# &adminguide;

## Overview

The proto_udp module is a built-in transport module which exports the required logic in order to handle UDP-based communication. (socket initialization and send/recv primitives to be used by higher-level network layers)

Once loaded, you will be able to define "udp:" listeners in your script.

## Dependencies

### &osips; Modules

The following modules must be loaded before this module:

- None.

### External Libraries or Applications

The following libraries or applications must be installed before running &osips; with this module loaded:

- None.

## Exported Parameters

### `udp_port` (integer)

The default port to be used by all UDP listeners.

Default value is 5060.

#### Set `udp_port` parameter

    ...
    modparam("proto_udp", "udp_port", 5070)
    ...