Using the GPIs / GPOs to Trigger Actions

After enabling E & M signaling on the E1 / T1 E-QUE cards, you can use the GPIs / GPOs associated with the configured ports to trigger actions.

For example, in the earlier example: Ship-to-shore satellite system:

  1. The E & M signal from the shore-based communications system is forwarded by the matrix to the FOR-22 interface module. The FOR-22 module then generates relay closure for radio PTT (Push-to-Transmit).

  2. An E & M signal is returned to the matrix to indicate that audio from the radio is being received.

To send E & M signals from the matrix to a ship’s radio, and to receive E & M signals in the matrix from the activated radio:

  1. In EHX, select the appropriate matrix. Go to Configuration > Routes.

  2. In Configuration > Routes, add two new routes:

    1. Create a route from the first configured port on the E & M enabled E1 / T1 direct

      E-QUE card to the first available port on the FOR-22 interface module.

      Label the route (for the purposes of this example) Radio Out.

    2. Create a route from the first available port on the FOR-22 interface module to the first configured port on the E & M enabled E1 / T1 direct E-QUE card.

      Label the route (for the purposes of this example) Radio In.

  3. In Configuration > Controls, add two new controls:

    1. Label the first control PTT1.

    2. Add the Radio Out route to PTT1.

    3. Add the FOR-22 interface module relay / GPO (a relay associated with the FOR-22 port in the Radio Out route) to PTT1.

Note: This relay is used to trigger PTT at the ship’s radio.

    1. Label the second control REC1.

    1. Add the Radio In route to REC1.

    1. Add the E & M relay / GPO (the relay associated with the first configured port on the E1 / T1 direct E-QUE card) to REC1.

Note: This relay receives the E & M signal from the ship’s radio into the matrix.

  1. In Configuration > Cards and Ports > Matrix and Module GPIs:

    1. Select the appropriate E & M enabled GPI (the GPI associated with the first configured port on the E1 / T1 direct E-QUE card).

    2. In Advanced Settings, enable / select the trigger for the PTT1 control.

Note: When the E & M signal is received from the shore-based communications system at the E1 / T1 direct E-QUE card, the E & M signal is sent to the FOR-22 / radio.

  1. In Configuration > System Ports:

    1. Select the port for the FOR-22 interface module.

    2. In Advanced Settings > VOX action, select the REC1 control from the drop-down menu.

    3. In Advanced Settings > VOX action > Voice Op. Switch, adjust the Audio Off Delay and Audio Detect Threshold as required.

Note: When VOX is detected, the E & M signal for the FOR-22 / radio is sent via the E1 / T1 direct E-QUE card to the shore-based communications system.