dead air after answering

DEAD AIR NO ONE ON THE OTHER END ?

I answered the phone on the first ring. My called ID said it was coming from 503-292-2081 ("P B S ASOC")

No one answered me.

I kept saying, "Hello, hello...I can't hear you."

Then, "click", as it disconnected.

So who are these clowns, and what do they want?

Call from 503-292-2081 "P B S Asoc" on caller ID.  When I answered, they hung up.

PBS Asoc from 503-292-2081 cold called me today and like the others hung up on me when answered. I did a little research and believe this company is Paul B Sanders & Associates, 1712 Wentworth Place, Plano TX 75075 but could not find out more about them without some effort. Who knows why they are calling and hang up? Usually such things are to verify a phone so they can sell the number to those who cold call you trying to sell something.