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This is an automatically generated e-mail. To reply, visit:
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line11917" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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(Diff revision 6)
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>if (cur->channel >= start && cur->channel <= end) {</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This does not handle the "all" case where start=0, end=0.
If the "all" case is changed to 1 and MAX_INT then you don't have to also worry about the existing pseudo channel.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This is a loop that is supposed to fail the call in advance if there is any existing channel in the range. Using the range 1-MAX_INT would fail this call if there is any existing channel. The special values 0 and 0 are checked for in build_channels (the values of wanted_channels_start and wanted_channels_end).</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line15289" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int pri_destroy_dchan(struct sig_pri_span *pri)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>pri_destroy_dchan(pri);</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Call sig_pri_init_pri() after destroying the D channel here. At this point we know that the whole span is destroyed and we must setup to be able to recreate the span.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I'm not sure why it should. But if this needs to be done, it should probably be called from pri_destroy_dchan() itself.</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line15759" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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(Diff revision 6)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_cli_entry dahdi_mfcr2_cli[] = {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>start = atoi(a->argv[3]);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>if (start < 1) {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>ast_cli(a->fd, "Invalid starting channel number %s.\n",</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>if (a->argc == 5) {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>end = atoi(a->argv[4]);</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Use sscanf() instead of atoi().</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I prefer atoi() to sscanf in case the input will clearly not be 0. The replacement code with sscanf is less readable and IMHO slightly more error prone:
res = sscanf(a->argv[3], "%30d", &start); // why 30?
if (res != 1 || start < 1) {</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line15782" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_cli_entry dahdi_mfcr2_cli[] = {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>return (RESULT_SUCCESS == ret) ? CLI_SUCCESS : CLI_FAILURE;</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Just return success here.
When the destroy channel call returns, there are no channels in the range. Whether there were any channels in the range to begin with doesn't really matter does it?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Right. dahdi_destroy_channel_range() can't fail right now as destroy_channel() pretends not to never fail.</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line15796" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_cli_entry dahdi_mfcr2_cli[] = {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>e->usage = "Usage: dahdi create channels <all> <from_chan> [<to_chan>]\n";</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I think a note of caution is need here.
You cannot add arbitrary channels in any order. ISDN and SS7 require whole spans to be added at once.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Added. Note that Users have been able to add partial spans before (using chan_dahdi.conf).</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line15805" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_cli_entry dahdi_mfcr2_cli[] = {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>ret = dahdi_create_channel_range(0, 0);</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">It would probably be best if "all" passed in 1 and MAX_INT. Then you don't have to worry about the already created pseudo channel mucking up the create channels request.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The pseudo channel will not be re-created as has_pseudo can not be reset to 0.</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static struct ast_cli_entry dahdi_mfcr2_cli[] = {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>start = strtol(a->argv[3], &endptr, 10);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>if (!endptr || *endptr != '\0') {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>ast_cli(a->fd, "Invalid starting channel number '%s'.\n",</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>a->argv[3]);</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>return CLI_FAILURE;</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>}</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span>if (a->argc == 5) {</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span>end = strtol(a->argv[4], &endptr, 10);</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Use sscanf() instead of strtol().</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">What's wrong with strtol? Reading again, I think I prefer here atoi() as above.</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line17719" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int build_channels(struct dahdi_chan_conf *conf, const char *value, int reload, int lineno, int *found_pseudo)</pre></td>
<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int build_channels(struct dahdi_chan_conf *conf, const char *value, int reload, int lineno)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>if ((conf->wanted_channels_start &&</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>real_channel < conf->wanted_channels_start) ||</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>(conf->wanted_channels_end &&</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> real_channel > conf->wanted_channels_end)) {</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This test could be:
if (conf->wanted_channels_start && (real_channel < conf->wanted_channels_start || conf->wanted_channels_end < real_channel)) {
continue;
}
If you have a start channel you will have an end channel. Otherwise, you have no range and all channels need to be created.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">wanted_channel_start and wanted_channel_stop are defined to be independent. I don't want to assume anything else.</pre>
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<p style="margin-top: 0;">On July 18th, 2013, 6:43 p.m. UTC, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/1598/diff/6/?file=41561#file41561line17723" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/channels/chan_dahdi.c</a>
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(Diff revision 6)
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int build_channels(struct dahdi_chan_conf *conf, const char *value, int reload, int lineno, int *found_pseudo)</pre></td>
<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int build_channels(struct dahdi_chan_conf *conf, const char *value, int reload, int lineno)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>/*</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * TODO: a check is needed to know if this is</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * a dahdi_create_channels() load or an initial</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * load.</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> */</pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Is this note still needed?</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Not needed.</pre>
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<p>- Tzafrir</p>
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<p>On July 22nd, 2013, 5:28 p.m. UTC, Tzafrir Cohen wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By Tzafrir Cohen.</div>
<p style="color: grey;"><i>Updated July 22, 2013, 5:28 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This code adds chan_dahdi the command 'dahdi create channels <range>' (where <range> is a single <n>-<m> or 'all') and updates 'dahdi destroy channel' with a similar 'dahdi destroy channels'.
This change is intended to provide a hook for a script running from udev once a span has been assigned ("registered") / unassigned ("unregistered") for its channels. The udev hook configures the span's channels with dahdi_cfg -S, and can then ask Asterisk to create ethe channels. See the scripts added to DAHDI-tools in 2.7.0.
This means that a separate DAHDI init script (running before the Asterisk one) would no longer be required. There is no longer a need to run a single command after all DAHDI devices are up.
If you use those new DAHDI settings you should set ignore_failed_channels in chan_dahdi.conf to avoid missing a channel failing the startup of chan_dahdi (with potentially other channels already available).</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Works well with analog devices and mostly tested with ISDN devices.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/channels/chan_dahdi.c <span style="color: grey">(394567)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/1598/diff/" style="margin-left: 3em;">View Diff</a></p>
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