org.freedesktop.ModemManager1.Modem: ModemManager Reference Manual

## org.freedesktop.ModemManager1.Modem org.freedesktop.ModemManager1.Modem — The ModemManager Modem interface. |

## Methods

    Enable                 (IN  b      enable);
    ListBearers            (OUT ao     bearers);
    CreateBearer           (IN  a{sv}  properties,
                            OUT o      path);
    DeleteBearer           (IN  o      bearer);
    Reset                  ();
    FactoryReset           (IN  s      code);
    SetPowerState          (IN  u      state);
    SetCurrentCapabilities (IN  u      capabilities);
    SetCurrentModes        (IN  (uu)   modes);
    SetCurrentBands        (IN  au     bands);
    SetPrimarySimSlot      (IN  u      sim_slot);
    GetCellInfo            (OUT aa{sv} cell_info);
    Command                (IN  s      cmd,
                            IN  u      timeout,
                            OUT s      response);

## Signals

    StateChanged (i old,
                  i new,
                  u reason);

## Properties

    Sim                           readable   o
    SimSlots                      readable   ao
    PrimarySimSlot                readable   u
    Bearers                       readable   ao
    SupportedCapabilities         readable   au
    CurrentCapabilities           readable   u
    MaxBearers                    readable   u
    MaxActiveBearers              readable   u
    MaxActiveMultiplexedBearers   readable   u
    Manufacturer                  readable   s
    Model                         readable   s
    Revision                      readable   s
    CarrierConfiguration          readable   s
    CarrierConfigurationRevision  readable   s
    HardwareRevision              readable   s
    DeviceIdentifier              readable   s
    Device                        readable   s
    Physdev                       readable   s
    Drivers                       readable   as
    Plugin                        readable   s
    PrimaryPort                   readable   s
    Ports                         readable   a(su)
    EquipmentIdentifier           readable   s
    UnlockRequired                readable   u
    UnlockRetries                 readable   a{uu}
    State                         readable   i
    StateFailedReason             readable   u
    AccessTechnologies            readable   u
    SignalQuality                 readable   (ub)
    OwnNumbers                    readable   as
    PowerState                    readable   u
    SupportedModes                readable   a(uu)
    CurrentModes                  readable   (uu)
    SupportedBands                readable   au
    CurrentBands                  readable   au
    SupportedIpFamilies           readable   u

## Description

The Modem interface controls the status and actions in a given modem object.

This interface will always be available as long a the modem is considered valid.

## Method Details

### The `Enable()` method

    Enable (IN  b enable);

Enable or disable the modem.

When enabled, the modem's radio is powered on and data sessions, voice calls, location services, and Short Message Service may be available.

When disabled, the modem enters low-power state and no network-related operations are available.

Since: 1.0

`IN b `enable``: | `TRUE` to enable the modem and `FALSE` to disable it.

### The `ListBearers()` method

    ListBearers (OUT ao bearers);

List configured packet data bearers (EPS Bearers, PDP Contexts, or CDMA2000 Packet Data Sessions).

Since: 1.0

Deprecated: 1.10.0. Use "Bearers" property instead.

`OUT ao `bearers``: | The list of bearer object paths.

### The `CreateBearer()` method

    CreateBearer (IN  a{sv} properties,
                  OUT o     path);

Create a new packet data bearer using the given characteristics.

This request may fail if the modem does not support additional bearers, if too many bearers are already defined, or if properties are invalid.

The properties allowed are any of the ones defined in the bearer properties.

Since: 1.0

`IN a{sv} `properties``: | Dictionary of properties needed to get the bearer connected.
`OUT o `path``: | On success, the object path of the newly created bearer.

### The `DeleteBearer()` method

    DeleteBearer (IN  o bearer);

Delete an existing packet data bearer.

If the bearer is currently active and providing packet data server, it will be disconnected and that packet data service will terminate.

Since: 1.0

`IN o `bearer``: | Object path of the bearer to delete.

### The `Reset()` method

    Reset ();

Clear non-persistent configuration and state, and return the device to a newly-powered-on state.

This command may power-cycle the device.

Since: 1.0

### The `FactoryReset()` method

    FactoryReset (IN  s code);

Clear the modem's configuration (including persistent configuration and state), and return the device to a factory-default state.

If not required by the modem, `code` may be ignored.

This command may or may not power-cycle the device.

Since: 1.0

`IN s `code``: | Carrier-supplied code required to reset the modem.

### The `SetPowerState()` method

    SetPowerState (IN  u state);

Set the power state of the modem. This action can only be run when the modem is in `MM_MODEM_STATE_DISABLED` state.

Since: 1.0

`IN u `state``: | A MMModemPowerState value, to specify the desired power state.

### The `SetCurrentCapabilities()` method

    SetCurrentCapabilities (IN  u capabilities);

Set the capabilities of the device.

The given bitmask should be supported by the modem, as specified in the "SupportedCapabilities" property.

This command may power-cycle the device.

Since: 1.0

`IN u `capabilities``: | Bitmask of MMModemCapability values, to specify the capabilities to use.

### The `SetCurrentModes()` method

    SetCurrentModes (IN  (uu) modes);

Set the access technologies (e.g. 2G/3G/4G preference) the device is currently allowed to use when connecting to a network.

The given combination should be supported by the modem, as specified in the "SupportedModes" property.

Since: 1.0

`IN (uu) `modes``: | A pair of MMModemMode values, where the first one is a bitmask of allowed modes, and the second one the preferred mode, if any.

### The `SetCurrentBands()` method

    SetCurrentBands (IN  au bands);

Set the radio frequency and technology bands the device is currently allowed to use when connecting to a network.

Since: 1.0

`IN au `bands``: | List of MMModemBand values, to specify the bands to be used.

### The `SetPrimarySimSlot()` method

    SetPrimarySimSlot (IN  u sim_slot);

Selects which SIM slot to be considered as primary, on devices that expose multiple slots in the "SimSlots" property.

When the switch happens the modem may require a full device reprobe, so the modem object in DBus will get removed, and recreated once the selected SIM slot is in use.

There is no limitation on which SIM slot to select, so the user may also set as primary a slot that doesn't currently have any valid SIM card inserted.

Since: 1.16

`IN u `sim_slot``: | SIM slot number to set as primary.

### The `GetCellInfo()` method

    GetCellInfo (OUT aa{sv} cell_info);

Get information for available cells in different access technologies, either serving or neighboring along with radio frequency information.

An array of dictionaries is returned, where each dictionary reports information for one single cell.

The dictionaries have mandatory keys that are always given, including:

`"cell-type"` | The MMCellType, given as an unsigned integer value (signature `"u"`).
`"serving"` | Flag specifying whether the cell is a serving cell or otherwise a neighboring cell, given as a boolean value (signature `"b"`).

For each different cell type, other optional keys may be given.

MM_CELL_TYPE_CDMA | The CDMA cell information may include the following additional keys:
`"nid"` | Network id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"12345"`.
`"sid"` | System id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"ABCD"`.
`"base-station-id"` | Base station id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"3F"`.
`"ref-pn"` | Base station PN number, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"3F"`.
`"pilot-strength"` | The signal strength of the pilot, given in the same format and scale as the GSM SINR level, given as an unsigned integer value (signature `"u"`).
MM_CELL_TYPE_GSM | The GSM cell information may include the following additional keys:
`"operator-id"` | PLMN MCC/MNC, given as a string value (signature `"s"`). E.g. `21034`.
`"lac"` | This is the two-byte Location Area Code of the base station, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"84CD"`.
`"ci"` | This is the two- or four-byte Cell Identifier, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"2BAF"` or `"D30156"`.
`"timing-advance"` | Measured delay (in bit periods; 1 bit period = 48/13 microsecond) of an access burst transmission on the RACH or PRACH to the expected signal from a mobile station at zero distance under static channel conditions, given as an unsigned integer value (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"arfcn"` | Absolute RF channel number, given as an unsigned integer value (signature `"u"`).
`"base-station-id"` | Base station id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"3F"`.
`"rx-level"` | Serving cell Rx measurement, given as a unsigned integer value (signature `"u"`. Values range between 0 and 63.
MM_CELL_TYPE_UMTS | The UMTS cell information may include the following additional keys:
`"operator-id"` | PLMN MCC/MNC, given as a string value (signature `"s"`). E.g. `21034`.
`"lac"` | This is the two-byte Location Area Code of the base station, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"84CD"`.
`"ci"` | This is the two- or four-byte Cell Identifier, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. e.g. `"2BAF"` or `"D30156"`.
`"frequency-fdd-ul"` | In FDD, the frequency of the uplink in kHz, given as an unsigned integer value (signature `"u"`). Values range between 0 and 16383. Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"frequency-fdd-dl"` | In FDD, the frequency of the downlink in kHz, given as an unsigned integer value (signature `"u"`). Values range between 0 and 16383. Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"frequency-tdd"` | In TDD, the frequency in kHz, given as an unsigned integer value (signature `"u"`). Values range between 0 and 16383. Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"uarfcn"` | UTRA absolute RF channel number, given as an unsigned integer value (signature `"u"`).
`"psc"` | Primary scrambling code, given as an unsigned integer value (signature `"u"`).
`"rscp"` | Received signal code power; the received power on one code measured in dBm on the primary CPICH channel of the cell, given as a signed integer value (signature `"d"`).
`"ecio"` | ECIO; the received energy per chip divided by the power density in the band measured in dBm on the primary CPICH channel of the cell, given as a signed integer value (signature `"d"`).
`"path-loss"` | The path loss of the cell, given as an unsigned integer value (signature `"u"`. Only applicable for the serving cell (i.e. "serving" must be TRUE).
MM_CELL_TYPE_TDSCDMA | The TD-SCDMA cell information may include the following additional keys:
`"operator-id"` | PLMN MCC/MNC, given as a string value (signature `"s"`). E.g. `21034`.
`"lac"` | This is the two-byte Location Area Code of the base station, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"84CD"`.
`"ci"` | This is the two- or four-byte Cell Identifier, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. e.g. `"2BAF"` or `"D30156"`.
`"uarfcn"` | UTRA absolute RF channel number, given as an unsigned integer value (signature `"u"`).
`"cell-parameter-id"` | The cell parameter ID, given as an unsigned integer value (signature `"u"`).
`"timing-advance"` | Measured delay (in bit periods; 1 bit period = 48/13 microsecond) of an access burst transmission on the RACH or PRACH to the expected signal from an MS at zero distance under static channel conditions, given as a unsigned integer value (signature `"u"`).
`"rscp"` | Received signal code power; the received power on one code measured in dBm on the primary CPICH channel of the cell, given as a signed integer value (signature `"d"`).
`"path-loss"` | The path loss of the cell, given as an unsigned integer value (signature `"u"`.
MM_CELL_TYPE_LTE | The LTE cell information may include the following additional keys:
`"operator-id"` | PLMN MCC/MNC, given as a string value (signature `"s"`). E.g. `21034`.
`"tac"` | This is the two- or three-byte Tracking Area Code of the base station, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"84CD"`.
`"ci"` | This is the two- or four-byte Cell Identifier, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. e.g. `"2BAF"` or `"D30156"`.
`"physical-ci"` | The physical cell id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"1A0"`.
`"earfcn"` | E-UTRA absolute RF channel number, given as an unsigned integer value (signature `"u"`).
`"rsrp"` | The average reference signal received power in dBm, given as a signed integer value (signature `"d"`.
`"rsrq"` | The average reference signal received quality in dB, given as a signed integer value (signature `"d"`.
`"timing-advance"` | The timing advance, given as an unsigned integer value (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"serving-cell-type"` | A MMServingCellType value indicating that the frequency information provided in this structure belongs to which servicing cell, given as an unsigned integer (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE). Since 1.22.
`"bandwidth"` | Bandwidth of the particular carrier in downlink, given as an unsigned integer (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE). Since 1.22.
MM_CELL_TYPE_5GNR | The 5GNR cell information may include the following additional keys:
`"operator-id"` | PLMN MCC/MNC, given as a string value (signature `"s"`). E.g. `21034`.
`"tac"` | This is the two- or three-byte Tracking Area Code of the base station, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. E.g. `"84CD"`.
`"ci"` | This is the two- or four-byte Cell Identifier, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros, as specified in 3GPP TS 27.007. e.g. `"2BAF"` or `"D30156"`.
`"physical-ci"` | The physical cell id, given as a string value (signature `"s"`) in upper-case hexadecimal format without leading zeros. E.g. `"1A0"`.
`"nrarfcn"` | NR absolute RF channel number, given as an unsigned integer value (signature `"u"`).
`"rsrp"` | The average reference signal received power in dBm, given as a signed integer value (signature `"d"`.
`"rsrq"` | The average reference signal received quality in dB, given as a signed integer value (signature `"d"`.
`"sinr"` | The signal to interference and noise ratio, given as a signed integer value (signature `"d"`.
`"timing-advance"` | The timing advance, given as an unsigned integer value (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE).
`"serving-cell-type"` | A MMServingCellType value indicating that the frequency information provided in this structure belongs to which servicing cell, given as an unsigned integer (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE). Since 1.22.
`"bandwidth"` | Bandwidth of the particular carrier in downlink, given as an unsigned integer (signature `"u"`). Only applicable for the serving cell (i.e. "serving" must be TRUE). Since 1.22.

Since: 1.20

`OUT aa{sv} `cell_info``: |

### The `Command()` method

    Command (IN  s cmd,
             IN  u timeout,
             OUT s response);

Send an arbitrary AT command to a modem and get the response.

Note that using this interface call is only allowed when running ModemManager in debug mode or if the project was built using the `with-at-command-via-dbus` configure option.

Since: 1.0

`IN s `cmd``: | The command string, e.g. "AT+GCAP" or "+GCAP" (leading AT is inserted if necessary).
`IN u `timeout``: | The number of seconds to wait for a response.
`OUT s `response``: | The modem's response.

## Signal Details

### The "StateChanged" signal

    StateChanged (i old,
                  i new,
                  u reason);

The modem's state (see "State") changed.

Since: 1.0

`i `old``: | A MMModemState value, specifying the new state.
`i `new``: | A MMModemState value, specifying the new state.
`u `reason``: | A MMModemStateChangeReason value, specifying the reason for this state change.

## Property Details

### The "Sim" property

    Sim  readable   o

The path of the primary active SIM object available in this device, if any.

This SIM object is the one used for network registration and data connection setup.

If multiple org.freedesktop.ModemManager1.Modem.SimSlots are supported, the org.freedesktop.ModemManager1.Modem.PrimarySimSlot index value specifies which is the slot number where this SIM card is available.

Since: 1.0

### The "SimSlots" property

    SimSlots  readable   ao

The list of SIM slots available in the system, including the SIM object paths if the cards are present. If a given SIM slot at a given index doesn't have a SIM card available, an empty object path will be given.

The length of this array of objects will be equal to the amount of available SIM slots in the system, and the index in the array is the slot index.

This list includes the SIM object considered as primary active SIM slot (org.freedesktop.ModemManager1.Modem.Sim) at index org.freedesktop.ModemManager1.Modem.ActiveSimSlot.

Since: 1.16

### The "PrimarySimSlot" property

    PrimarySimSlot  readable   u

The index of the primary active SIM slot in the org.freedesktop.ModemManager1.Modem.SimSlots array, given in the [1,N] range.

If multiple SIM slots aren't supported, this property will report value 0.

In a Multi SIM Single Standby setup, this index identifies the only SIM that is currently active. All the remaining slots will be inactive.

In a Multi SIM Multi Standby setup, this index identifies the active SIM that is considered primary, i.e. the one that will be used when a data connection is setup.

Since: 1.16

### The "Bearers" property

    Bearers  readable   ao

The list of bearer object paths (EPS Bearers, PDP Contexts, or CDMA2000 Packet Data Sessions) as requested by the user.

This list does not include the initial EPS bearer details (see "InitialEpsBearer").

Since: 1.2

### The "SupportedCapabilities" property

    SupportedCapabilities  readable   au

List of MMModemCapability bitmasks, specifying the combinations of generic family of access technologies the modem supports.

If the modem doesn't allow changing the current capabilities, the list will report one single entry with the same bitmask as in "CurrentCapabilities".

Only multimode devices implementing both 3GPP (GSM/UMTS/LTE/5GNR) and 3GPP2 (CDMA/EVDO) specs will report more than one combination of capabilities.

Since: 1.0

### The "CurrentCapabilities" property

    CurrentCapabilities  readable   u

Bitmask of MMModemCapability values, specifying the currently used generic family of access technologies.

This bitmask will be one of the ones listed in "SupportedCapabilities".

Since: 1.0

### The "MaxBearers" property

    MaxBearers  readable   u

The maximum number of defined packet data bearers the modem supports.

This is not the number of active/connected bearers the modem supports, but simply the number of bearers that may be defined at any given time. For example, POTS and CDMA2000-only devices support only one bearer, while GSM/UMTS devices typically support three or more, and any LTE-capable device (whether LTE-only, GSM/UMTS-capable, and/or CDMA2000-capable) also typically support three or more.

Deprecated: 1.18.0. There is no way to query the modem how many bearers it supports, so the value exposed in this property in all the different implementations is always equal to the value in "MaxActiveBearers", so there is no point in using this property.

Since: 1.0

### The "MaxActiveBearers" property

    MaxActiveBearers  readable   u

The maximum number of active `MM_BEARER_TYPE_DEFAULT` bearers that may be explicitly enabled by the user without multiplexing support.

POTS and CDMA2000-only devices support one active bearer, while GSM/UMTS and LTE/5GNR capable devices (including 3GPP+3GPP3 multimode devices) may support one or more active bearers, depending on the amount of physical ports exposed by the device.

Since: 1.0

### The "MaxActiveMultiplexedBearers" property

    MaxActiveMultiplexedBearers  readable   u

The maximum number of active `MM_BEARER_TYPE_DEFAULT` bearers that may be explicitly enabled by the user with multiplexing support on one single network interface.

If the modem doesn't support multiplexing of data sessiones, a value of 0 will be reported.

Since: 1.18

### The "Manufacturer" property

    Manufacturer  readable   s

The equipment manufacturer, as reported by the modem.

Since: 1.0

### The "Model" property

    Model  readable   s

The equipment model, as reported by the modem.

Since: 1.0

### The "Revision" property

    Revision  readable   s

The revision identification of the software, as reported by the modem.

Since: 1.0

### The "CarrierConfiguration" property

    CarrierConfiguration  readable   s

The description of the carrier-specific configuration (MCFG) in use by the modem.

Since: 1.12

### The "CarrierConfigurationRevision" property

    CarrierConfigurationRevision  readable   s

The revision identification of the carrier-specific configuration (MCFG) in use by the modem.

Since: 1.12

### The "HardwareRevision" property

    HardwareRevision  readable   s

The revision identification of the hardware, as reported by the modem.

Since: 1.8

### The "DeviceIdentifier" property

    DeviceIdentifier  readable   s

A best-effort device identifier based on various device information like model name, firmware revision, USB/PCI/PCMCIA IDs, and other properties.

This ID is not guaranteed to be unique and may be shared between identical devices with the same firmware, but is intended to be "unique enough" for use as a casual device identifier for various user experience operations.

This is not the device's IMEI or ESN since those may not be available before unlocking the device via a PIN.

Since: 1.0

### The "Device" property

    Device  readable   s

The physical modem device reference (ie, USB, PCI, PCMCIA device), which may be dependent upon the operating system.

In Linux for example, this points to a sysfs path of the usb_device object.

This value may also be set by the user using the MM_ID_PHYSDEV_UID udev tag (e.g. binding the tag to a specific sysfs path).

Since: 1.0

### The "Physdev" property

    Physdev  readable   s

The physical modem device path (ie, USB, PCI, PCMCIA device), which may be dependent upon the operating system.

In Linux for example, this points to a sysfs path of the usb_device object.

Since: 1.22

### The "Drivers" property

    Drivers  readable   as

The Operating System device drivers handling communication with the modem hardware.

Since: 1.0

### The "Plugin" property

    Plugin  readable   s

The name of the plugin handling this modem.

Since: 1.0

### The "PrimaryPort" property

    PrimaryPort  readable   s

The name of the primary port using to control the modem.

Since: 1.0

### The "Ports" property

    Ports  readable   a(su)

The list of ports in the modem, given as an array of string and unsigned integer pairs. The string is the port name or path, and the integer is the port type given as a MMModemPortType value.

Since: 1.0

### The "EquipmentIdentifier" property

    EquipmentIdentifier  readable   s

The identity of the device.

This will be the IMEI number for GSM devices and the hex-format ESN/MEID for CDMA devices.

Since: 1.0

### The "UnlockRequired" property

    UnlockRequired  readable   u

Current lock state of the device, given as a MMModemLock value.

Since: 1.0

### The "UnlockRetries" property

    UnlockRetries  readable   a{uu}

A dictionary in which the keys are MMModemLock flags, and the values are integers giving the number of PIN tries remaining before the code becomes blocked (requiring a PUK) or permanently blocked. Dictionary entries exist only for the codes for which the modem is able to report retry counts.

Since: 1.0

### The "State" property

    State  readable   i

Overall state of the modem, given as a MMModemState value.

If the device's state cannot be determined, `MM_MODEM_STATE_UNKNOWN` will be reported.

Since: 1.0

### The "StateFailedReason" property

    StateFailedReason  readable   u

Error specifying why the modem is in `MM_MODEM_STATE_FAILED` state, given as a MMModemStateFailedReason value.

Since: 1.0

### The "AccessTechnologies" property

    AccessTechnologies  readable   u

Bitmask of MMModemAccessTechnology values, specifying the current network access technologies used by the device to communicate with the network.

If the device's access technology cannot be determined, `MM_MODEM_ACCESS_TECHNOLOGY_UNKNOWN` will be reported.

Since: 1.0

### The "SignalQuality" property

    SignalQuality  readable   (ub)

Signal quality in percent (0 - 100) of the dominant access technology the device is using to communicate with the network. Always 0 for POTS devices.

The additional boolean value indicates if the quality value given was recently taken.

Since: 1.0

### The "OwnNumbers" property

    OwnNumbers  readable   as

List of numbers (e.g. MSISDN in 3GPP) being currently handled by this modem.

Since: 1.0

### The "PowerState" property

    PowerState  readable   u

A MMModemPowerState value specifying the current power state of the modem.

Since: 1.0

### The "SupportedModes" property

    SupportedModes  readable   a(uu)

This property exposes the supported mode combinations, given as an array of unsigned integer pairs, where:

| The first integer is a bitmask of MMModemMode values, specifying the allowed modes.
| The second integer is a single MMModemMode, which specifies the preferred access technology, among the ones defined in the allowed modes.

Since: 1.0

### The "CurrentModes" property

    CurrentModes  readable   (uu)

A pair of MMModemMode values, where the first one is a bitmask specifying the access technologies (eg 2G/3G/4G) the device is currently allowed to use when connecting to a network, and the second one is the preferred mode of those specified as allowed.

The pair must be one of those specified in "SupportedModes".

Since: 1.0

### The "SupportedBands" property

    SupportedBands  readable   au

List of MMModemBand values, specifying the radio frequency and technology bands supported by the device.

For POTS devices, only the `MM_MODEM_BAND_ANY` mode will be returned.

Since: 1.0

### The "CurrentBands" property

    CurrentBands  readable   au

List of MMModemBand values, specifying the radio frequency and technology bands the device is currently using when connecting to a network.

It must be a subset of "SupportedBands".

Since: 1.0

### The "SupportedIpFamilies" property

    SupportedIpFamilies  readable   u

Bitmask of MMBearerIpFamily values, specifying the IP families supported by the device.

Since: 1.0