> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/creating-a-line-service.md).

# Creating a Line Service

> **Applies to:** Tmedia 3.0, 3.2, 3.3

A line service defines the type of paylaod that a line interface carries or it defines another line service. The configuration of a line service ends when it reaches the E1/J1/T1 line service.

The E1/T1 line services are also known as trunks or spans.

To create line service(s):

1- Select **TDM Line Interfaces** from the navigation panel

![CreateLineService 0](https://docs.telcobridges.com/w/images/d/dc/CreateLineService_0.png)

2- Select the line interface for which you would like to create a line service.

![CreateLineService 1](https://docs.telcobridges.com/w/images/1/12/CreateLineService_1.png)

3- You can create one line service at a time or multiple line services in a single pass.

3a- To create a single line service, click **Create New Child Line Service**.

![CreateLineService 1a](https://docs.telcobridges.com/w/images/3/34/CreateLineService_1a.png)

3b- To create a range of line services in a single pass, click **Create Multiple Child Line Services**.

![CreateMultipleLineService 0 A](https://docs.telcobridges.com/w/images/c/c0/CreateMultipleLineService_0_A.png)

4- Enter values for the line service.

4a- Single line service:

* Enter a **name** for the new line service
* Select an available **local index**.
* Select a **framing** mode.
* Click **Create**.

![CreateLineService 2](https://docs.telcobridges.com/w/images/3/35/CreateLineService_2.png)

4b- Multiple Line Services

* Enter a **name** for the range of line services.
* Select a renge of line interfaces for which the line services will be created. (Use the CTRL key to select individual line intefraces or the shift key to select a range.)
* Enter the number of line services you will create for the line interface. Enter 1 for T1/E1.
* Enter the starting index in **first index to create**.
* Select a **framing** mode.
* Click **Create**.

![CreateMultipleLineService 1 A](https://docs.telcobridges.com/w/images/d/dd/CreateMultipleLineService_1_A.png)

5- The new line service(s) are displayed in the **Line Services** list

![CreateLineService 3](https://docs.telcobridges.com/w/images/8/8f/CreateLineService_3.png)

**Path**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/tdm_line_interfaces/@[line_interface_name]/line_services/@[line_service_name]
```

**Parameters (text)**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/tdm_line_interfaces/@[line_interface_name]/line_services/@[line_service_name]
local_index = 0
name        = @[line_service_name]

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/tdm_line_interfaces/@[line_interface_name]/line_services/@[line_service_name]/parameters
audio_companding = "AUTO"
framing          = "AUTO"
idle_code        = 85
loop_time        = false

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/tdm_line_interfaces/@[line_interface_name]/line_services/@[line_service_name]/state
loopback_type = "None"
```

**Parameters (json)**

```
{
  "@[line service name]" : {
    "local_index" : 0,
    "name" : "@[line service name]",
    "parameters" : {
      "audio_companding" : "AUTO",
      "framing" : "AUTO",
      "idle_code" : 85,
      "loop_time" : false
    },
    "state" : {
      "loopback_type" : "None"
    }
  }
}
```

### List of Parameters

* [Name](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/name/README.md)
* [Type](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/type/README.md)
* [Local Index](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/local-index/README.md)
* [Length](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/length/README.md)
* [Encoding](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/encoding/README.md)

**Advanced Parameters**

* [Loop time](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/loop-time/README.md)
* [Idle code](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/idle-code/README.md)
* [Audio Companding](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/audio-companding/README.md)


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