jacc@tekig5.PEN.TEK.COM (Jac Colby) (01/31/89)
Hold-off, line eater!
I am looking for any standard that covers the use of RS-232 RTS-CTS
signals for bi-directional flow control in the way that "smart" modems
commonly use them. EIA-232-D, of course, defines RTS quite differently
from the way it is now commonly used. TSB-24 from EIA appears to
suitably define CTS, but I have yet to find any formal standardization
for the use of RTS.
I have been told that CCITT addressed this subject at their November
plenary meeting, but I have no details. It may be covered in the new
"blue books" (V.24 or X.20?), or as a separate item. If anyone has
knowledge of or access to the CCITT minutes/drafts/etc., would you
please let me know whether or not RTS-CTS is so covered, and if so,
how.
This information is being sought on behalf of the IEEE-P1174 standards
committee. P1174 is an outgrowth of IEEE-488. IEEE-488 is also known
as GPIB or General Purpose Instrument Bus. (IEC-625 is the equivalent
international standard). P1174 is an effort to standardize the control
of test and measurement instruments using RS-232 type interfaces. (That
is, to use the IEEE-488.2 protocols over RS-232 instead of IEEE-488.1).
Jac Colby jacc@tekig5.TEK.COM
Tektronix Inc {ucbvax,decvax,pur-ee,cbosg,ihnss,hplabs}!tektronix!tekig5!jacc
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