<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">2013/6/6 jg <span dir="ltr"><<a href="mailto:webaccounts@jgoettgens.de" target="_blank">webaccounts@jgoettgens.de</a>></span><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class="im"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
On 06/06/2013 05:55 PM, Olivier wrote:<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Hi,<br>
<br>
I need to rebuild a system which has 4 BRI ports and is connected to<br>
Point-to-multiPoint lines, in a country where telco often "drop lines<br>
for energy savings".<br>
</blockquote>
<br>
I think the dropped D-channel issue should be handled by a very recent DAHDI. If there are still issues file a bug. Don't know about PtMP.<br></blockquote></div></blockquote><div><br></div><div>I think but I'm far from being certain that PtmP lines are the one concerned by Telco energy savings.<br>
</div><div>If someone could shed some light on this, that would be perfect.<br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class="im"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
</blockquote></div>
I am using ISDN BRI connections for several years now. I have never seen a problem with down states of the D channel. If there is nothing hooked up to the S bus it is very likely that the D channel will be down after a while. When you start the low level driver, the line might still be down. But when you start Asterisk and DAHDI tries to negotiate a TEI value, then the line will connect. So far I have never seen a disconnected state on a BRI-P2MP line while Asterisk is running. To be precise, I always observed periodic RR frames (typically every 10 seconds) when Asterisk is running for apparently idle lines. I have all the docs, but I wasn't motivate enough so far to read them</blockquote>
<div><br></div><div>My case is worse : I didn't even try to get the docs ;-)<br></div><div> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
and learn whether disconnected states are possible with active devices.<div class="im"><br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I'm planning to use latest 11.4.0 asterisk version along with dahdi and<br>
libpri (no misdn).<br>
<br>
Which version are recommended for Dahdi and Libpri ?<br>
</blockquote>
<br>
Probably the very latest you can find. If the latest stable does not work for you then try an RC of an upcoming version or get master from git.<br>
</blockquote></div>
As I said, any recent version should be fine.<div class="im"><br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
My main requirements are, beside having calls coming in and out:<br>
- keep a meaningful "pri show spans" status (pri show spans outputs Down<br>
when the line is down (cable unplugged, no q921 traffic, ...))<br>
- avoid sporadic ERROR messages in logs.<br>
</blockquote></blockquote></div>
Did you have any problems with the line status?<span class=""><font color="#888888"><br></font></span></blockquote><div><br></div><div>Not exactly but I was thinking about tweaks such as <strong class="">layer1_presence</strong>=ignore or
layer2_persistence=keep_up.<br></div><div>I wonder if the later one, didn't mask current line status.<br></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<span class=""><font color="#888888">
<br>
jg</font></span><div class=""><div class="h5"><br>
<br>
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