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From: mtd@cbnewsb.cb.att.com (Mario T DeFazio)
Newsgroups: comp.sys.att
Subject: Re: Data Flow Control on an AT&T 3B2/300 SYSV.2
Summary: use stty
Keywords: 3B2 Flow Control
Message-ID: <1991May18.054606.16286@cbfsb.att.com>
Date: 18 May 91 05:46:06 GMT
References: <415@alix.UUCP>
Sender: news@cbfsb.att.com
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 28

In article <415@alix.UUCP>, isolated@alix.UUCP (20 James D. Corder) writes:
> 
> 	How to you check to see if data flow control is turned on
> with an AT&T 3B2/300 SYSV.2.  If not on, how to you turn it on?
> 
> James D. Corder
> alix!jdc@zaphod.mps.ohio-state.edu

Assuming you are trying to set software flow control for
a typical login session, enter the command 
		$ stty -a 

and look for 'ixon'.  If it appears as 'ixon', DC3-DC1 flow control
is enabled (i.e., the host will act on receipt of these characters).
If it appears as '-ixon', it's disabled.
Likewise, to turn it on or off, enter "stty ixon" or "stty -ixon".

If you want to look at the flags for a port other than the one
you are logged onto, enter
		$ stty -a < /dev/tty_whatever

[I'll hold off on hardware (RTS-CTS) flow control since I probably
have already answered your question.]

Mario T DeFazio			AT&T EasyLink Services, Lincroft, New Jersey
AT&T Mail: !mdefazio		
Internet:  mdefazio@attmail.com  Voice: (908)576-2590 
           mtd@pegasus.att.com