kx t7736phone get incoming call how can two phones same house hold talk together

conference call will allow 2 internal phones and one outside line talk together

Here is a link to the User Guide.

Link

I think what you are looking for is on page 5.

Three-Party Conference

If I am incorrect, I am sure other will set both of us straight.

If you're into punishment, Executive Busy Override also works :-)

I'm not sure if it works on the 624, but on my 848 I can press the lit CO button and it releases the privacy for 5 seconds or so. My 824 bench system is out on loan.

Carl