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ntp.conf : need settings for a refclock using Symmetricom bc635PCI timing card

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http://www.linuxquestions.org – Hello, I have setup a box using RHEL-5 inside a private network, no outside connections, and I've got a Symmetricom bc635PCI-V2 clock card installed and working. It's getting GPS time via IRIG-B feeding the PCI card from a TrueTime GPS receiver. I need to setup the NTP software to use the time from the PCI card. Which means I need to setup a /dev/refclock-? symbolic link to the driver as far as I know? I can't find any documentation on the bc635 card that associates the refclock to the driver. Does anyone know what settings I need to use in the server line of the ntp.conf file? Server 127.127.<type>.<unit> (anything else needed?) Thanks!! (HowTos)