You know how to Talk. You know how to Listen. But did you know you can Talk AND Listen at the same time? Here's a brief explanation of the various Talk and Listen button options you might encounter along the way.....
MOMENTARY: by pressing and holding the button for the duration of time it is engaged, you "open" the port. When you let go, you "close" the port.
LATCHING: by tapping the button, you "open" the port and "close" the port by tapping the button again.
TALK: when you push the button, you "talk" to the system, but there is no "listen" function.
LISTEN: when you push the button, you can "listen" to the port, but there is no "talk" function.
TALK & LISTEN: when you push the button, you can both "talk" and "listen" to that port, but when you unlatch - or take your finger off the button, both "talk" and "listen" stops working.
DUAL TALK & LISTEN: by tapping the button, you latch the "listen" so that it stays on. To "talk" to the port, you press the button. To stop talking, let go of the button. You can't latch both the "talk" and the "listen" in this mode, only the "listen".
TALK WITH A FORCED LISTEN: The "listen" is always on. To turn it down or off, rotate the volume knob counterclockwise. You can either latch or push-to-talk (momentary) the "talk" function. This is the most common scheme used for Partylines, as it emulated the two-wire environment.