| Function | Description |
| lineGetCallBarringCaps | Retrieves the barring modes supported by the radio hardware and network. |
| lineGetCallBarringState | Retrieves the current barring state for a given mode. Not implemented for Code-Division Multiple Access (CDMA). |
| lineGetCallWaitingCaps | Retrieves the set of media modes for which call waiting is supported by the radio hardware and network. |
| lineGetCallWaitingState | Retrieves the list of media modes for which call waiting is enabled. Not implemented for CDMA. |
| lineGetCurrentAddressID | Retrieves the current line address ID. Not implemented for CDMA. |
| lineGetCurrentHSCSDStatus | Retrieves the current non-transparent High Speed Circuit Switched Data (HSCSD) configuration. Not implemented for CDMA. |
| lineGetCurrentOperator | Retrieves the network operator on which the device is currently registered. Not implemented for CDMA. |
| lineGetCurrentSystemType | Retrieves the current line system type. |
| lineGetEquipmentState | Retrieves the state of the radio transmitter and receiver. |
| lineGetGeneralInfo | Retrieves general device information about the radio hardware, the radio software, the serial number, subscriber identity, and others. Some fields do not apply to CDMA. |
| lineGetGPRSClass | Retrieves the General Packet Radio Service (GPRS) class of the mobile device and network. Not implemented for CDMA. |
| lineGetHSCSDCaps | Retrieves the HSCSD device capabilities. Not implemented for CDMA. |
| lineGetHSCSDState | Retrieves the non-transparent HSCSD configuration to be applied during the next data call. Not implemented for CDMA. |
| lineGetMuteState | Retrieves the mute state of the device. |
| lineGetNumberCalls | Retrieves all three call counts for the given line. |
| lineGetOperatorStatus | Retrieves the lists of preferred and available operators. Not implemented for CDMA. |
| lineGetRadioPresence | Determines whether a radio module is present or not. |
| lineGetRegisterStatus | Retrieves the network registration status of the device. |
| lineGetSendCallerIDState | Indicates if Caller ID info is sent on a mobile-device-originated call. Not implemented for CDMA. |
| lineGetUSSD | Reads an Unstructured Supplementary Service Data (USSD) message. Not implemented for CDMA. |
| lineRegister | Registers the device with a particular network operator. Not implemented for CDMA. |
| lineSendUSSD | Sends a USSD message. Not implemented for CDMA. |
| lineSetCallBarringPassword | Changes the call-barring password. Not implemented for CDMA. |
| lineSetCallBarringState | Sets call barring of media modes for a given call-barring mode. Not implemented for CDMA. |
| lineSetCallWaitingState | Sets call waiting for a given set of media modes. Not implemented for CDMA. |
| lineSetCurrentAddressID | Sets the current line address ID. Not implemented for CDMA. |
| lineSetEquipmentState | Sets the state of the radio transmitter and receiver. |
| lineSetGPRSClass | Sets the GPRS class of the mobile device and the network. Not implemented for CDMA. |
| lineSetHSCSDState | Sets the non-transparent HSCSD configuration prior to a data call. Not implemented for CDMA. |
| lineSetMuteState | Sets the mute state. |
| lineSetPreferredOperator | Sets or deletes preferred operators. Not implemented for CDMA. |
| lineSetSendCallerIDState | Sets whether or not Caller ID is sent on a mobile-device-originated call. Not implemented for CDMA. |
| lineUnregister | Deregisters the device from the current network operator. |