Tech-invite3GPPspaceIETF RFCsSIP
Quick21222324252627282931323334353637384‑5x

Content for  TS 27.007  Word version:  17.6.0

Top   Top   Up   Prev   Next
1…   4…   5…   6…   6.10…   6.20…   7…   7.10…   7.20…   7.30…   7.40…   8…   8.10…   8.20…   8.30…   8.40…   8.50…   8.55   8.56…   8.60…   8.70…   8.80…   9…   10…   10.1.3…   10.1.10…   10.1.20…   10.1.30…   10.1.40…   10.1.50…   10.1.60…   10.1.70…   10.2…   11…   12…   13…   14…   15…   16…   17…   18…   A   B   C…   E   F   G…

 

7  Network service related commandsWord‑p. 59

7.0  General |R8|Word‑p. 59

This clause describes network related commands, which are not covered in call control clause of the present document. Commands include supplementary service handling, MSISDN query, MT and network facility locking, and network registration information query.

7.1  Subscriber number +CNUMWord‑p. 59

Command Possible response(s)
+CNUM +CNUM: [<alpha1>],<number1>,<type1>[,<speed>,<service>[,<itc>]] [<CR><LF>+CNUM: [<alpha2>],<number2>,<type2>[,<speed>,<service>[,<itc>]]
[...]]
+CME ERROR: <err>
+CNUM=?
Description
Action command returns the MSISDNs related to the subscriber (this information can be stored in the SIM/UICC or in the MT). When storing information in the SIM/UICC, if the currently selected card slot contains a SIM card or a UICC with an active GSM application, the information is stored in the EFMSISDN under DFTelecom. If the currently selected card slot contains a UICC with an active USIM application, the information is stored in the EFMSISDN under ADFUSIM). If subscriber has different MSISDN for different services, each MSISDN is returned on a separate line. Refer clause 9.2 for possible <err> values.
Defined values
<alphax>
optional alphanumeric string associated with <numberx>; used character set should be the one selected with command select TE character set +CSCS
<numberx>
string type phone number of format specified by <typex>
<typex>
type of address octet in integer format (refer TS 24.008, clause 10.5.4.7)
<speed>
integer type as defined in clause 6.7
<service>
integer type (service related to the phone number)
0
asynchronous modem
1
synchronous modem
2
PAD Access (asynchronous)
3
Packet Access (synchronous)
4
voice
5
fax
all other values below 128 are reserved by the present document
<itc>
integer type (information transfer capability)
0
3,1 kHz
1
UDI
Implementation
Optional.
Up

7.2  Network registration +CREGWord‑p. 60

Command Possible response(s)
+CREG=[<n>] +CME ERROR: <err>
+CREG? +CREG: <n>,<stat>[,[<lac>],[<ci>],[<AcT>][,<cause_type>,<reject_cause>]]
+CREG=? +CREG: (list of supported <n>s)
Description
Set command controls the presentation of an unsolicited result code +CREG: <stat> when <n>=1 and there is a change in the MT's circuit mode network registration status in GERAN/UTRAN/E-UTRAN, or unsolicited result code +CREG: <stat>[,[<lac>],[<ci>],[<AcT>]] when <n>=2 and there is a change of the network cell in GERAN/UTRAN/E-UTRAN. The parameters <AcT>, <lac> and <ci> are sent only if available. The value <n>=3 further extends the unsolicited result code with [,<cause_type>,<reject_cause>], when available, when the value of <stat> changes.
Read command returns the status of result code presentation and an integer <stat> which shows whether the network has currently indicated the registration of the MT. Location information elements <lac>, <ci> and <AcT>, if available, are returned only when <n>=2 and MT is registered in the network. The parameters [,<cause_type>,<reject_cause>], if available, are returned when <n>=3. Refer clause 9.2 for possible <err> values.
Test command returns values supported as a compound value.
Defined values
<n>
integer type
0 (default)
disable network registration unsolicited result code
1
enable network registration unsolicited result code +CREG: <stat>
2
enable network registration and location information unsolicited result code +CREG: <stat>[,[<lac>],[<ci>],[<AcT>]]
3
enable network registration, location information and cause value information unsolicited result code +CREG: <stat>[,[<lac>],[<ci>],[<AcT>][,<cause_type>,<reject_cause>]]
<stat>
integer type; circuit mode registration status.
0
not registered, MT is not currently searching a new operator to register to
1
registered, home network
2
not registered, but MT is currently searching a new operator to register to
3
registration denied
4
unknown (e.g. out of GERAN/UTRAN/E-UTRAN coverage)
5
registered, roaming
6
registered for "SMS only", home network (applicable only when <AcT> indicates E-UTRAN)
7
registered for "SMS only", roaming (applicable only when <AcT> indicates E-UTRAN)
8
attached for emergency bearer services only (see NOTE 2) (not applicable)
9
registered for "CSFB not preferred", home network (applicable only when <AcT> indicates E-UTRAN)
10
registered for "CSFB not preferred", roaming (applicable only when <AcT> indicates E-UTRAN)
11
attached for access to RLOS (see NOTE 2a) (applicable only when <AcT> indicates E-UTRAN)
<lac>
string type; two byte location area code (when <AcT> indicates value 0 to 6), or tracking area code (when <AcT> indicates value 7). In hexadecimal format (e.g. "00C3" equals 195 in decimal).
<ci>
string type; four byte GERAN/UTRAN/E-UTRAN cell ID in hexadecimal format.
<AcT>
integer type; access technology of the serving cell.
0
GSM
1
GSM Compact
2
UTRAN
3
GSM w/EGPRS (see NOTE 3)
4
UTRAN w/HSDPA (see NOTE 4)
5
UTRAN w/HSUPA (see NOTE 4)
6
UTRAN w/HSDPA and HSUPA (see NOTE 4)
7
E-UTRAN
8
EC-GSM-IoT (A/Gb mode) (see NOTE 5)
9
E-UTRAN (NB-S1 mode) (see NOTE 6)
10
E-UTRA connected to a 5GCN (see NOTE 7) (not applicable)
11
NR connected to a 5GCN (see NOTE 7) (not applicable)
12
NG-RAN (not applicable)
13
E-UTRA-NR dual connectivity (see NOTE 8)
<cause_type>
integer type; indicates the type of <reject_cause>.
0
Indicates that <reject_cause> contains an MM cause value, see TS 24.008 Annex G.
1
Indicates that <reject_cause> contains a manufacturer specific cause.
<reject_cause>
integer type; contains the cause of the failed registration. The value is of type as defined by <cause_type>.
Implementation
Optional.
This command is not applicable to UEs in NG-RAN.
Up

7.3  PLMN selection +COPSWord‑p. 62

Command Possible response(s)
+COPS=[<mode>[,<format> [,<oper>[,<AcT>]]]] +CME ERROR: <err>
+COPS? +COPS: <mode>[,<format>,<oper>[,<AcT>]]
+CME ERROR: <err>
+COPS=? +COPS: [list of supported (<stat>,long alphanumeric <oper>,short alphanumeric <oper>,numeric <oper>[,<AcT>])s][,,(list of supported <mode>s),(list of supported <format>s)]
+CME ERROR: <err>
Description
Set command forces an attempt to select and register to the GSM/UMTS/EPS/5GS network operator using the SIM/USIM card installed in the currently selected card slot. <mode> is used to select whether the selection is done automatically by the MT or is forced by this command to operator <oper> (it shall be given in format <format>) to a certain access technology, indicated in <AcT>. <regtype> indicates if the registration procedure shall be performed for disaster roaming service (see TS 24.501). If <regtype> is not included then the UE performs a normal registration i.e. a registration not for disaster roaming service (see TS 24.501). If the selected operator is not available, no other operator shall be selected (except <mode>=4). If the selected access technology is not available, then the same operator shall be selected in other access technology. The selected operator name format shall apply to further read commands (+COPS?) also. <mode>=2 forces an attempt to deregister from the network. The selected mode affects to all further network registration (e.g. after <mode>=2, MT shall be unregistered until <mode>=0 or 1 is selected). Refer clause 9.2 for possible <err> values. This command should be abortable when registration/deregistration attempt is made.
Read command returns the current mode, the currently selected operator and the current Access Technology. If no operator is selected, <format>, <oper> and <AcT> are omitted.
Test command returns a set of five parameters, each representing an operator present in the network. A set consists of an integer indicating the availability of the operator <stat>, long and short alphanumeric format of the name of the operator, numeric format representation of the operator and access technology. Any of the formats may be unavailable and should then be an empty field. The list of operators shall be in order: home network, networks referenced in SIM or active application in the UICC (GSM or USIM) in the following order: HPLMN selector, User controlled PLMN selector, Operator controlled PLMN selector and PLMN selector (in the SIM or GSM application), and other networks.
It is recommended (although optional) that after the operator list TA returns lists of supported <mode>s and <format>s. These lists shall be delimited from the operator list by two commas.
The access technology selected parameters, <AcT>, should only be used in terminals capable to register to more than one access technology. Selection of <AcT> does not limit the capability to cell reselections, even though an attempt is made to select an access technology, the phone may still re-select a cell in another access technology.
Defined values
<mode>
integer type
0 (default)
automatic (<oper> field is ignored)
1
manual (<oper> field shall be present, and <AcT> optionally)
2
deregister from network
3
set only <format> (for read command +COPS?), do not attempt registration/deregistration (<oper> and <AcT> fields are ignored); this value is not applicable in read command response
4
manual/automatic (<oper> field shall be present); if manual selection fails, automatic mode (<mode>=0) is entered
<format>
integer type
0 (default)
long format alphanumeric <oper>
1
short format alphanumeric <oper>
2
numeric <oper>
<regtype>
integer type
0 (default)
register not for disaster roaming service.
1
register for disaster roaming service.
<oper>
string type; <format> indicates if the format is alphanumeric or numeric; long alphanumeric format can be upto 16 characters long and short format up to 8 characters (refer GSM MoU SE.13 [9]); numeric format is the Location Area Identification number (refer TS 24.008, clause 10.5.1.3) which consists of a three BCD digit country code coded as in ITU-T Recommendation E.212 [10] Annex A, plus a two BCD digit network code, which is administration specific; returned <oper> shall not be in BCD format, but in IRA characters converted from BCD; hence the number has structure: (country code digit 3)(country code digit 2)(country code digit 1)(network code digit 3)(network code digit 2)(network code digit 1)
<stat>
integer type
0
unknown
1
available
2
current
3
forbidden
4
forbidden and supports disaster roaming
<AcT>
integer type; access technology selected
0 (default)
GSM
1
GSM Compact
2
UTRAN
3
GSM w/EGPRS (see NOTE 1)
4
UTRAN w/HSDPA (see NOTE 2)
5
UTRAN w/HSUPA (see NOTE 2)
6
UTRAN w/HSDPA and HSUPA (see NOTE 2)
7
E-UTRAN
8
EC-GSM-IoT (A/Gb mode) (see NOTE 3)
9
E-UTRAN (NB-S1 mode) (see NOTE 4)
10
E-UTRA connected to a 5GCN (see NOTE 5)
11
NR connected to a 5GCN (see NOTE 5)
12
NG-RAN
13
E-UTRA-NR dual connectivity (see NOTE 6)
Implementation
Optional.
Up

7.4  Facility lock +CLCKWord‑p. 65

Command Possible response(s)
+CLCK=<fac>,<mode>[,<passwd>[,<class>]] +CME ERROR: <err>
when <mode>=2 and command successful:
+CLCK: <status>[,<class1> [<CR><LF>+CLCK: <status>,<class2>
[...]]
+CLCK=? +CLCK: (list of supported <fac>s)
+CME ERROR: <err>
Description
Execute command is used to lock, unlock or interrogate a MT or a network facility <fac>. Password is normally needed to do such actions. When querying the status of a network service (<mode>=2) the response line for 'not active' case (<status>=0) should be returned only if service is not active for any <class>. Refer clause 9.2 for possible <err> values. This command should be abortable when network facilities are set or interrogated.
Call barring facilities are based on supplementary services (refer TS 22.088). The interaction of these with other commands based on other supplementary services is described in the specification of the relevant supplementary service.
Test command returns facility values supported as a compound value.
Defined values
<fac>
values reserved by the present document:
"CS"
CNTRL (lock CoNTRoL surface (e.g. phone keyboard))
"PS"
PH-SIM (lock PHone to SIM/UICC card installed in the currently selected card slot) (MT asks password when other than current SIM/UICC card inserted; MT may remember certain amount of previously used cards thus not requiring password when they are inserted)
"PF"
lock Phone to the very First inserted SIM/UICC card (also referred in the present document as PH-FSIM) (MT asks password when other than the first SIM/UICC card is inserted)
"SC"
SIM (lock SIM/UICC card installed in the currently selected card slot) (SIM/UICC asks password in MT power-up and when this lock command issued)
"AO"
BAOC (Barr All Outgoing Calls) (refer TS 22.088, clause 1)
"OI"
BOIC (Barr Outgoing International Calls) (refer TS 22.088, clause 1)
"OX"
BOIC-exHC (Barr Outgoing International Calls except to Home Country) (refer TS 22.088, clause 1)
"AI"
BAIC (Barr All Incoming Calls) (refer TS 22.088, clause 22.088 [6] clause 2)
"IR"
BIC-Roam (Barr Incoming Calls when Roaming outside the home country) (refer TS 22.088, clause 22.088 [6] clause 2)
"NT"
barr incoming calls from numbers Not stored to TA memory
"NM"
barr incoming calls from numbers Not stored to MT memory
"NS"
barr incoming calls from numbers Not stored to SIM/UICC memory
"NA"
barr incoming calls from numbers Not stored in Any memory
"AB"
All Barring services (refer TS 22.030) (applicable only for <mode>=0)
"AG"
All outGoing barring services (refer TS 22.030) (applicable only for <mode>=0)
"AC"
All inComing barring services (refer TS 22.030) (applicable only for <mode>=0)
"FD"
SIM card or active application in the UICC (GSM or USIM) fixed dialling memory feature (if PIN2 authentication has not been done during the current session, PIN2 is required as <passwd>)
"PN"
Network Personalization (refer TS 22.022)
"PU"
network sUbset Personalization (refer TS 22.022)
"PP"
service Provider Personalization (refer TS 22.022)
"PC"
Corporate Personalization (refer TS 22.022)
<mode>
integer type
0
unlock
1
lock
2
query status
<status>
integer type
0
not active
1
active
<passwd>
string type; shall be the same as password specified for the facility from the MT user interface or with command Change Password +CPWD
<classx>
is a sum of integers each representing a class of information (default 7 - voice, data and fax):
1
voice (telephony)
2
data (refers to all bearer services; with <mode>=2 this may refer only to some bearer service if TA does not support values 16, 32, 64 and 128)
4
fax (facsimile services)
8
short message service
16
data circuit sync
32
data circuit async
64
dedicated packet access
128
dedicated PAD access
Implementation
The call barring supplementary service control is mandatory for MT supporting AT commands only and not supporting the control through dial command D.
Up

7.5  Change password +CPWDWord‑p. 67

Command Possible response(s)
+CPWD=<fac>,<oldpwd>,<newpwd> +CME ERROR: <err>
+CPWD=? +CPWD: list of supported (<fac>,<pwdlength>)s
+CME ERROR: <err>
Description
Action command sets a new password for the facility lock function defined by command Facility Lock +CLCK. Refer clause 9.2 for possible <err> values.
Test command returns a list of pairs which present the available facilities and the maximum length of their password.
Defined values
<fac>:
"P2"
SIM PIN2
refer Facility Lock +CLCK for other values
<oldpwd>, <newpwd>
string type; <oldpwd> shall be the same as password specified for the facility from the MT user interface or with command Change Password +CPWD and <newpwd> is the new password; maximum length of password can be determined with <pwdlength>
<pwdlength>
integer type maximum length of the password for the facility
Implementation
Optional.
Up

7.6  Calling line identification presentation +CLIPWord‑p. 67

Command Possible response(s)
+CLIP=[<n>]
+CLIP? +CLIP: <n>,<m>
+CLIP=? +CLIP: (list of supported <n>s)
Description
This command refers to the supplementary service CLIP (Calling Line Identification Presentation) according to TS 22.081 and OIP (Originating Identification Presentation) according to TS 24.607 that enables a called subscriber to get the calling line identity (CLI) of the calling party when receiving a mobile terminated call. Set command enables or disables the presentation of the CLI at the TE. It has no effect on the execution of the supplementary service CLIP / OIP in the network.
When <n>=1, the presentation of the calling line identity at the TE is enabled and when the calling subscriber allows, the unsolicited result code +CLIP: <number>,<type>[,<subaddr>,<satype>[,[<alpha>][,<CLI_validity>]]] is returned after every RING (or +CRING: <type>; refer clause "Cellular result codes +CRC") result code sent from TA to TE. It is manufacturer specific if this response is used when normal voice call is answered. The unsolicited result code +CLIP does not support numbers of the SIP URI format.
When <n>=0, the presentation of the calling line identity at the TE with unsolicited result code +CLIP is disabled.
The calling line identity can also be reported in unsolicited result codes +CMCCSS<x> / +CMCCSSEND, enabled with +CMCCS=3 (see AT command monitor of current calls +CMCCS). The unsolicited result codes +CMCCSS<x> / +CMCCSSEND support numbers of the SIP URI format. Read command gives the status of <n>, and also triggers an interrogation of the provision status of the CLIP supplementary service according to TS 22.081 and OIP supplementary service according to TS 24.607 (given in <m>).
Read command returns the current settings.
Test command returns values supported as a compound value.
Defined values
<n>
integer type (parameter sets/shows the result code presentation status to the TE).
0 (default)
disable
1
enable
<m>
integer type (parameter shows the subscriber CLIP / OIP service status in the network).
0
CLIP / OIP not provisioned
1
CLIP / OIP provisioned
2
unknown (e.g. no network, etc.)
<number>
string type phone number of format specified by <type>.
<type>
type of address octet in integer format (refer TS 24.008, clause 10.5.4.7).
<subaddr>
string type subaddress of format specified by <satype>
<satype>
type of subaddress octet in integer format (refer TS 24.008, clause 10.5.4.8).
<alpha>
optional string type alphanumeric representation of <number> corresponding to the entry found in phonebook; used character set should be the one selected with command select TE character set +CSCS.
<CLI_validity>
integer type. This parameter can provide details why <number> does not contain a calling party BCD number (refer TS 24.008, clause 10.5.4.30).
0
CLI valid
1
CLI has been withheld by the originator (refer TS 24.008 table 10.5.135a/3GPP TS 24.008 code "Reject by user")
2
CLI is not available due to interworking problems or limitations of originating network (refer TS 24.008 table 10.5.135a/3GPP TS 24.008 code "Interaction with other service")
3
CLI is not available due to calling party being of type payphone (refer TS 24.008 table 10.5.135a/3GPP TS 24.008 code "Coin line/payphone")
4
CLI is not available due to other reasons (refer TS 24.008 table 10.5.135a/3GPP TS 24.008 code "Unavailable").
When CLI is not available (<CLI_validity>=2, <CLI_validity>=3 or <CLI_validity>=4), <number> shall be an empty string ("") and <type> value will not be significant. Nevertheless, TA may return the recommended value 128 for <type> (TON/NPI unknown in accordance with TS 24.008, clause 10.5.4.7).
When CLI has been withheld by the originator, (<CLI_validity>=1) and the CLIP is provisioned with the "override category" option (refer TS 22.081 and TS 23.081), <number> and <type> is provided. Otherwise, TA shall return the same setting for <number> and <type> as if the CLI was not available.
Implementation
Optional.
Up

7.7  Calling line identification restriction +CLIRWord‑p. 69

Command Possible response(s)
+CLIR=[<n>]
+CLIR? +CLIR: <n>,<m>
+CLIR=? +CLIR: (list of supported <n>s)
Description
This command refers to the supplementary service CLIR (Calling Line Identification Restriction) according to TS 22.081 and OIR (Originating Identification Restriction) according to TS 24.607 that allows a calling subscriber to enable or disable the presentation of the calling line identity (CLI) to the called party when originating a call.
Set command overrides the CLIR / OIR subscription (default is restricted or allowed) when temporary mode is provisioned as a default adjustment for all following outgoing calls. This adjustment can be revoked by using the opposite command. If this command is used by a subscriber without provision of CLIR / OIR in permanent mode the network will act according to TS 22.081 and TS 24.607).
Read command gives the default adjustment for all outgoing calls (given in <n>), and also triggers an interrogation of the provision status of the CLIR / OIR service (given in <m>).
Test command returns values supported as a compound value.
Defined values
<n>
integer type (parameter sets the adjustment for outgoing calls).
0 (defzult)
presentation indicator is used according to the subscription of the CLIR / OIR service.
1
CLIR / OIR invocation
2
CLIR / OIR suppression
<m>
integer type (parameter shows the subscriber CLIR / OIR service status in the network).
0
CLIR / OIR not provisioned
1
CLIR / OIR provisioned in permanent mode
2
unknown (e.g. no network, etc.)
3
CLIR / OIR temporary mode presentation restricted
4
CLIR / OIR temporary mode presentation allowed
Implementation
Optional.
Up

7.8  Connected line identification presentation +COLPWord‑p. 70

Command Possible response(s)
+COLP=[<n>]
+COLP? +COLP: <n>,<m>
+COLP=? +COLP: (list of supported <n>s)
Description
This command refers to the supplementary service COLP (Connected Line Identification Presentation) according to TS 22.081 and TIP (Terminating Identification Presentation) according to TS 24.608 that enables a calling subscriber to get the connected line identity (COL) of the called party after setting up a mobile originated call. The command enables or disables the presentation of the COL at the TE. It has no effect on the execution of the supplementary service COLR / TIR in the network.
When <n>=1, the presentation of the connected line identity at the TE enabled and when the called subscriber allows the intermediate result code, +COLP: <number>,<type>[,<subaddr>,<satype> [,<alpha>]] is returned from TA to TE before any +CR or ITU-T Recommendation V.250 [14] responses. It is manufacturer specific if this response is used when normal voice call is established. The intermediate result code +COLP does not support numbers of the SIP URI format.
When <n>=0, the presentation of the connected line identity at the TE is disabled.
The connected line identity can also be reported in unsolicited result codes +CMCCSS<x> / +CMCCSSEND, enabled with +CMCCS=3 (see AT command monitor of current calls +CMCCS). The unsolicited result codes +CMCCSS<x> / +CMCCSSEND support numbers of the SIP URI format.
Read command gives the status of <n>, and also triggers an interrogation of the provision status of the COLP supplementary service according TS 22.081 and TIP supplementary service according to TS 24.608 (given in <m>).
Test command returns values supported as a compound value.
Defined values
<n>
integer type (parameter sets/shows the result code presentation status to the TE).
0 (default)
disable
1
enable
<m>
integer type (parameter shows the subscriber COLP service status in the network).
0
COLP / TIP not provisioned
1
COLP / TIP provisioned
2
unknown (e.g. no network, etc.)
<number>, <type>, <subaddr>, <satype>, <alpha>
refer +CLIP.
Implementation
Optional.
Up

7.9  Called line identification presentation +CDIPWord‑p. 71

Command Possible response(s)
+CDIP=[<n>]
+CDIP? +CDIP: <n>,<m>
+CDIP=? +CDIP: (list of supported <n>s)
Description
This command related to a network service that provides "multiple called numbers (called line identifications) service" to an MT. This command enables a called subscriber to get the called line identification of the called party when receiving a mobile terminated call. Set command enables or disables the presentation of the called line identifications at the TE.
When <n>=1, the presentation of the called line identification at the TE is enabled, the unsolicited result code +CDIP: <number>,<type>[,<subaddr>,<satype>] is returned after every RING (or +CRING: <type>; refer clause "Cellular result codes +CRC") result code sent from TA to TE. It is manufacturer specific if this response is used when normal voice call is answered. The unsolicited result code +CDIP does not support numbers of the SIP URI format.
When <n>=0, the presentation of the called line identification at the TE is disabled.
The called line identification can also be reported in unsolicited result codes +CMCCSS<x> / +CMCCSSEND, enabled with +CMCCS=3 (see AT command monitor of current calls +CMCCS). The unsolicited result codes +CMCCSS<x> / +CMCCSSEND support numbers of the SIP URI format.
Read command gives the status of <n>, and also triggers an interrogation of the provision status of the "multiple called numbers" service.
Test command returns values supported as a compound value.
Defined values
<n>
integer type (parameter sets/shows the result code presentation status to the TE)
0 (default)
disable
1
enable
<m>
integer type (parameter shows the subscriber "multiple called numbers" service status in the network)
0
"multiple called numbers service" is not provisioned
1
"multiple called numbers service" is provisioned
2
unknown (e.g. no network, etc.)
<number>
string type phone number of format specified by <type>
<type>
type of address octet in integer format (refer TS 24.008, clause 10.5.4.7)
<subaddr>
string type subaddress of format specified by <satype>
<satype>
type of subaddress octet in integer format (refer TS 24.008, clause 10.5.4.8)
Implementation
Optional.
Up

Up   Top   ToC