devices that contain different types of subunits which work together well and are easy to install and operate. This platform supports modern complex base station sites and easy fault finding in the field. Improved specification Differing AISG v2 implementations from different vendors have shown the need for more detailed specification. ASIG v3.0 includes: Definitions for the primary requirements Extensive precise pseudocode to ensure uniform implementation by different vendors Much improved document structure Multi-primary support Support for ALDs that can be controlled by more than one primary. Devices supporting this feature are called Multi-primary ALDs. This feature includes the capability to configure the access rights of each of the connected primaries to each of the subunits contained within the ALD. To help sharing equipment between operators the multi primary support also includes the ability to configure which primaries can do this configuration and which can update the software of the MALD. Site mapping Site Mapping provides a set of commands that allows the primary to discover the relationships between ALDs present on the AISG bus, their capabilities and their internal connections. It enables the primary to discover details such as: Which RET controls each logical array within an antenna Frequency ranges supported by logical arrays within an antenna RF port connections to logical arrays within an antenna Relationships between sensors and logical arrays within an antenna Relationships between base station RF ports and connected logical arrays within an antenna Relationships between RF paths and controlled subunits, such as RETs and TMAs Ping An optional feature called Ping enables the automatic discovery of RF cable connections between ALDs and base station radios. It also enables the operators to identify RF cables that are incorrectly connected or missing. Enhanced interoperability testing Experience of AISG v2 shows that interoperability testing (IOT) needed to be improved. AISG v3.0 standards contain commands and hardware testing definitions to facilitate IOT to improve the quality of testing. These features ensure the devices adhere to the AISG v3.0 standards. Existing functions from AISG v2 AISG v3.0 also includes features that existed already in AISG v2.0, i.e. control of antenna tilt actuators (RETs) and control and monitoring of tower mounted amplifiers (TMAs). The extension standards that exist for AISG v2.0 will be implemented to AISG v3.0 as subunit type standards gradually. Such subunit type standards will include RAE (), GLS (Geographic Location Sensor) and ASD (Alignment Sensor Device). AISG protocol