Autonomous mode fixed station interface for legacy base station equipment

A method for communication according to a plurality of modes comprising:

• transforming a received message according to a conversion mode, comprising:
• mapping data that forms the received message that is compliant with V.24 High-Level Data Link Control protocol format into a transformed message compliant with VoIP-based TIA-102.BAHA and Draft TIA-102.BAHA-A Project 25 format, wherein mapping includes discarding a portion from a key-up command received prior to a header data unit and separated from the header data unit by at least a message bytes number indicator and a check indicator in a data stream that forms the received message;
• and
• transmitting the transformed message to external equipment;
• and
• supporting connections between systems according to an autonomous mode comprising:
• establishing a connection to at least one base station or fixed station interface (FSI) automatically without involvement of a dispatch console, wherein the connection is configured to carry control messages, voice messages, and data messages.

A fixed station interface (FSI) configured to interface with a base station, comprising:

• a physical first interface configured to permit communication with a base station that is able to communicate via a proprietary protocol based on High-Level Data Link Control protocol V.24 messages;
• a physical second interface that is internet protocol compliant;
• circuitry configured to communicate with the physical first interface and the physical second interface, the circuitry being configured to:
• transform, according to a conversion mode, a V.24 message received via the physical first interface, comprising discarding portions from a key-up command, the key-up command received prior to a header data unit and separated from the header data unit by at least a message bytes number indicator and a check indicator of a data stream that forms the V.24 message, to generate a translated message compliant with VoIP-based TIA-102.BAHA and Draft TIA-102.BAHA-A Project 25 format;
• and
• support connections between systems according to an autonomous mode, comprising establishing, by the circuitry, a connection from the physical second interface to at least one base station or other FSI automatically without involvement of a dispatch console.