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    Conventional Base Station Link

    P25 DFSI
    Integration

    Bridge your conventional P25 base stations and repeaters directly into the Sentinel Push-to-Talk network. The Digital Fixed Station Interface (DFSI) provides a standard IP connection without analog audio conversion.

    P25 DFSI Integration Hardware

    DFSI Integration Capabilities

    Maintain the digital integrity of your conventional P25 channels while extending them to global LTE/5G devices.

    Pure Digital Audio

    Eliminates the quality loss of analog conversion. IMBE/AMBE vocoder data is passed directly between the base station and the PTT network.

    PTT ID Passthrough

    Preserve conventional P25 Unit IDs across the network so dispatchers always know exactly who is transmitting.

    Direct IP Connectivity

    Connect directly to your DFSI-compliant repeaters over standard IP networks without needing hardware donor radios.