> 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-iua-links.md).

# Creating IUA Links

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

After you create an [IUA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/iua/README.md) cluster, you must create IUA links for your system.

To create an IUA link:

1- Click **IUA** in the navigation panel

![Create Iua Config 0](https://docs.telcobridges.com/w/images/c/cb/Create_Iua_Config_0.png)

2- Select an IUA SAP

![Select IUA SAP 0](https://docs.telcobridges.com/w/images/f/ff/Select_IUA_SAP_0.png)

3- Select an IUA Cluster

![Select IUA cluster 0](https://docs.telcobridges.com/w/images/4/4d/Select_IUA_cluster_0.png)

4- Click **Create New Iua Link** in the IUA cluster configuration window:

![Create Iua link 0](https://docs.telcobridges.com/w/images/6/69/Create_Iua_link_0.png)

5- Configure the new IUA link:

* Enter a **name** for the link
* Enter an appropriate **interface ID** (must be unique to each link)
* Select a **line service**
* Select a **variant**
* Select a **side**
* Click **Create**

![Create Iua link 1](https://docs.telcobridges.com/w/images/b/b6/Create_Iua_link_1.png)

6- Verify that the **"Iua Link was successfully created"** message appears

![Create Iua link 2](https://docs.telcobridges.com/w/images/a/a1/Create_Iua_link_2.png)

**Path**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/iua_stacks/@[iua_stack]/iua_saps/@[iua_sap]/iua_clusters/@[iua_cluster]/iua_links/@[iua_link]
```

**Parameters (text)**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]/iua_stacks/@[iua_stack]/iua_saps/@[iua_sap]/iua_clusters/@[iua_cluster]/iua_links/@[iua_link]
intf_id      = "2"
intf_id_type = "Integer"
name         = "@[iua_link]"

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/iua_stacks/@[iua_stack]/iua_saps/@[iua_sap]/iua_clusters/@[iua_cluster]/iua_links/@[iua_link]
isdn_variant        = "NET5"
line_service        = "E1_LS_4"
side                = "User"

/configurations/Allyn_Config2/hardware_units/TB014369/iua_stacks/Iua0/iua_saps/IuaSap/iua_clusters/IuaCluster/iua_links/IuaLink0/parameters/advanced_parameters
flow_ctrl_end_msu_threshold   = 32
flow_ctrl_start_msu_threshold = 64
keep_layer1_up                = false
max_frame_length              = 260
max_outstanding_frames        = 8
max_retransmission            = 3

/configurations/Allyn_Config2/hardware_units/TB014369/iua_stacks/Iua0/iua_saps/IuaSap/iua_clusters/IuaCluster/iua_links/IuaLink0/parameters/timers
congestion_timer = "3 seconds"
connection_timer = "1 second"
t200_timer       = "1 second"
t203_timer       = "10 seconds"
```

**Parameters (json)**

```
{
  "intf_id" : "2",
  "intf_id_type" : "Integer",
  "name" : "@[iua_link]",
  "parameters" : {
    "advanced_parameters" : {
      "flow_ctrl_end_msu_threshold" : 32,
      "flow_ctrl_start_msu_threshold" : 64,
      "keep_layer1_up" : false,
      "max_frame_length" : 260,
      "max_outstanding_frames" : 8,
      "max_retransmission" : 3
    },
    "isdn_variant" : "NET5",
    "line_service" : "E1_LS_4",
    "side" : "User",
    "timers" : {
      "congestion_timer" : "3 seconds",
      "connection_timer" : "1 second",
      "t200_timer" : "1 second",
      "t203_timer" : "10 seconds"
    }
  }
}
```

### List of Parameters

* [Name](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/name/README.md)
* [Interface ID](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/interface-id/README.md)
* [Variant](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/isdn-variant/README.md)
* [Side](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/side/README.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://prosbcdocs.telcobridges.com/tmedia-documentation/configuration/creating-iua-links.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.