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.\"
.IX Title "XPP_SYNC 8"
.TH XPP_SYNC 8 "2024-01-05" "perl v5.36.0" "User Contributed Perl Documentation"
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.nh
.SH "NAME"
xpp_sync \- Handle sync selection of Xorcom Astribanks.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
xpp_sync <auto|dahdi|nn>
.PP
xpp_sync [\-v]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
On a normal operation one Astribank device provides timing for all the
other Astribank devices.
.PP
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.
.PP
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 .
.SS "Parameters"
.IX Subsection "Parameters"
.IP "auto" 4
.IX Item "auto"
Automatically selects the best Astribank for syncing.
.IP "dahdi" 4
.IX Item "dahdi"
Gets synchronization from the Dahdi sync master.
.IP "nn" 4
.IX Item "nn"
Sets \s-1XBUS\-\s0\fInn\fR as sync source.
.IP "\-v" 4
.IX Item "-v"
Also print the numeric xpp sync rank.
.PP
(Parameter name is case-insensitive)
.SS "Example output:"
.IX Subsection "Example output:"
.Vb 11
\&        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
\&        ==================================================
.Ve
.PP
In this example we see that the recommended xpp sync master is \s-1XBUS\-02\s0 \-
it is the first on the list. It is also the actual syncer, as we can see
from the '+' beside it.
.PP
xpp_sync is normally called from the dahdi init.d script.
The parameter it is called with defaults to
\&\fIauto\fR, but it is possible to override that parameter (e.g: set it to
\&\fIdahdi\fR) through the value of \s-1XPP_SYNC\s0 in /etc/dahdi/init.conf .
.SH "FILES"
.IX Header "FILES"
.IP "/sys/bus/astribanks/drivers/xppdrv/sync" 4
.IX Item "/sys/bus/astribanks/drivers/xppdrv/sync"
xpp_sync is essentially a nicer interface to
\&\f(CW\*(C`/sys/bus/astribanks/drivers/xppdrv/sync\*(C'\fR. That file
shows the current xpp sync master.
.Sp
Writing to it, force \s-1XPP\s0 drivers to use a different sync master
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBdahdi_registration\fR\|(1), \fBdahdi_cfg\fR\|(1), \s-1README\s0.Astribank