Supported
Supported
Note 1

Up
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 Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

0.3 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
Note 1
1.2 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
Note 1
2.4 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
Note 1
4.8 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
Note 1
9.6 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
-
14.4 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
-
19.2 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
-
28.8 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
-
38.4 kbit/s
Asynch
UDI
V.110
NT
Supported
Supported
Supported
-

Fixed Network User Rate
Access Structure
Information Transfer Capability
Rate Adaptation
QoS Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

1.2 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
Note 2
2.4 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
Note 2
4.8 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
Note 2
9.6 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
-
14.4 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
-
19.2 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
-
28.8 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
Note 1
38.4 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
-
48 kbit/s
Asynch
UDI / RDI
V.120
NT
Supported
Supported
Supported
-
56 kbit/s
Asynch
UDI
V.120
NT
-
-
-
-

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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 Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

32 kbit/s
Asynch
UDI
PIAFS
NT
Supported
-
-
-
64 kbit/s
Asynch
UDI
PIAFS
NT
Supported
-
-
-

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 Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

56kbit/s
Asynch
RDI
X.31 flag stuffing
NT
Supported
Supported
Supported
-
64 kbit/s
Asynch
UDI
X.31 flag stuffing
NT
Supported
Supported
Supported
-

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
Notes

1.2 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
2.4 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
4.8 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
9.6 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
14.4 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
19.2 kbit/s
Synch
3,1 kHz
-
T
-
-
Supported
-
28.8 kbit/s
Synch
3,1 kHz
-
T
Supported
Supported
Supported
-

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 Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

1.2 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
2.4 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
4.8 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
9.6 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
14.4 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
19.2 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
28.8 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
38.4 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
48 kbit/s
Synch
UDI
V.110
T
-
-
Supported
-
56 kbit/s
Synch
UDI
V.110
T
Supported
Supported
Supported
-
56 kbit/s
Synch
RDI
-
T
Supported
Supported
Supported
-
64 kbit/s
Synch
UDI
-
T
Supported
Supported
Supported
-

3.1.2.1.3  BS 30 transparent for Multimedia
Fixed Network User Rate
Access Structure
Information Transfer Capability
Rate Adaptation
QoS Attribute
UTRAN
GERAN Iu mode
GERAN A/Gb mode
Notes

28.8 kbit/s
Synch
3.1kHz Audio
H.223 & H.245
T
Supported
Supported
Supported
-
32.0 kbit/s
Synch
UDI
H.223 & H.245
T
Supported
Supported
Supported
-
33.6 kbit/s
Synch
3.1kHz Audio
H.223 & H.245
T
Supported
Supported
Supported
Note 1
56 kbit/s
Synch
RDI
H.223 & H.245
T
Supported
Supported
Supported
-
64 kbit/s
Synch
UDI
H.223 & H.245
T
Supported
Supported
Supported
-

$  Change historyWord‑p. 13

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