> ## Documentation Index
> Fetch the complete documentation index at: https://docs.solidyne.ar/llms.txt
> Use this file to discover all available pages before exploring further.

# Landline operation

> Using the landline (POTS)

### Receiving a call

<Steps>
  <Step title="Call detection">
    When a call comes in, the **HOLD** button flashes with the ring cadence, regardless of the **PHONE/LINE IN** button position.
  </Step>

  <Step title="Check CUE mode">
    Ensure the **PGM/CUE** button is in **CUE** position (released) before taking the line.

    <Danger>
      If it's in **PGM** when answering, the call will go directly **on air** at the level set by the **LEVEL** knob.
    </Danger>
  </Step>

  <Step title="Select PHONE mode">
    Set the **PHONE/LINE IN** button to **PHONE** position (released).\
    This allows you to hear the line audio and send return feed.
  </Step>

  <Step title="Answer the call">
    Press **HOLD**.\
    The caller will hear the program signal (**PGM**) as return feed.
  </Step>

  <Step title="Adjust headphone level">
    Adjust using the line's **LEVEL** knob.\
    The master **CUE MONITOR** control also affects this level.
  </Step>

  <Step title="Talk off-air">
    Press the **TALK** button.\
    While pressed, the caller stops hearing the return feed and receives the operator's voice.\
    When released, the line remains on hold with PGM return.
  </Step>

  <Step title="Listen to line only">
    The **PGM** button in the **CUE MONITOR** section allows removing program audio in headphones to hear only the telephone line.
  </Step>

  <Step title="Put the call on air">
    Press **PGM/CUE** to switch to **PGM** and adjust the level with the rotary knob.\
    The person on the line can dialogue with the four microphone users on the console.
  </Step>

  <Step title="Put call back on hold">
    To take the line off air and put it on hold:

    * Turn the **LEVEL** knob to zero.
    * Press **CUE/PGM** to return to **CUE**.\
      The line remains on hold listening to the program signal.
  </Step>

  <Step title="End the call">
    Press **HOLD** to disconnect and release the line.
  </Step>
</Steps>

***

### Making a call from the console

<Steps>
  <Step title="Check CUE mode">
    Ensure the **PGM/CUE** button is in **CUE** position (released).
  </Step>

  <Step title="Take the line">
    Press **HOLD**.\
    You will hear the dial tone in headphones.\
    Volume is adjusted with the line's **LEVEL** knob and the master **CUE MONITOR** control.
  </Step>

  <Step title="Dial the number">
    Dial from the console keypad.

    * If you need to hang up and redial, release **HOLD** and press it again to retake the line.
  </Step>

  <Step title="Establish communication">
    Once the call is connected, continue from step 6 of the previous procedure (Talk off-air).
  </Step>
</Steps>