1XPP_SYNC(8)           User Contributed Perl Documentation          XPP_SYNC(8)
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NAME

6       xpp_sync - Handle sync selection of Xorcom Astribanks.
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SYNOPSIS

9       xpp_sync <auto|dahdi|nn>
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11       xpp_sync [-v]
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DESCRIPTION

14       On a normal operation one Astribank device provides timing for all the
15       other Astribank devices.
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17       When run without parameters, xpp_sync will display a list of Astribanks
18       (xbuses) that are connected and registered as Dahdi spans. The current
19       xpp sync master will be marked.
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21       If you this an Astribank is connected and yet it does not appear on the
22       output of xpp_sync, it may be unregistered. Try running
23       dahdi_registration .
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25   Parameters
26       auto
27           Automatically selects the best Astribank for syncing.
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29       dahdi
30           Gets synchronization from the Dahdi sync master.
31
32       nn  Sets XBUS-nn as sync source.
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34       -v  Also print the numeric xpp sync rank.
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36       (Parameter name is case-insensitive)
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38   Example output:
39               Setting SYNC
40               Current sync: 01
41               Best Available Syncers:
42                + XBUS-01 (usb-0000:00:10.4-3) [usb:12345678]       [ PRI_TE PRI_NT PRI_TE PRI_NT ]
43                  XBUS-00 (usb-0000:00:10.4-2) [usb:QA-01]          [ FXS FXO ]
44               ==================================================
45               WARNING: FXO which is not the syncer cause bad PCM
46                        Affected Astribanks are:
47               --------------------------------------------------
48                       XBUS-00
49               ==================================================
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51       In this example we see that the recommended xpp sync master is XBUS-02
52       - it is the first on the list. It is also the actual syncer, as we can
53       see from the '+' beside it.
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55       xpp_sync is normally called from the dahdi init.d script.  The
56       parameter it is called with defaults to auto, but it is possible to
57       override that parameter (e.g: set it to dahdi) through the value of
58       XPP_SYNC in /etc/dahdi/init.conf .
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FILES

61       /sys/bus/astribanks/drivers/xppdrv/sync
62           xpp_sync is essentially a nicer interface to
63           "/sys/bus/astribanks/drivers/xppdrv/sync". That file shows the
64           current xpp sync master.
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66           Writing to it, force XPP drivers to use a different sync master
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SEE ALSO

69       dahdi_registration(1), dahdi_cfg(1), README.Astribank
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73perl v5.34.1                      2022-06-21                       XPP_SYNC(8)
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