hdoverobinson/socat-ntp-acts.txt

## socat-ntp-acts.txt
#This is currently used by an NTP server to access a V.92 modem over the LAN to dial the NIST ACTS.
#The options here work using a USR5686G modem over a PL2303 USB to RS232 adapter with NTP 4.2.8p8.
#NTP expects a device called "acts1" at 19200 baud. You should adjust the port number, character device file, baudrate, and lockfile to suit your environment.
#NTP will not autobaud after a successful connection using this method. The modem init string in ntpd/refclock_acts.c must be edited to lock the modem to 19200 baud.
#A ping test was added to the client to limit the number of retries it makes during a network outage.
#These are placed in startup scripts run by a cronjob.

#socat-server
/usr/bin/screen -dmS socat-server-acts1 /bin/bash -c "while true; do /usr/bin/socat -v -d -d -d -t10 tcp-l:54321,reuseaddr,keepalive file:/dev/ttyUSB0,b19200,nonblock,raw,echo=0,cread,cs8,crtscts,min=1,time=0,nl0,cr0,tab0,bs0,vt0,ff0,waitlock=/var/run/ttyUSB0.lock; done"

#socat-client
/usr/bin/screen -dmS socat-client-acts1 /bin/bash -c "while true; do /bin/ping -c5 socat-server-acts1.local && /usr/bin/socat -v -d -d -d pty,link=/dev/acts1,raw,echo=0,waitslave,user=root,group=dialout,mode=660 tcp:socat-server-acts1.local:54321,keepalive,ignoreeof; echo 'Restarting...'; sleep 5s; done"
	#This is currently used by an NTP server to access a V.92 modem over the LAN to dial the NIST ACTS.
	#The options here work using a USR5686G modem over a PL2303 USB to RS232 adapter with NTP 4.2.8p8.
	#NTP expects a device called "acts1" at 19200 baud. You should adjust the port number, character device file, baudrate, and lockfile to suit your environment.
	#NTP will not autobaud after a successful connection using this method. The modem init string in ntpd/refclock_acts.c must be edited to lock the modem to 19200 baud.
	#A ping test was added to the client to limit the number of retries it makes during a network outage.
	#These are placed in startup scripts run by a cronjob.

	#socat-server
	/usr/bin/screen -dmS socat-server-acts1 /bin/bash -c "while true; do /usr/bin/socat -v -d -d -d -t10 tcp-l:54321,reuseaddr,keepalive file:/dev/ttyUSB0,b19200,nonblock,raw,echo=0,cread,cs8,crtscts,min=1,time=0,nl0,cr0,tab0,bs0,vt0,ff0,waitlock=/var/run/ttyUSB0.lock; done"

	#socat-client
	/usr/bin/screen -dmS socat-client-acts1 /bin/bash -c "while true; do /bin/ping -c5 socat-server-acts1.local && /usr/bin/socat -v -d -d -d pty,link=/dev/acts1,raw,echo=0,waitslave,user=root,group=dialout,mode=660 tcp:socat-server-acts1.local:54321,keepalive,ignoreeof; echo 'Restarting...'; sleep 5s; done"