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>
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>
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.
automatic (<oper> field is ignored)
manual (<oper> field shall be present, and <AcT> optionally)
deregister from network
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
manual/automatic (<oper> field shall be present); if manual selection fails, automatic mode (<mode>=0) is entered
long format alphanumeric <oper>
short format alphanumeric <oper>
register not for disaster roaming service.
register for disaster roaming service.
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 ); 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  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)
forbidden and supports disaster roaming
integer type; access technology selected
GSM w/EGPRS (see NOTE 1)
UTRAN w/HSDPA (see NOTE 2)
UTRAN w/HSUPA (see NOTE 2)
UTRAN w/HSDPA and HSUPA (see NOTE 2)
EC-GSM-IoT (A/Gb mode) (see NOTE 3)
E-UTRAN (NB-S1 mode) (see NOTE 4)
E-UTRA connected to a 5GCN (see NOTE 5)
NR connected to a 5GCN (see NOTE 5)
E-UTRA-NR dual connectivity (see NOTE 6)