1FXOTUNE(8) System Manager's Manuals: Asterisk FXOTUNE(8)
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6 fxotune - automatically tune DAHDI FXO channels
7
9 fxotune -i [options] - detect mode
10 fxotune -d [ options ] - dump mode
12 fxotune -s - Startup mode
14
18 fxotune is a script that fine-tune parameters of the FXO modules of the
19 card. It has three modes of operation:
20 Detect mode (-i): it detects and tunes all the available FXO channels.
22 It writes settings to a configuration file (/etc/fxotune.conf) from
23 which it can be loaded (e.g: at startup) using -s .
24 Dump mode (-d): Runs detection on a single DAHDI channel, and just
26 dumps waveforms to fxotune_dump.vals is generated in the current direc‐
27 tory.
28 Startup mode (-s): fxotune just reads the settings from fxotune.conf
30 into the FXO modules.
31 You are advised to run fxotune on all FXO ports you have that support
33 it and that are connected. Note that the tunning is affected by e.g.
34 the physical parameters of the connection, and thus if it has been rad‐
35 ically changed, you may need to re-run fxotune.
36 This program only works for the Digium TDM400P/800P/2400P cards and
38 compatible and the Xorcom Astribank devices. Other cards (notably X100P
39 cards and clones) do not have the hardware to support such tuning.
40 The tuning process needs a clear line to do the tuning. In order to do
42 that, it runs in cycles of the following: sets the line off-hook, dials
43 a dial string (which should set the PSTN provider waiting for the next
44 digit), and then starts tuning. It has a limited ammount of time for
45 tuning before the PSTN gives up and gives a busy tone. So after a while
46 it hangs up and starts a new cycle.
47 fxotune has two operation modes: tune (-i) and set (-s). In the tune
49 mode it generates /etc/fxotune.conf, and in the set mode it merely
50 applies the parameters from fxotune.conf to device's ports.
51
54 The following options below except -v (verbose) affect only the detec‐
55 tion process and hence apply only to the detect and dump modes.
56 In addition, to maintain compatibility with older versions of fxotune,
58 if in detect or dump mode there is a parameter with option before it,
59 it is considered to be the dialstring parameter (-n).
60 -b startdev
62 Start tuning from dahdi channel num. startdev: skip all previ‐
63 ous channels. By default starting from channel 1.
64 In dump mode (-d) this is the single channel that will be
66 tested.
67 -e stopdev
69 Tune only up to dahdi channel num. stopdev: skip all previous
70 channels. By default stopping at channel 252.
71 In dump mode (-d) this parameter is ignored.
73 -l delay-to-silence
75 Time in seconds to wait after dialing the dial-string to get a
76 clear line. The default is 0. before
77 -m silence-good-for
79 Time in seconds which states how long the PSTN will wait after
80 we dialed the dial-string until it starts giving a busy tone.
81 You can test this by connecting an analog phone to the line and
82 dialing.
83 The default is 18 (18 seconds).
85 -n dial-string
87 Digits to dial to the PSTN in order to get it stop its dialtone
88 and waiting for the next digit.
89 The default is "4" (sending just the digit 4). It should work in
91 most cases. Again, this can be tested by connecting a phone to
92 the PSTN line and dialing the dial-string.
93 -t detect-type
95 This option allows using the older detection method used by fxo‐
96 tune of Zaptel 1.2. use -t 1 for that older method. whereas -t 2
97 (the default) uses the current method.
98 This option only applies to detect mode (-i).
100 -v[vvvv]
102 Sets debugging on. The more v-s, the higher debug level.
103 Note that: -vv -v will actually set debug level to 1 instead of
105 3.
106 -w wave-form
108 The default: -1, for multitone waveform. Alternatively: a fre‐
109 quency of a single tone.
110 This option only applies to dump mode (-d).
112
116 fxotune -i 9
117 if you need to dial 9 for an external line. If you always get a line,
118 you can simply use any digit.
119 -s
121 Load settings from the last test. Used at startup.
122
125 /etc/fxotune.conf
126 The configuration file generated by fxotune in detect mode and
127 from which configuration is loaded when -s is used.
128
131 Running fxotune takes approximately a minute per port. If you wish to
132 only run fxotune for several ports, you can use the options -b and -e
133 to set a specific range of ports. Another useful trick is to actually
134 keep asterisk running, and only "destroy" the dahdi channels you wish
135 to tune (dahdi destroy channel NNN): other channels will be used by
136 Asterisk, and hence skipped. This can be useful if you have many FXO
137 ports that are not connected.
138 fxotune writes immediately to /etc/fxotune.conf so if you stop it half-
140 way, you may get a half-configured system. If you have already tuned
141 your FXO channels and wish to test-run fxotune again, you are advised
142 to backup /etc/fxotune.conf .
143 The default for -m is 18 seconds. This asusmes that you get a clear
145 line for at least 18 seconds. It is advised that you test that timeout
146 earlier by connecting a phone to the FXO line, dialing 4 (or whatever
147 dial string you put with -n) and see how much time of silence you have.
148 If you connect your device to a PSTN provider that is not in the US,
150 there is a similar operation you should apply before even getting to
151 fxotune: setting the opermode. The opermode sets a number of country-
152 specific parameters. For the Digium analog cards this is set through
153 the kernel module parameter 'opermode' . For the Xorcom Astribank this
154 is set through the variable 'opermode' in /etc/dahdi/xpp.conf . For
155 valid values of this parameter, see /usr/share/asterisk/init_fxo_modes
156 (FIXME: this has changed and will change. Tzafrir).
157
160 dahdi_cfg(8), dahdi_tool(8), dahdi_monitor(8), asterisk(8).
161
164 This manual page was written by Tzafrir Cohen <tzafrir.cohen@xor‐
165 com.com> Permission is granted to copy, distribute and/or modify this
166 document under the terms of the GNU General Public License, Version 2
167 any later version published by the Free Software Foundation.
168 On Debian systems, the complete text of the GNU General Public License
170 can be found in /usr/share/common-licenses/GPL.
171asterisk 9 June 2007 FXOTUNE(8)