xpp_sync(8) [debian man page]
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)
Check Out this Related Man Page
TWINSTAR(8) User Contributed Perl Documentation TWINSTAR(8) NAME
twinstar - Control the Twinstar feature of a Xorcom Astribank SYNOPSIS
twinstar {status|jump|enable-wd|disable-wd|ports} DESCRIPTION
twinstar is a tool to control the Twinstar (dual USB port) of a Xorcom Astribank. There is a single and mandatory argument which is the command to run. That command operates on all the Astribanks connected to the system. Technically all the commands are implemented using Dahdi::Xpp::Mpp which in turn uses astribank_tool. Thus using thus tool will require root permissions or otherwise read/write permissions to the USB device. The twinstar may be in watchdog mode, which means that it will jump to the remote host if it loses contact with the local host. This can happen if the machine is powered down or hangs or even if the xpp drivers are unloaded. Which is why the standard twinstar scripts put the Astribanks in twinstar mode on startup and remove it on normal shutdown. An Astribank will only jump to the other host (either if asked explicitly or by the watchdog) only if there is a different Astribank connected to the other port and running. Which is why all of this has no effect on systems that don't need this functionality. The command are: status Shows the current status of all Astribanks. Note that it only shows Astribanks whose current active USB port is the one connected to this computer. Example output: DEVICE PORT WATCHDOG POWER0 POWER1 usb:001/010 0 on yes yes usb:001/011 0 on yes yes For each Astribank on the system that has Twinstar support we get: Device The address of the device. This is the bus address, e.g. the address you see in lsusb / dahdi_hardware. Port The active USB port on the Astribank. This should be always '0' on the master and always 1 on the slave. Watchdog on if the watchdog is triggered in the Atribank or off otherwise. Power0, Power1 Shows which ports of this Astribank are connected to a USB port of a running computer. This only shows whether or not the USB host provides power. ports Shows the same 'Port' column of the status command. jump Command all the Astribanks to jump to the other port. This works regardless the watchdog mode is enabled or not. But requires that there is power on the other port. enable-wd Enables watchdog mode. disable-wd Disables watchdog mode. FILES
twinstar mostly uses astribank_tool which in turn mostly uses USB files under /dev/bus/usb . perl v5.14.2 2010-07-28 TWINSTAR(8)