A.1 Attribute definition and their values

3GPP43.010GSM Public Land Mobile Network (PLMN) connection typesRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

Information transfer mode:

This attribute describes the operational mode for transferring (transportation and switching) user information through a PLMN connection in the network.

Value: – Circuit

Information transfer capability:

This attribute describes the capability associated with the transfer of different types of information through a PLMN connection.

Values: – Unrestricted digital information

– Speech

– Group 3 facsimile

– 3.1 kHz audio ex PLMN

– Restricted digital information (Note: this value is signalled in the "Other ITC" element, due to a lack of further code points in the "ITC" element.)

Information transfer rate:

This attribute describes either the bit rate (circuit mode) or the throughput (packet mode, for further study). It refers to the transfer of digital information on a PLMN connection.

Values: – Appropriate bit rate

– Throughput rate

Establishment of connection:

This attribute describes the mode of establishment used to establish and release PLMN connections.

Value: – Demand

Symmetry:

This attribute describes the relationship of information flow between two (or more) access points or reference points involved in a PLMN connection.

Values: – Bidirectional symmetric

– Bidirectional asymmetric (Multislot configurations for data)

Connection configuration:

This attribute describes the spatial arrangement for transferring information on a given PLMN connection.

Value: – Point-to-point

Structure:

This attribute refers to the capability of a PLMN connection to deliver information to the destination access point or reference point in a structure that was presented in a corresponding signal structured at the origin (access point or reference point).

Values: – Service data unit integrity (see note 1)

– Unstructured (see note 2)

NOTE 1: Applicable for connection element "non transparent".

NOTE 2: Applicable for connection element "transparent".

Channel rate:

This attribute describes the channels and their bit rate used to transfer the user information and/or signalling information.

Value: – Name of channel (designation) and/or the corresponding bit rate

NOTE 3: This attribute can be used several times for connection characterization.

Connection control protocol, information transfer coding/protocol (layer 1 to 3):

These attributes characterize the protocols on the connection control and/or user information transfer channel.

Value: – Appropriate protocol for each layer

NOTE 4: This attribute can be used several times for connection characterization.

Synchronous/Asynchronous:

This attribute describes the type of transmission between the reference access points.

Values: – Synchronous

– Asynchronous

Negotiation:

This attribute describes the possibility of inband parameter exchange (according to V.110) between reference access points.

Value: – In band negotiation not possible

User Rate:

This element is relevant between the IWF and the fixed network.

Values: – 0.3 kbit/s

– 1.2 kbit/s

– 2.4 kbit/s

– 4.8 kbit/s

– 9.6 kbit/s

Intermediate rate:

This attribute defines the intermediate rate (according to 3GPP TS 48.020 and ITU-T V.110) at the A interface connection element part.

Values: – 8 kbit/s

– 16 kbit/s

Fixed network user rate FNUR:

This element is relevant between the MSC and the fixed network.

Values: – 9.6 kbit/s

– 14.4 kbit/s

– 19.2 kbit/s

– 28.8 kbit/s

– 32.0 kbit/s

– 38.4 kbit/s

– 48.0 kbit/s

– 56.0 kbit/s

– 64.0 kbit/s

Acceptable channel coding(s) ACC:

This attribute indicates the channel codings acceptable to the MS. This parameter is given at call set-up and it is non negotiable.

Values: 4.8 kbit/s

and/or 9.6 kbit/s

and/or 14.4 kbit/s

and/or 28.8 kbit/s

and/or 32.0 kbit/s

and/or 43.2 kbit/s

Maximum number of TCH/Fs (Multislot configurations for data):

This attribute is given at call set-up and it enables the mobile user to limit the number of TCH/Fs used during the call.

Values: 1

7 (note 5)

8 (note 5)

NOTE 5: Not used by the currently specified services.

Wanted air interface user rate (AIUR):

This attribute is applicable to non-transparent services only, and it gives the AIUR that the mobile user wants and which the network tries to achieve but which it is not allowed to exceed.

Values: Not applicable

9.6 kbit/s

14.4 kbit/s

19.2 kbit/s

28.8 kbit/s

38.4 kbit/s

43.2 kbit/s

57.6 kbit/s

User initiated modification indication (Multislot configurations for data):

This element is relevant between the MT and the IWF.

Values: – User initiated modification not requested

– User initiated modification up to 1 TCH/F requested

– User initiated modification up to 2 TCH/F requested

– User initiated modification up to 3 TCH/F requested

– User initiated modification up to 4 TCH/F requested

The parameters where it is indicated that they are related to Multislot configurations for data are optional.

For multislot configuration, the following applies to the parameters contained in the BC-IE:

– Half rate channels are not supported. The MS shall code the radio channel requirement as "Full rate support only MS" or "Dual rate support MS, full rate preferred". In the second case, the network shall assign full rate channel(s) only.

– The "fixed network user rate" and "other modem type" take precedence over the "user rate" and "modem type", except for modem types “autobauding”, “modem for undefined interface” or “none”.

– The "intermediate rate" parameter is overridden. The intermediate rate used per each TCH/F is derived from the chosen channel type:

channel type IR per TCH/F

TCH/F4.8 8 kbit/s

TCH/F9.6 16 kbit/s

TCH/F14.4 16 kbit/s (on the A interface but 32 kbit/s inside the MS)

– The user rate per TCH is derived from the chosen channel type:

channel type user rate per TCH

TCH/F4.8 4.8 kbit/s

TCH/F9.6 9.6 kbit/s

TCH/F14.4 14.4 kbit/s

For CE: T, the padding procedure described in 3GPP TS 44.021 can be applied.

Network independent clocking on Tx:

This attribute defines the usage of NIC at the reference access point in the transmit direction.

Values: – Not required

– Required

Network independent clocking on Rx:

This attribute defines the usage of NIC at the reference access point in the receive direction.

Values: – Not accepted

– Accepted

Number of stop bits:

This attribute describes the number of stop bits for the asynchronous type of transmission between reference access points.

Values: – 1 bit

– 2 bit

Number of data bits excluding parity if present:

This attribute describes the number of data bits for a character oriented mode of transmission between reference access points.

Values: – 7 bit

– 8 bit

Parity information:

This attribute describes the type of parity information for a character oriented mode of transmission between the reference access points.

Values: – Odd

– Even

– None

– Forced to 0

– Forced to 1

Duplex mode:

This attribute describes the kind of transmission of the PLMN between reference access points.

Value: – Full duplex

Modem type:

This attribute describes the modem allocated by the IWF/MSC in the case of a 3.1 kHz audio used outside the PLMN information transfer capability.

Values: – V.21

– V.22

– V.22bis

– V.26ter

– V.32

– Autobauding type 1

None

Other Modem Type (OMT):

This element is relevant between the MS and IWF.

Values: – No other modem type

– V.34

Compression

This attribute describes the possible usage of data compression between the reference access points. In the network to MS direction, it indicates the possibility of using data compression. In the MS to network direction, it indicates the allowance of data compression.

Values: – Data compression not possible/not allowed

– Data compression possible/allowed (see note 6)

NOTE 6: Only applicable for the asynchronous transmission between the reference access points, if connection element is "non transparent".

Radio channel requirement:

This attribute describes the available channels for the transfer of the user information between the reference access points.

Values: – Full rate channel (Bm)

– Half rate channel (Lm)

– dual rate/full rate preferred

– Dual rate/half rate preferred

Negotiation of Intermediate Rate Requested (NIRR)

This attribute indicates if 6 kbit/s radio interface rate is requested.

Values: – NIRR not requested/not accepted

– NIRR requested/accepted

Connection element:

This attribute describes the possible usage of layer 2 protocol between the reference access points.

Values: – Transparent

– Non-transparent (RLP)

– Both, transparent preferred

– Both, non transparent preferred

User information layer 2 protocol:

This attribute describes the layer 2 relay protocol used between the reference access points in non‑transparent transmissions.

Values: – ISO 6429, code set 0

– X.25 (note 7)

– Character oriented protocol with no flow control

NOTE 7: This value was used by services defined for former 3GPP releases and does not need to be supported.

Signalling access protocol:

This attribute characterizes the protocol on the signalling or user information transfer channel at the mobile reference access point.

Values: – I.440/450

– X.21 (note 7)

– X.28, dedicated PAD, individual NUI (note 7)

– X.28, dedicated PAD, universal NUI (note 7)

– X.28, non dedicated PAD (note 7)

– X.32 (note 7)

NOTE 7: This value was used by services defined for former 3GPP releases and does not need to be supported.

Rate adaptation:

This attribute describes the rate adaptation used at the fixed reference access point.

Values: – V.110/X.30

– X.31 flag stuffing (note 7)

– No rate adaptation

– V.120 (Note: This value is signalled in the "Other Rate Adaption" element, due to a lack of further code points in the "Rate Adaptation" element.)

NOTE 7: This value was used by services defined for former 3GPP releases and does not need to be supported.

Coding standard:

This attribute refers to the structure of the BC-IE defined in the 3GPP TS 24.008.

Value: – GSM

User information layer 1 protocol:

This attribute characterizes the layer 1 protocol to be used at the Um interface according to the 3GPP TS 45.001.

Value: – Default

Rate adaption header/no header: