3 Bearer Services

22.0023GPPCircuit Bearer Services (BS) supported by a Public Land Mobile Network (PLMN)TS

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".

NOTE 1: The Information Transfer Rate attribute is not applicable because it depends on the reference point assumed in the PLMN, transit or terminating network.

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.

Figure 2: Model of V.120 Interworking

Table 2 contains the list of the Bearer Services and the values for the remaining attributes in the minimal set.

Table 2

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

Note 1: This General Bearer is independent of any nominal rate. It is elaborated in more detail in subclause 3.1

3.1 General bearer service user data characteristics

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)

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)

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

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.

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

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 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

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.

3.1.1.2.3 BS 20 non-transparent for PIAFS

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)

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

NOTE 1: 33.6kbit/s FNURs is applicable only for UTRAN.

Annex A (informative):
Change history

Change history

TSG SA#

SA Doc.

SA1 Doc

Spec

CR

Rev

Rel

Cat

Subject/Comment

Old

New

WI

Jun 1999

02.02

Transferred to 3GPP SA1

8.0.0

3.0.0

SP-05

SP-99479

S1-99608

22.002

001

R99

D

Editorial changes for alignment

3.0.0

3.1.0

SP-05

SP-99446

S1-99659

22.002

002

R99

B

Bearer Services

3.0.0

3.1.0

SP-06

SP-99520

S1-991008

22.002

003

R99

B

Addition of new general bearer service user data characteristics for 33.6kbit/s modem, FTM and multimedia calls

3.1.0

3.2.0

SP-06

SP-99520

S1-991075

22.002

004

R99

C

22.002 made only applicable to CS Domain.

3.1.0

3.2.0

SP-07

SP-000054

S1-000132

22.002

005

R99

F

Corrections on 3,1 kHz Audio support

3.2.0

3.3.0

SP-08

SP-000192

S1-000274

22.002

006

R99

F

Lower User Rates in UMTS for Circuit Switched Data Services

3.3.0

3.4.0

SP-09

SP-000371

S1-000561

22.002

007

R99

F

32 kbit/s UDI/RDI multimedia in GSM

3.4.0

3.5.0

SP-09

SP-000390

S1-000595

22.002

008

R4

C

Deletion of bearer service BS 30 NT

3.4.0

4.0.0

SP-11

SP-010039

S1-010253

22.002

010

Rel-4

C

CR to 22.002 clarification on Circuit Switched Bearer Services in UMTS

4.0.0

4.1.0

CS Bearers in UMTs

SP-11

SP-010040

S1-010254

22.002

011

Rel-4

D

Restructuring of 22.002

4.0.0

4.1.0

CS Bearers in UMTs

SP-11

SP-010040

S1-010266

22.002

012

Rel-4

D

Restructuring of tables in section 3.1

4.0.0

4.1.0

CS Bearers in UMTs

SP-12

SP-010257

S1-010357

22.002

013

Rel-4

F

Corrections to erroneous implementation of CRs SP-010039 and SP-010040 to 22.002.

4.1.0

4.2.0

TEI4

SP-16

SP-020244

S1-021076

22.002

014

Rel-5

F

CR to 22.002 Correction of terminology and references

4.2.0

5.0.0

TEI5

SP-26

SP-040744

S1-040997

22.002

Rel-6

Updated from Rel-5 to Rel-6

5.0.0

6.0.0

SP-36

22.002

Rel-7

Updated from Rel-6 to Rel-7

6.0.0

7.0.0

SP-42

–

–

Rel-8

Updated from Rel-7 to Rel-8

7.0.0

8.0.0

2009-12

–

–

–

–

–

–

–

Update to Rel-9 version (MCC)

8.0.0

9.0.0

2011-03

–

–

–

–

–

–

–

Update to Rel-10 version (MCC)

9.0.0

10.0.0

2012-09

–

–

–

–

–

–

–

Update to Rel-11 version (MCC)

10.0.0

11.0.0

2014-10

–

–

–

–

–

–

–

Update to Rel-12 version (MCC)

11.0.0

12.0.0

2015-12

Update to Rel-13 version (MCC)

12.0.0

13.0.0

2017-03

–

–

–

–

–

–

–

Updated to Rel-14 by MCC

13.0.0

14.0.0

2018-06

–

–

–

–

–

–

–

Updated to Rel-15 by MCC

14.0.0

15.0.0

2020-07

–

–

–

–

–

–

–

Updated to Rel-16 by MCC

15.0.0

16.0.0

2022-03

–

–

–

–

–

–

–

Updated to Rel-17 by MCC

16.0.0

17.0.0