Front panel line seize button.
- Call drop button, autoanswer/monitor-TAP switch
- Audio mute switch, and off-hook and ring indicators.
- A rear panel RJ-11 is provide for connection to a POTS line along with a second RJ-11 loop-thru jack that may be configured to disconnect attached devices when the TT-1 Plus goes off-hook.
- Plug-in euroblock screw terminals along with 3.5mm TRS jacks are provided for balanced send and caller audio.
- Plug . . .