Who notifies the coach about a disqualified player?

[BillyMac]

Originally Posted by BillyMac

I don't believe that there is anything "official" in the rulebook, or manual.

From IAABO Two Person Manual (Page 53, Foul Procedures, B. Reporting The Foul, 10.):
If a player disqualification is involved, the ruling official has the option of going opposite side, and the noncalling official may notify the coach, inform timer to start clock, notify player and administer substitutions.

From NFHS Basketball Officials Manual (Page 37, 2.4.2 Fouls, H. Disqualification Procedure):
1. The non-calling official shall notify the coach and request the timer to
begin the replacement interval, and then notify the disqualified player.
2. The calling official should take a position with the ball at the top of the
arc on the end of the court where play will be resumed.
3. The non-calling official should take a position on the division line half
way between the center circle and the sideline nearer the table to
administer the substitution.
4. Immediately after the substitution, the officials shall return to their
proper positions for the subsequent throw-in or free throw.