XPP_SYNC(8)						User Contributed Perl Documentation					       XPP_SYNC(8)

NAME

       xpp_sync - Handle sync selection of Xorcom Astribanks.

SYNOPSIS

       xpp_sync <auto|dahdi|nn>

       xpp_sync [-v]

DESCRIPTION

       On a normal operation one Astribank device provides timing for all the other Astribank devices.

       When run without parameters, xpp_sync will display a list of Astribanks (xbuses) that are connected and registered as Dahdi spans. The
       current xpp sync master will be marked.

       If you this an Astribank is connected and yet it does not appear on the output of xpp_sync, it may be unregistered. Try running
       dahdi_registration .

   Parameters
       auto
	   Automatically selects the best Astribank for syncing.

       dahdi
	   Gets synchronization from the Dahdi sync master.

       nn  Sets XBUS-nn as sync source.

       -v  Also print the numeric xpp sync rank.

       (Parameter name is case-insensitive)

   Example output:
	       Setting SYNC
	       Current sync: 01
	       Best Available Syncers:
		+ XBUS-01 (usb-0000:00:10.4-3) [usb:12345678]	    [ PRI_TE PRI_NT PRI_TE PRI_NT ]
		  XBUS-00 (usb-0000:00:10.4-2) [usb:QA-01]	    [ FXS FXO ]
	       ==================================================
	       WARNING: FXO which is not the syncer cause bad PCM
			Affected Astribanks are:
	       --------------------------------------------------
		       XBUS-00
	       ==================================================

       In this example we see that the recommended xpp sync master is XBUS-02 - it is the first on the list. It is also the actual syncer, as we
       can see from the '+' beside it.

       xpp_sync is normally called from the dahdi init.d script.  The parameter it is called with defaults to auto, but it is possible to override
       that parameter (e.g: set it to dahdi) through the value of XPP_SYNC in /etc/dahdi/init.conf .

FILES

       /proc/xpp/sync
	   (Deprecated: no longer supported) xpp_sync is essentially a nicer interface to /proc/xpp/sync . That file shows the current xpp sync
	   master (and in what format you need to write to it to set the master).

SEE ALSO

       dahdi_registration(1), dahdi_cfg(1), README.Astribank

perl v5.14.2							    2009-09-30							       XPP_SYNC(8)