Update of /usr/cvsroot/asterisk In directory mongoose.digium.com:/tmp/cvs-serv1014
Modified Files: Tag: v1-0 README Log Message: add note about the effects of time changes (bug #4020) Index: README =================================================================== RCS file: /usr/cvsroot/asterisk/README,v retrieving revision 1.29 retrieving revision 1.29.2.1 diff -u -d -r1.29 -r1.29.2.1 --- README 25 Aug 2004 14:14:57 -0000 1.29 +++ README 10 May 2005 04:09:21 -0000 1.29.2.1 @@ -136,6 +136,30 @@ the channels 25 through 47 of the tormenta card, obtaining the settings from the variables specified above. +* SPECIAL NOTE ON TIME + + Those using SIP phones should be aware the Asterisk is sensitive to +large jumps in time. Manually changing the system time using date(1) +(or other similar commands) may cause SIP registrations and other +internal processes to fail. If your system cannot keep accurate time +by itself use NTP (http://www.ntp.org/) to keep the system clock +synchronized to "real time". NTP is designed to keep the system clock +synchronized by speeding up or slowing down the system clock until it +is synchronized to "real time" rather than by jumping the time and +causing discontinuities. Most Linux distributions include precompiled +versions of NTP. Beware of some time synchronization methods that get +the correct real time periodically and then manually set the system +clock. + + Apparent time changes due to daylight savings time are just that, +apparent. The use of daylight savings time in a Linux system is +purely a user interface issue and does not affect the operation of the +Linux kernel or Asterisk. The system clock on Linux kernels operates +on UTC. UTC does not use daylight savings time. + + Also note that this issue is separate from the clocking of TDM +channels, and is known to at least affect SIP registrations. + * MORE INFORMATION See the doc directory for more documentation. _______________________________________________ Asterisk-Cvs mailing list Asterisk-Cvs@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-cvs