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The Antenna Interface Standards Group (AISG) creates and maintains standards for the control and monitoring interface between a base station and a variety of tower-top equipment. These include antennas with remote electrical tilt (RET), tower mounted amplifiers and a variety of sensors that are used to monitor the operation of tower-top equipment. These are referred to as subunits. A complete list of those currently supported can be found here.
The standards include alternative PHY layers, an RS-485 bus and an OOK system using an MF radio-frequency signal transmitted within the coaxial cables joining antennas, amplifiers and base stations.
The latest version of the standards (v3.0) provides for devices with multiple control ports that may each be connected to different controllers (usually base stations), as well as the ability for the controller to map the RF system interconnections between devices connected to the bus. The standard comprises the base standard together with standards for each subunit type.
Membership of AISG is open to the manufacturers and users of equipment that implements AISG standards.
On June 27, 2024, new versions of the Base, ADB, ALS, RET and TMA standards were released. On October 14, 2024, a new version of Base, with a change in section 9.1.8 was released. For details, please refer to the standards page.
AISG has started to develop a new standard for antenna sensors with the following capabilities:
This will be a part of the AISG v3.0 standard family.
AISG welcomes any member who would like to
participate in the development of this standard. Please email:
The AISGv3.0 standard were released on November 5, 2018. The current versions can be found on the standards page.
This site was updated on 14 February 2019, when details of the March meeting in Munich were added. (Log in and go to Members/Next Meetings). To continue to use the website, please register as a user. You can select your own username and password, but please make sure that you use the same email address as before. Once you have registered, we will enable your account if you were an existing AISG web site user. If not, we will contact you to sort out the details. The standards are available for download under the Publications menu.
If you are not receiving notices of meetings or invoices for
your annual membership dues, or have no password to the
Member's website, please email:
The Group has a continuing responsibility to maintain and update our standards. We welcome application from network operators and companies manufacturing equipment embodying the standard.
We also have an Ancillary Equipment sup-group that manufacturers of cables, connectors and other associated products are welcome to join.
Register for a user account representing a new member account and then complete the application process.
The main work items are now AISG v3.0.
The AISG standard uses a Vendor Code as a part of a unique identity for all antenna line products. If your company manufactures antenna line products please contact the secretariat for information about recieving your unique Vendor ID and joining AISG. You can view a list of all vendor codes here.
This is a list of currently specified AISG v2 device types.
Security researchers that have helped us secure the AISG web site. Click here to see the list