9 Message functional definitions and contents
3GPP44.056CTS radio interface layer 3 specificationGSM Cordless Telephony System (CTS), Phase 1Release 17TS
This subclause defines the structure of the messages of those layer 3 protocols defined in GSM 04.56. These are standard L3 messages as defined in GSM 04.07 with the exception of those sent on the SCH, ARCH.
Each definition given in the present subclause includes:
a) a brief description of the message direction and use, including whether the message has:
1. Local significance, i.e. relevant only on the originating or terminating access;
2. Access significance, i.e. relevant in the originating and terminating access, but not in the CTS‑FP;
3. Dual significance, i.e. relevant in either the originating or terminating access and in the network; or
4. Global significance, i.e. relevant in the originating and terminating access and in the network.
b) a table listing the information elements known in the message and their order of their appearance in the message. All information elements that may be repeated are explicitly indicated. (V and LV formatted IEs, which compose the imperative part of the message, occur before T, TV, and TLV formatted IEs which compose the non-imperative part of the message, see GSM 04.07.) In a (maximal) sequence of consecutive information elements with half octet length, the first information element with half octet length occupies bits 1 to 4 of octet N, the second bits 5 to 8 of octet N, the third bits 1 to 4 of octet N+1 etc. Such a sequence always has an even number of elements.
For each information element the table indicates:
1. the information element identifier, in hexadecimal notation, if the IE has format T, TV, or TLV. Usually, there is a default IEI for an information element type; default IEIs of different IE types of the same protocol are different. If the IEI has half octet length, it is specified by a notation representing the IEI as a hexadecimal digit followed by a "-" (example: B-).
NOTE: The same IEI may be used for different information element types in different messages of the same protocol.
2. the name of the information element (which may give an idea of the semantics of the element). The name of the information element (usually written in italics) followed by "IE" or "information element" is used in GSM 04.08 as reference to the information element within a message.
3. the name of the type of the information element (which indicates the coding of the value part of the IE), and generally, the referenced subclause of clause 10 of GSM 04.08 describing the value part of the information element.
4. the presence requirement indication (M, C, or O) for the IE as defined in GSM 04.07.
5. The format of the information element (T, V, TV, LV, TLV) as defined in GSM 04.07.
6. The length of the information element (or permissible range of lengths), in octets, in the message, where "?" means that the maximum length of the IE is only constrained by link layer protocol, and in the case of the Facility IE by possible further conditions specified in GSM 04.10. This indication is non-normative.
c) subclauses specifying, where appropriate, conditions for IEs with presence requirement C or O in the relevant message which together with other conditions specified in GSM 04.08 define when the information elements shall be included or not, what non-presence of such IEs means, and – for IEs with presence requirement C – the static conditions for presence and/or non-presence of the IEs (see GSM 04.07).
9.1 Messages for Radio Resources management
Table 9.1/GSM 04.56 summarises the messages for Radio Resources management.
Table 9.1.1/GSM 04.56: Messages for Radio Resources management
Channel establishment messages: |
Reference |
CTS IMMEDIATE ASSIGNMENT |
9.1.21 |
CTS IMMEDIATE ASSIGNMENT EXTENDED |
9.1.22 |
CTS IMMEDIATE ASSIGNMENT REJECT |
9.1.23 |
Ciphering messages: |
Reference |
CTS CIPHERING MODE COMMAND |
9.1.14 |
CTS CIPHERING MODE COMPLETE |
9.1.15 |
Channel release messages: |
Reference |
CTS CHANNEL RELEASE |
9.1.13 |
Handover message: |
Reference |
CTS INTRACELL HANDOVER COMMAND |
9.1.24 |
CTS INTRACELL HANDOVER COMPLETE |
9.1.25 |
CTS INTRACELL HANDOVER FAILURE |
9.1.26 |
Paging messages: |
Reference |
CTS GROUP ALERTING REQUEST |
9.1.19 |
CTS PAGING REQUEST |
9.1.31 |
CTS PAGING RESPONSE |
9.1.32 |
CTS HUNTING REQUEST |
9.1.20 |
Alive check messages: |
Reference |
Miscellaneous messages: |
Reference |
CTS ACCESS REQUEST |
9.1.1 |
CTS CHANNEL MODE MODIFY |
9.1.11 |
CTS CHANNEL MODE MODIFY ACKNOWLEGDE |
9.1.12 |
CTS CLASSMARK CHANGE |
9.1.16 |
CTS CLASSMARK ENQUIRY |
9.1.17 |
CTS FREQUENCY HOPPING DEFINITION |
9.1.18 |
CTS MEASUREMENT REPORT |
9.1.27 |
CTS RR STATUS |
|
System messages: |
Reference |
CTS SYSTEM INFORMATION TYPE 1 |
9.1.33 |
CTS SYSTEM INFORMATION TYPE 2 |
9.1.34 |
CTS SYSTEM INFORMATION TYPE 3 |
9.1.35 |
9.1.1 CTS access request
This message is sent in random mode on the ARCH. It does not follow the basic format. The possible formats are presented directly below, without reference to information fields. The order of bit transmission is defined in GSM 04.04.
The message is only 25 bits long, coded as shown in figure 9.1.1/GSM 04.56.
25 1
+————————————————-+
|CAUSE| CTSMSI |
+————————————————-+
Figure 9.1.1/GSM 04.56: CTS ACCESS REQUEST message content
CAUSE (octet 1)
This information field indicates the reason for requesting the access to a CTS‑FP. This field has a fixed length (3 bits).
CTSMSI
This information field contains the individual Mobile Subscriber Identity. See GSM 03.03.
Table 9.1.2/GSM 04.56: CTS ACCESS REQUEST cause
3bits Code |
Cause |
000 |
Alive Check Response |
001 |
MM procedures (Attachment, Re-attachment or detachment) |
010 |
Reserved for future use |
011 |
MS-originated call |
100 |
Answer to paging |
101 |
Enrolment |
110 |
Reserved for future use |
111 |
Reserved for future use |
NOTE: Reserved for future use values shall not be used by the mobile station on ARCH. If such message is received by the CTS‑FP, it may be ignored.
9.1.2 CTS AFA monitoring command
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to instruct the CTS‑MS to perform as soon as possible AFA interference measurements.
Message type: CTS AFA MONITORING COMMAND
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.3/GSM 04.56: CTS AFA MONITORING COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS AFA Monitoring |
Message Type |
M |
V |
1 |
|
Command Message Type |
subclause 10.4 |
||||
AFA Monitoring Frequency List |
Frequency list GSM 04.08 subclause 10.5.2.13 |
M |
LV |
||
NAMC |
AFA Monitoring Cycles |
M |
V |
2 |
9.1.3 CTS AFA monitoring enquiry
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to request for AFA monitoring results report.
Message type: CTS AFA MONITORING ENQUIRY
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.4/GSM 04.56: CTS AFA MONITORING ENQUIRY message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS AFA Monitoring |
Message Type |
M |
V |
1 |
|
Enquiry Message Type |
subclause 10.4 |
9.1.4 CTS AFA monitoring report
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to report AFA monitoring results.
Message type: CTS AFA MONITORING REPORT
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.5/GSM 04.56: CTS AFA MONITORING REPORT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS AFA Monitoring |
Message Type |
M |
V |
1 |
|
Report Message Type |
subclause 10.4 |
||||
AFA Interference Level |
AFA Interference Level |
M |
LV |
||
NAMC real |
AFA Monitoring Cycles |
M |
V |
2 |
9.1.5 CTS BCCH detection command
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to instruct the CTS‑MS to perform as soon as possible the BCCH detection procedure.
Message type: CTS BCCH DETECTION COMMAND
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.7/GSM 04.56: CTS BCCH DETECTION COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS BCCH Detection |
Message Type |
M |
V |
1 |
|
Command Message Type |
subclause 10.4 |
||||
BCCH Detection |
Frequency list |
M |
LV |
||
Frequency List |
GSM 04.08 subclause 10.5.2.13 |
9.1.6 CTS BCCH detection enquiry
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to request for a BCCH detection report.
Message type: CTS BCCH DETECTION ENQUIRY
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.8/GSM 04.56: CTS BCCH DETECTION ENQUIRY message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS BCCH Detection |
Message Type |
M |
V |
1 |
|
Enquiry Message Type |
subclause 10.4 |
9.1.7 CTS BCCH detection report
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to report the table of BCCH detection status.
Message type: CTS BCCH DETECTION REPORT
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.9/GSM 04.56: CTS BCCH DETECTION REPORT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS BCCH Detection |
Message Type |
M |
V |
1 |
|
Report Message Type |
subclause 10.4 |
||||
BCCH Detection Status |
BCCH Detection Status |
M |
LV |
||
9.1.8 CTS beacon channel synchronisation burst information
This message is sent on the CTSBCH‑SB. Its purpose is to . It does not follow the basic format. Its length is 25 bits.
Message type: BEACON CHANNEL SYNCHRONISATION BURST
Significance: dual
Direction: CTS‑FP to CTS‑MSs
8 7 6 5 4 3 2 1
+———————————————–+
|Sta- |PCH |Shift| | FPBI | octet 1
| tus |ind. |ind. | TNC | (high) |
+———————————————–|
| FPBI | octet 2
| (middle part) |
+———————————————–|
| FPBI | octet 3
| (middle part) |
+———————————————–|
|FPBI |
|(low)|
+—–+
Figure 9.1.2/GSM 04.56: Beacon Channel synchronisation burst information element
Table 9.1.10/GSM 04.56: Beacon Channel synchronisation burst information element
Status (octet 1 bit 8) PCH indicator (octet 1 bit 7) Shifting indicator (octet 1 bit 6) TNC (octet 1 bit 5 to 3) |
9.1.9 CTS channel mode modify
This message is sent on the main DCCH from the CTS‑FP to the CTS‑MS to request the setting of the mode for the indicated channel. See table 9.6/GSM 04.08.
Message type: CTS CHANNEL MODE MODIFY
Significance: local
Direction: CTS‑FP to CTS‑MS
9.1.10 CTS channel mode modify acknowledge
This message is sent on the main DCCH from the CTS‑MS to the CTS‑FP to indicate the successful or unsuccessful execution of a channel mode modify request. See table 9.7/GSM 04.08.
Message type: CTS CHANNEL MODE MODIFY ACKNOWLEDGE
Significance: local
Direction: CTS‑FP to CTS‑MS
9.1.11 CTS channel release
This message is sent on the main DCCH from the CTS‑FP to the CTS‑MS to initiate deactivation of the dedicated channel. . See table 9.1.11/GSM 04.56.
Message type: CTS CHANNEL RELEASE
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.11/GSM 04.56: CTS CHANNEL RELEASE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Channel Release |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
RR Cause |
RR Cause |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.2.31 |
9.1.12 CTS ciphering mode command
This message is sent on the main DCCH from the CTS‑FP to the CTS‑MS to indicate that the CTS‑FP has started deciphering and that enciphering and deciphering shall be started in the mobile station, or to indicate that ciphering will not be performed. See table 9.1.12/GSM 04.56.
Message type: CTS CIPHERING MODE COMMAND
Significance: dual
Direction: CTS‑FP to CST‑MS
Table 9.1.12/GSM 04.56: CTS CIPHERING MODE COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Cipher Mode Command |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Ciphering Mode Setting |
Cipher Mode Setting |
M |
V |
1/2 |
|
GSM 04.08 subclause 10.5.2.9 |
|||||
Cipher Response |
Cipher Response |
M |
V |
1/2 |
|
GSM 04.08 subclause 10.5.2.10 |
9.1.13 CTS ciphering mode complete
This message is sent on the main DCCH from the CTS‑MS to the CTS‑FP to indicate that enciphering and deciphering has been started in the MS. See table 9.1.13/GSM 04.56
Message type: CTS CIPHERING MODE COMPLETE
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.13/GSM 04.56: CTS CIPHERING MODE COMPLETE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Cipher Mode Complete |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
17 |
Mobile Equipment |
Mobile Identity |
O |
TLV |
3-11 |
Identity |
9.1.14 CTS classmark change
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to indicate a classmark change or a response to a classmark enquiry. See table 9.12/GSM 04.08.
Message type: CTS CLASSMARK CHANGE
Significance: dual
Direction: CTS‑MS to CTS‑FP
9.1.15 CTS classmark enquiry
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to request classmark information. See table 9.12a/GSM 04.08.
Message type: CTS CLASSMARK ENQUIRY
Significance: dual
Direction: CTS‑FP to CTS‑MS
9.1.16 CTS frequency hopping definition
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to indicate the frequency list and the frequency hopping parameters to be used. See table 9.1.14/GSM 04.56.
Message type: CTS FREQUENCY HOPPING REDEFINITION
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.14/GSM 04.56: CTS FREQUENCY HOPPING DEFINITION message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Frequency definition |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Reference Time |
Starting Time |
M |
V |
3 |
|
GSM 04.08 |
|||||
TFH Current Parameters |
TFH Current Parameters |
M |
V |
8-n |
|
TFH General Parameter |
TFH General Parameters |
O |
V |
10 |
|
TFH List |
Frequency list |
O |
V |
3-n |
|
GSM 04.08 subclause 10.5.2.13 |
9.1.16.1 Reference time
The reference time information element indicates the time when the values given by the TFH current parameters IE are relevant.
9.1.17 CTS group alerting request
This message is sent on the CTSPCH by the CTS‑FP to the mobile stations in order to initiate a connectionless group alerting procedure. The mobile stations are identified by their connectionless group CTSMSI. See table 9.1.15/GSM 04.56.
Message type: CTS GROUP ALERTING REQUEST
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.15/GSM 04.56: CTS GROUP ALERTING REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Group Alerting Request |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Connectionless Group |
CTSMSI |
M |
LV |
||
CTS Mobile Subscriber Identity |
subclause 10.5.2.x |
||||
Information Transfer Capability |
Information Transfer Capability |
M |
V |
1/2 |
|
Spare Half Octet |
Spare Half Octet |
M |
V |
1/2 |
|
GSM 04.08 subclause 10.5.1.8 |
|||||
Calling Party BCD Number |
Calling Party BCD Number |
M |
LV |
||
GSM 04.08 subclause 10.5.4.9 |
|||||
Rest Octets |
Rest Octets |
M |
V |
||
subclause 10.5.2.23 |
9.1.17.1 Rest Octets
The sum of the length of this IE and the L2 Pseudo Length of the message equals 22.
9.1.18 CTS hunting request
This message is sent on the CTSPCH by the CTS‑FP to mobile stations to make a group of mobile station alert for location purpose. The mobile station are identified by their Connectionless Group CTSMSI See table 9.16/GSM 04.56.
Message type: CTS HUNTING REQUEST
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.16/GSM 04.56: CTS HUNTING REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Hunting Request |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Connectionless Group |
CTSMSI |
M |
V |
3 |
|
CTS Mobile Subscriber Identity |
subclause 10.5.2.x |
||||
Rest Octets |
Rest Octets |
M |
V |
17 |
|
subclause 10.5.2.23 |
9.1.18.1 Rest Octets
The sum of the length of this IE and the L2 Pseudo Length of the message equals 22.
9.1.19 CTS immediate assignment
This message is sent on the CTSAGCH by the CTS‑FP to the CTS‑MS in idle mode to change the channel configuration to a dedicated configuration. See table 9.1.17/GSM 04.56.
Message type: CTS IMMEDIATE ASSIGNMENT
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.17/GSM 04.56: CTS IMMEDIATE ASSIGNMENT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS L1 information |
CTS L1 information |
M |
V |
3 |
|
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Channel Description |
CTS Channel Description |
M |
V |
3 |
|
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference |
|||||
Rest Octets |
Rest Octets |
M |
V |
10 |
|
9.1.20 CTS immediate assignment extended
This message is sent on the hopping CTSAGCH by the CTS‑FP to two CTS‑MSs in idle mode to change their channel configurations to a dedicated configurations. See table 9.1.18/GSM 04.56.
This message has a L2 Pseudo Length of 16.
Message type: CTS IMMEDIATE ASSIGNMENT EXTENDED
Significance: dual
Direction: CTS‑FP to CTS‑MSs
Table 9.1.18/GSM 04.56: CTS IMMEDIATE ASSIGNMENT EXTENDED message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS L1 Information |
CTS L1 Information |
M |
V |
3 |
|
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
GSM 0408 subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Channel Description 1 |
CTS Channel Description |
M |
V |
3 |
|
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference 1 |
|||||
Channel Description 2 |
CTS Channel Description |
M |
V |
3 |
|
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference 2 |
|||||
Rest Octets |
Rest Octets |
M |
V |
3 |
|
9.1.21 CTS immediate assignment reject
This message is sent on the CTSAGCH by the CTS‑FP to up to three CTS‑MSs to indicate that no channel is available for assignment. See table 9.1.19/GSM 04.56.
This message has a L2 Pseudo Length of 22.
Message type: CTS IMMEDIATE ASSIGNMENT REJECT
Significance: dual
Direction: CTS‑FP to CTS‑MSs
Table 9.1.19/GSM 04.56: CTS IMMEDIATE ASSIGNMENT REJECT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS L1 information |
CTS L1 information |
M |
V |
3 |
|
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
GSM 0408 subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference 1 |
|||||
Wait Indication 1 |
Wait Indication |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.2.43 |
|||||
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference 2 |
|||||
Wait Indication 2 |
Wait Indication |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.2.43 |
|||||
Access Request |
CTS Access Request Reference |
M |
V |
4 |
|
Reference 3 |
|||||
Wait Indication 3 |
Wait Indication |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.2.43 |
|||||
Rest Octets |
Rest octets |
M |
V |
2 |
|
9.1.21.1 Use of Indexes
An Access Request information element and the following Wait Indication information element refer to the same CTS‑MS.
9.1.21.2 Filling of the message
If necessary, the Access Request Reference information element and the wait indication information element should be duplicated to fill the message
9.1.22 CTS intracell handover command
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to change the dedicated channel configuration
Message type: CTS INTRACELL HANDOVER COMMAND
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.20/GSM 04.56: CTS INTRACELL HANDOVER COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Channel Description |
CTS Channel Description |
M |
V |
3 |
|
Starting Time |
Starting Time |
M |
V |
3 |
|
GSM 04.08 subclause 10.5.2.38 |
|||||
Channel Mode |
Channel Mod |
O |
V |
2 |
|
GSM 04.08 subclause 10.5.2.6 |
9.1.23 CTS intracell handover complete
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to indicate that the CTS-MS has established the main signalling link.
Message type: CTS INTRACELL HANDOVER COMPLETE
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.21/GSM 04.56: CTS INTRACELL HANDOVER COMPLETE message content
IEI |
Information element |
Type / Référence |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
RR Cause |
RR Cause |
M |
V |
2 |
|
GSM 04.08 subclause 10.5.2.31 |
9.1.24 CTS intracell handover failure
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to indicate that the CTS-MS has failed to seize the new channel.
Message type: CTS INTRACELL HANDOVER COMMAND
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.22/GSM 04.56: CTS INTRACELL HANDOVER COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Immediate Assignment |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Channel Description |
CTS Channel Description |
M |
V |
3 |
|
Starting Time |
Starting Time |
M |
V |
2 |
|
GSM 04.08 subclause 10.5.2.38 |
9.1.25 CTS measurement report
This message is sent on the SACCH by the CTS‑MS to the CTS‑FP to report measurement results about the dedicated channel. See table 9.1.23/GSM 04.56.
Message type: CTS MEASUREMENT REPORT
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.23/GSM 04.56: CTS SYSTEM INFORMATION TYPE 1 message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Measurement Report |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Measurement Results |
Measurement Results |
M |
V |
16 |
|
GSM 04.08 subclause 10.5.2.20 |
9.1.25.1 Measurement results
For CTS purpose, the NO‑NCELL‑M field (number of neighbouring cell measurements) shall be set to No neighbour cell measurement result (000) in the Measurement Result IEI and therefore, RXLEV‑NCELLi, BS‑FREQ‑NCELLi and BSISC‑NCELLi field (1 <= i <= 6) shall be coded with a "0" in each bit.
9.1.26 CTS OFO measurement command
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to instruct the CTS‑MS to perform as soon as possible OFO measurements.
Message type: CTS OFO MEASUREMENT COMMAND
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.24/GSM 04.56: CTS OFO MEASUREMENT COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS OFO Measurement |
Message Type |
M |
V |
1 |
|
Command Message Type |
subclause 10.4 |
||||
OFO Measurement BCCH |
Frequency list |
M |
LV |
||
Frequency List |
GSM 04.08 subclause 10.5.2.13 |
9.1.27 CTS OFO measurement enquiry
This message is sent on the main DCCH by the CTS‑FP to the CTS‑MS to request for OFO measurement results report.
Message type: CTS OFO MEASUREMENT ENQUIRY
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.25/GSM 04.56: CTS OFO MEASUREMENT ENQUIRY message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS OFO Measurement |
Message Type |
M |
V |
1 |
|
Enquiry Message Type |
subclause 10.4 |
9.1.28 CTS OFO Measurement report
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP to report AFA monitoring results.
Message type: CTS OFO MEASUREMENT REPORT
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.26/GSM 04.56: CTS OFO MEASUREMENT REPORT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS OFO Measurement |
Message Type |
M |
V |
1 |
|
Report Message Type |
subclause 10.4 |
||||
OFO Measurement Results |
OFO Measurement Result |
M |
LV |
||
9.1.29 CTS paging request
This message is sent on the CTSPCH by the CTS‑FP to CTS‑MSs. It may be sent to a CTS‑MS in idle mode to trigger channel access. The CTS‑MS are identified by their CTSMSIs. See table 9.x/GSM 04.56.
This message has a L2 Pseudo Length of 19.
Message type: CTS PAGING REQUEST
Significance: dual
Direction: CTS‑FP to CTS‑MS
Table 9.1.27/GSM 04.56: CTS PAGING REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Paging Request |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Mobile Identity 1 |
CTSMSI |
M |
V |
3 |
|
subclause 10.5.2.1 |
|||||
Mobile Identity 2 |
CTSMSI |
M |
V |
3 |
|
subclause 10.5.2.1 |
|||||
Mobile Identity 3 |
CTSMSI |
M |
V |
3 |
|
subclause 10.5.2.1 |
|||||
Mobile Identity 4 |
CTSMSI |
M |
V |
3 |
|
subclause 10.5.2.1 |
|||||
Paging type 1 |
Paging type |
M |
V |
1 |
|
subclause 10.5.2.12 |
|||||
Paging type 2 |
Paging type |
M |
V |
1 |
|
subclause 10.5.2.12 |
|||||
Paging type 3 |
Paging type |
M |
V |
1 |
|
subclause 10.5.2.12 |
|||||
Paging type 4 |
Paging type |
M |
V |
1 |
|
subclause 10.5.2.12 |
|||||
Rest Octets |
M |
V |
4 |
||
9.1.29.1 Paging type
The Paging type x Information Element is related to the Mobile Identity x Information Element.
9.1.30 CTS paging response
This message is sent on the main DCCH by the CTS‑MS to the CTS‑FP in connection with establishment of the main signalling link as a response to the paging request message. See table 9.1.28/GSM 04.56.
Message type: CTS PAGING RESPONSE
Significance: dual
Direction: CTS‑MS to CTS‑FP
Table 9.1.28/GSM 04.56: CTS PAGING RESPONSE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS Paging Response |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Ciphering Key Sequence |
Ciphering Key Sequence |
M |
V |
1/2 |
|
Number |
Number |
||||
GSM 04.08 subclause 10.5.1.2 |
|||||
Spare Half Octet |
Spare Half Octet |
M |
V |
1/2 |
|
subclause 10.5.1.8 |
|||||
Mobile Station |
Mobile Station |
M |
LV |
4 |
|
Classmark |
Classmark 2 |
||||
GSM 0408 subclause 10.5.1.6 |
|||||
Mobile Identity |
Mobile Identity |
M |
LV |
2-9 |
|
GSM 04.08 subclause 10.5.1.4 |
9.1.30.1 Ciphering Key Sequence
For CTS purpose, the key sequence value shall be set to No key is available (1 1 1) value in the Ciphering key Sequence IEI by the CTS‑MS.
9.1.31 CTS system information type 1
This message is sent on the CTSPCH by the CTS‑FP to all the CTS‑MSs within the cell giving information about the TFH List to be used. See table 9.1.29/GSM 04.56.
Message type: CTS SYSTEM INFORMATION TYPE 1
Significance: dual
Direction: CTS‑FP to CTS‑MSs
Table 9.1.29/GSM 04.56: CTS SYSTEM INFORMATION TYPE 1 message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
L2 Pseudo Length |
L2 Pseudo Length |
M |
V |
1 |
|
subclause 10.5.2.19 |
|||||
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS System Info. Type 1 |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Starting Time |
Starting Time |
M |
V |
2 |
|
GSM 04.08 subclause 10.5.2.38 |
|||||
TFH List |
Frequency List |
M |
LV |
||
Rest Octet |
M |
||||
9.1.31.1 Starting Time
The starting time information element indicates when the new TFH list apply.
9.1.32 CTS system information type 2
This message is sent on the CTSPCH by the CTS‑FP to all the CTS‑MSs within the cell giving information about the hopping parameters to be used. See table 9.1.30/GSM 04.56.
Message type: CTS SYSTEM INFORMATION TYPE 2
Significance: dual
Direction: CTS‑FP to CTS‑MSs
Table 9.1.30/GSM 04.56: CTS SYSTEM INFORMATION TYPE 2 message content
IEI |
Information element |
Type / Référence |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS System Info. Type 2 |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Starting Time |
Starting Time |
M |
V |
2 |
|
GSM 04.08 subclause 10.5.2.38 |
|||||
TFH New Current Parameters |
TFH Current parameters |
M |
LV |
||
Rest Octet |
M |
||||
9.1.33 CTS system information type 3
This message is sent on the CTSPCH by the CTS‑FP to all the CTS‑MSs in order to invalidate the hopping parameters used by the CTS‑MSs and to detach all the CTS‑MSs. See table 9.1.31/GSM 04.56.
Message type: CTS SYSTEM INFORMATION TYPE 3
Significance: dual
Direction: CTS‑FP to CTS‑MSs
Table 9.1.31/GSM 04.56: CTS SYSTEM INFORMATION TYPE 3 message content
IEI |
Information element |
Type / Référence |
Presence |
Format |
Length |
RR management |
Protocol Discriminator |
M |
V |
1/2 |
|
Protocol Discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS System Info. Type 2 |
Message Type |
M |
V |
1 |
|
Message Type |
subclause 10.4 |
||||
Starting Time |
Starting Time |
M |
V |
2 |
|
GSM 04.08 subclause 10.5.2.38 |
|||||
Rest Octet |
M |
||||
9.1.34 CTS RR parameters update
This message is sent by the fixed part to the mobile station to provide RR parameters. See table 9.1.32/GSM 04.56
Message type: CTS RR PARAMETERS UPDATE
Significance: dual
Direction: fixed part to mobile station
Table 9.1.32/GSM 04.56: CTS RR PARAMETERS UPDATE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
RR management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS RR parameters update |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |
||||
74 |
CTS selection parameters |
CTS selection parameters |
O |
TV |
3 |
subclause 10.5.3.12 |
|||||
75 |
CTS RR parameters |
CTS RR parameters |
O |
TV |
5 |
subclause 10.5.3.13 |
|||||
76 |
Timeslot shifting parameters |
Timeslot shifting parameters |
O |
TV |
4 |
subclause 10.5.3.14 |
9.2 Messages for mobility management
Table 9.2.1/GSM 04.56 summarises the messages for mobility management.
Table 9.2.1/GSM 04.56: Messages for mobility management
Attach/detach messages: |
Reference |
CTS ATTACH REQUEST |
9.2.1 |
CTS ATTACH ACCEPT |
9.2.2 |
CTS ATTACH REJECT |
9.2.3 |
CTS DETACH INDICATION |
9.2.4 |
Enrolment messages: |
Reference |
CTS ENROLMENT REQUEST |
9.2.7 |
CTS ENROLMENT ACCEPT |
9.2.8 |
CTS ENROLMENT REJECT |
9.2.9 |
CTS DE-ENROLMENT INDICATION |
9.2.10 |
Authentication messages: |
Reference |
CTS MS AUTHENTICATION REQUEST |
9.2.11 |
CTS MS AUTHENTICATION RESPONSE |
9.2.12 |
CTS FP AUTHENTICATION RESPONSE |
9.2.13 |
CTS MS AUTHENTICATION REJECT |
9.2.14 |
Identity messages: |
Reference |
CTSMSI UPDATE COMMAND |
9.2.15 |
CTSMSI UPDATE COMPLETE |
9.2.16 |
9.2.1 CTS attach request
This message is sent by the mobile station to the fixed part to indicate to request attachment on this fixed part. See table 9.2.2/GSM 04.56.
Message type: CTS ATTACH REQUEST
Significance: dual
Direction: mobile station to fixed part
Table 9.2.2/GSM 04.56: CTS ATTACH REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS attach request |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |
||||
CTS Ciphering Key Sequence |
Ciphering Key Sequence |
M |
V |
1/2 |
|
Number |
Number |
||||
GSM 04.08 subclause 10.5.1.2 |
|||||
Attach type |
Attach type |
M |
V |
1/2 |
|
subclause 10.5.3.11 |
|||||
Mobile Station |
Mobile Station |
M |
V |
1 |
|
Classmark |
Classmark 1 |
||||
GSM 04.08 subclause 10.5.1.5 |
|||||
Mobile identity |
Mobile identity |
M |
LV |
2 – 9 |
|
subclause 10.5.1.1 |
9.2.2 CTS attach accept
This message is sent by the fixed part to the mobile station to indicate that the requested attachment has been accepted. See table 9.2.3/GSM 04.56
Message type: CTS ATTACH ACCEPT
Significance: dual
Direction: fixed part to mobile station
Table 9.2.3/GSM 04.56: CTS ATTACH ACCEPT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS attach accept |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
TC3252 |
TC3252 |
M |
V |
1 |
|
subclause 10.5.3.10 |
|||||
01 |
CTS mobile group list |
CTS mobile group list |
O |
TLV |
5 – 26 |
subclause 10.5.3.7 |
|||||
02 |
Access right identity |
Access right identity |
O |
TV |
4 |
subclause 10.5.3.9 |
|||||
A1 |
Follow on proceed |
Follow on proceed |
O |
T |
1 |
GSM 04.08 subclause 10.5.3.7 |
9.2.3 CTS attach reject
This message is sent by the fixed part to the mobile station to indicate that the requested attachment has been rejected. See table 9.2.4/GSM 04.56.
Message type: CTS ATTACH REJECT
Significance: dual
Direction: fixed part to mobile station
Table 9.2.4/GSM 04.56: CTS ATTACH REJECT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS attach reject |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Fixed part identity |
Fixed part identity |
M |
LV |
2 – 10 |
|
subclause 10.5.3.6 |
|||||
Reject cause |
Reject cause |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.3.6 |
9.2.4 CTS detachment indication
This message is sent by the mobile station to the fixed part to indicate the detachment of this fixed part. See table 9.2.5/GSM 04.56.
Message type: CTS DETACH INDICATION
Significance: dual
Direction: mobile station to fixed part
Table 9.2.5/GSM 04.56: CTS DETACH INDICATION message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS detach indication |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Mobile Station |
Mobile Station |
M |
V |
1 |
|
Classmark |
Classmark 1 |
||||
GSM 04.08 subclause 10.5.1.5 |
|||||
Mobile identity |
Mobile identity |
M |
LV |
2 – 9 |
|
subclause 10.5.1.1 |
9.2.5 CTS enrolment request
This message is sent by the mobile station to the fixed part to indicate to request enrolment on this fixed part. See table 9.2.8/GSM 04.56.
Message type: CTS ENROLMENT REQUEST
Significance: dual
Direction: mobile station to fixed part
Table 9.2.8/GSM 04.56: CTS ENROLMENT REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS enrolment request |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Mobile Station |
Mobile Station |
M |
V |
1 |
|
Classmark |
Classmark 1 |
||||
GSM 04.08 subclause 10.5.1.5 |
|||||
Mobile identity |
Mobile identity |
M |
LV |
2 – 9 |
|
subclause 10.5.1.1 |
|||||
A2 |
Following attach request |
Following attach request |
O |
T |
1 |
subclause 10.5.3.8 |
9.2.6 CTS enrolment accept
This message is sent by the fixed part to the mobile station to indicate that the requested enrolment has been accepted. See table 9.2.9/GSM 04.56
Message type: CTS ENROLMENT ACCEPT
Significance: dual
Direction: fixed part to mobile station
Table 9.2.9/GSM 04.56: CTS ENROLMENT ACCEPT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS enrolment accept |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Fixed part identity |
Fixed part identity |
M |
LV |
2 – 10 |
|
subclause 10.5.3.6 |
|||||
Mobile identity |
Mobile identity |
M |
LV |
2 – 9 |
|
subclause 10.5.1.1 |
9.2.7 CTS enrolment reject
This message is sent by the fixed part to the mobile station to indicate that the requested enrolment has been rejected. See table 9.2.10/GSM 04.56.
Message type: CTS ENROLMENT REJECT
Significance: dual
Direction: fixed part to mobile station
Table 9.2.10/GSM 04.56: CTS ENROLMENT REJECT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS enrolment reject |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Fixed part identity |
Fixed part identity |
M |
LV |
2 – 10 |
|
subclause 10.5.3.6 |
|||||
Reject cause |
Reject cause |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.3.6 |
9.2.8 CTS de-enrolment indication
This message is sent by the fixed part to the mobile station to indicate that the mobile station is no more enrolled on this fixed part. See table 9.2.11/GSM 04.56.
Message type: CTS DE-ENROLMENT INDICATION
Significance: dual
Direction: fixed part to mobile station
Table 9.2.11/GSM 04.56: CTS DE-ENROLMENT INDICATION message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS de-enrolment indication |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Fixed part identity |
Fixed part identity |
M |
LV |
2 – 10 |
|
subclause 10.5.3.6 |
|||||
Reject cause |
Reject cause |
M |
V |
1 |
|
GSM 04.08 subclause 10.5.3.6 |
9.2.9 CTS MS authentication request
This message is sent by the fixed part to request authentication of the mobile station. See table 9.2.12/GSM 04.56.
Message type: CTS MS AUTHENTICATION REQUEST
Significance: dual
Direction: fixed part to mobile station
Table 9.2.12/GSM 04.56: CTS MS AUTHENTICATION REQUEST message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS MS authentication request |
Message type |
M |
V |
1 |
|
message type |
subclause 10.4 |
||||
Ciphering key sequence |
Ciphering key sequence |
M |
V |
1/2 |
|
number |
number |
||||
GSM 04.08 subclause 10.5.1.2 |
|||||
Spare half octet |
Spare half octet |
M |
V |
1/2 |
|
GSM 04.08 subclause 10.5.1.8 |
|||||
Authentication |
Auth. parameter CH |
M |
V |
16 |
|
parameter CH1 |
subclause 10.5.3.3 |
||||
03 |
Authentication |
Auth. parameter RIMS |
O |
TV |
9 |
parameter RIMS |
subclause 10.5.3.1 |
9.2.10 CTS MS authentication response
This message is sent by the mobile station to the fixed part to deliver a calculated response to the fixed part and to request authentication of the fixed part. See table 9.2.13/GSM 04.56.
Message type: CTS MS AUTHENTICATION RESPONSE
Significance: dual
Direction: mobile station to fixed part
Table 9.2.13/GSM 04.56: CTS MS AUTHENTICATION RESPONSE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS MS authentication |
Message type |
M |
V |
1 |
|
Response message type |
subclause 10.4 |
||||
Authentication |
Auth. parameter XRES |
M |
V |
16 |
|
Parameter SRES1 |
subclause 10.5.3.4 |
||||
Authentication |
Auth. parameter CH |
M |
V |
16 |
|
Parameter CH2 |
subclause 10.5.3.3 |
||||
04 |
Authentication |
Auth. parameter RIFP |
O |
TV |
9 |
Parameter RIFP |
subclause 10.5.3.2 |
9.2.11 CTS FP authentication response
This message is sent by the fixed part to the mobile station to deliver a calculated response to the mobile station. See table 9.2.14/GSM 04.56.
Message type: CTS FP AUTHENTICATION RESPONSE
Significance: dual
Direction: fixed part to mobile station
Table 9.2.14/GSM 04.56: CTS FP AUTHENTICATION RESPONSE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS FP authentication response |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |
||||
Authentication |
Auth. parameter XRES |
M |
V |
16 |
|
Parameter SRES2 |
subclause 10.5.3.4 |
9.2.12 CTS MS authentication reject
This message is sent by the fixed part to the mobile station to indicate that the authentication has failed (and that the receiving mobile station shall abort all activities). See table 9.2.15/GSM 04.56.
Message type: CTS MS AUTHENTICATION REJECT
Significance: dual
Direction: fixed part to mobile station
Table 9.2.15/GSM 04.56: CTS MS AUTHENTICATION REJECT message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTS MS authentication reject |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |
||||
Fixed part identity |
Fixed part identity |
M |
LV |
2 – 10 |
|
subclause 10.5.3.6 |
9.2.13 CTSMSI update command
This message is sent by the fixed part to the mobile station to update the CTSMSI. See table 9.2.16/GSM 04.56.
Message type: CTSMSI UPDATE COMMAND
Significance: dual
Direction: fixed part to mobile station
Table 9.2.16/GSM 04.56: CTS MSI UPDATE COMMAND message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTSMSI update command |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |
||||
Mobile identity |
Mobile identity |
M |
LV |
2 – 9 |
|
subclause 10.5.1.1 |
9.2.14 CTSMSI update complete
This message is sent by the mobile station to the fixed part to indicate that the update of the CTSMSI has taken place. See table 9.2.17/GSM 04.56.
Message type: CTSMSI UPDATE COMPLETE
Significance: dual
Direction: mobile station to fixed part
Table 9.2.17/GSM 04.56: CTSMSI UPDATE COMPLETE message content
IEI |
Information element |
Type / Reference |
Presence |
Format |
Length |
CTS mobility management |
Protocol discriminator |
M |
V |
1/2 |
|
Protocol discriminator |
subclause 10.2 |
||||
Sub-Protocol Discriminator |
Sub-Protocol Discriminator |
M |
V |
1/2 |
|
subclause 10.3.1 |
|||||
CTSMSI update complete |
Message type |
M |
V |
1 |
|
Message type |
subclause 10.4 |