can't get csh term terminate when modem drops

[Mike Powell "Networks are Nifty"]

I cannot seem to get the shell to terminate when the carrier is lost.
specificly, I cannot get the stty option nohang to be set for the 
default shell. I looked in the manual for gettytab and found the 
"hc" option which says default do not hangup, how do I change this?
Mike

-- 
Mike Powell	(need a change of altitude)
Disclaimer: I speak for myself and only myself.
internet: powell at issm.iss.contel.com
Usenet: {contel-fss,issm}!powell