# Asterisk Project : Asterisk 13 Configuration_udptl

Created and last modified by wikibot on Aug 11, 2014

This configuration documentation is for functionality provided by `udptl`.

## udptl.conf

### global

Global options for configuring UDPTL

#### Configuration Option Reference

Option Name | Type | Default Value | Regular Expression | Description
--- | --- | --- | --- | ---
`udptlstart` | `Unsigned Integer` | `4000` | `false` | The start of the UDPTL port range
`udptlend` | `Unsigned Integer` | `4999` | `false` | The end of the UDPTL port range
`udptlchecksums` | `Boolean` | `yes` | `false` | Whether to enable or disable UDP checksums on UDPTL traffic
`udptlfecentries` | `Unsigned Integer` |  | `false` | The number of error correction entries in a UDPTL packet
`udptlfecspan` | `Unsigned Integer` |  | `false` | The span over which parity is calculated for FEC in a UDPTL packet
`use_even_ports` | `Boolean` | `no` | `false` | Whether to only use even-numbered UDPTL ports
`t38faxudpec` | `Custom` |  | `false` | Removed
`t38faxmaxdatagram` | `Custom` |  | `false` | Removed

### Import Version

This documentation was imported from Asterisk Version SVN-branch-13-r420717