# t1 fdl carrier

#### Syntax

[ no ] t1 channel fdl carrier

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies that an interface is used in the carrier environment of a T1 channel on a CT3 interface. The no version restores the default situation, in which an interface does not operate in the carrier environment.

#### Options

- channel—One or more individual T1 channels, ranges of T1 channels, or combination of individual channels and ranges, in the range 1–28 (no spaces); for example, 3,7-15,19-13,27

#### Mode

Controller Configuration