This feature allows individual trunks to be assigned to line keys on multiline telephone sets. The user can select a specific trunk for the purpose of originating a call or may answer an incoming call that appears on the appearance of that trunk. To originate a call, the user presses the appropriate line key and dials the desired number (no dial tone is returned). To answer an incoming call, the user presses the line key that has "ringing indication".
Depending on the activity status of the line, the line key LED indicator will either flash or remain solid.
See Trunk Select - Direct and Line Status: Multi-Color LED Indication for more information.
See for more information.