# ntpd &
# sleep 600;ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
+ntp1.jst.mfeed. mf-isdn4.mfeed.  2 u  438 1024  377   20.642    1.051   0.378
*ntp2.jst.mfeed. mf-isdn1.mfeed.  2 u  685 1024  377   20.422    1.562   0.181
+ntp3.jst.mfeed. mf-isdn4.mfeed.  2 u 1387 1024  346   20.019    1.967   1.128