Carrier Access Multi-Service Router (MSR) Card MSR/Adit 3K GUI User Manual
Page 237

Adit 3000 (Rel. 1.6) and MSR Card (Rel 2.0) GUI
6-31
Voice over IP
Trunk Settings
Field
Definition
Assignment
in-out - Allows comminution in both directions. Default.
in - Allows communication in the IN direction only.
out - Allows communication in the OUT direction only.
unassigned - Puts the channel out-of-service (down).