Greetings,
Lot of people responded to my original question:
I am trying to setup a dialout facility on my SunOS 4.1.3_U1.
I am having difficulty trying to get my c program to talk to
the modem port. (/dev/ttya).
The program just hangs while trying to open this port.??
Thank you very much for everyone who answered my question.
Here goes the summary.....
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Basically, my problem was with the device file /dev/ttya.
The name of the device file usually used for modem is /dev/cua0 with
major device = 12 and minor = 128.
Also, the command ttysoftcar -n /dev/cua0 must be in the rc.local
to switch off software carrier detection.
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There is a procedure in the "System and Network Admin " manual in
chapter 11.
The short version is
cd /dev
mknod cua0 c 12 (This is linked to /dev/ttya)
chmod 600 cua0
chown uucp cua0
Next, add the following in /etc/ttytab
cua0 "/usr/etc/getty std.9600" unknown off remote secure.
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Another solution is to do the following:
1.) As Superuser, I made the device cub0 for dial-out.
T then moved ttyb to ttyd0 for dial-in.
2.) I edited /etc/ttytab to include
ttyb "/use/etc/getty std.9600" unknown off local secure
ttyd0" /use/etc/getty std.38400" dialup on remote
3.) Using eeprom, I set
ttyb-ignore-cd=false
ttyb-rts-dtr-off=true
4.) I turned off soft carrier on ttyd0. In /etc/rc I set
/usr/etc/ttysoftcar -n ttyd0 >/dev/null 2>&1
5.) I edited /etc/remote as shown in the System and Network Admin book.
6.) Re-booted the system
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Finally, some good reading material can be found in the O'Reilly Book
"Managing UUCP and Usenet" by Tim O'Reilly & Grace Todino.
A PostScript file by Syed Zaeem Hosain from
ftp.zyxel.com:/pub/other/zyx_sun.ps.Z
Cheers
Ashok
TSSC NZ Telecommunication System Support Center
A
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