> ## 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.

# TELCO - Communications

> Operation and management of telecommunications

The TELCO screen manages and broadcasts all types of telephone communications. \
Access it by pressing **TELCO** on the main screen.\
This screen shows channels defined in TELCO mode (see CHANNEL screen), which are those associated with landline phones (POTS) and Bluetooth mobile phones.

<img src="https://mintcdn.com/solidyne/dPcEHCgMrmrr7-id/images/ux24/ux24-telco.jpg?fit=max&auto=format&n=dPcEHCgMrmrr7-id&q=85&s=f3b7e09eefe824b9d4656db286f12c22" alt="UX24 Telco" title="UX24 Telco" style={{ width:"80%" }} width="1081" height="600" data-path="images/ux24/ux24-telco.jpg" />

In these instructions, the term "TELCO line" refers to both traditional lines and paired mobile phones.

<Note>
  Landlines (POTS) and mobile phones connect to UNIDEX through external adapters (Solidyne UDX 2TEL and TEL+BT).
</Note>

Calls, whether through traditional telephony or Bluetooth mobiles, are operated the same way on the console, except for some specifics (for example, when originating a call).

**Each line uses its own channel**. Any channel can be configured in TELCO mode, though physical channels are recommended. Virtual channels in TELCO mode do not support the *talk-back* function for private dialogue.

Main operations (answer, hold, put on air, hang up) can also be done using the **CUE** and **ON AIR** buttons on each channel.

### TELCO Screen

**Available Lines (2)**\
UX24 supports up to 8 TELCO lines. The screen displays them in two groups of four lines.\
If there are more than four, the **Page Down** button accesses the remaining ones. Each line indicates:

* Channel number and name.
* Status:

  **Yellow**: incoming call (*RING*).

  **Green**: line on hold (*HOLD*).

  **Red**: line on air.
* Time on air or on hold.

**Selected Line (1)**\
Shows name and channel of currently selected line. On-screen controls always correspond to this line.\
To select a line, touch it in the list. It doesn't matter if it's on air, on hold or inactive.

**Level Indicator (3)**\
Shows received audio level. Also indicates the UNIDEX input name where the UDX adapter was connected.

**Input Gain**\
Controls input gain associated with the UDX adapter. Adjusted using the encoder.

**Send Level**\
Adjusts output gain associated with the UDX adapter for line send.

**DIAL**\
Opens a DTMF keypad for dialing (landlines only).

**HOLD / HANG UP**

* With incoming call: takes the line and puts it on hold (HOLD).
* With call on air: ends communication (HANG UP).

**CONFIG**\
Shows adapter type and options:

* **NULL ADJUST**: rejection adjustment (only for landlines with UDX 2TEL, 2TEL-P and TEL+BT adapters).
* **BLUETOOTH PAIRING**: activates pairing mode to link a mobile (Bluetooth channels only).

> **Note:** See UNIDEX external adapters section for connection details.

***

## Mobile Phone Operation

### Pairing a Mobile via Bluetooth

When pairing a mobile phone to the console through a Bluetooth adapter, a wireless link is established that allows broadcasting any call made from the mobile, whether through telephone network or applications.

<Warning>
  While the mobile can be up to 5 meters away from the UDX Bluetooth adapter, keeping it nearby is recommended to avoid communication interference that may generate audio artifacts (robotic effect).
</Warning>