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This depends on the type of signalling you use!<br>
<br>
ISDN uses only 1 D channel that is chan 16 for EuroISDN. All other
variants of ISDN (Q.Sig, 1TR, DPNSS, PSS1 etc) I know do the same.
SS7/C7 is a different story as they can use up to 30 'links', but the
most common is actually still 1 link at channel 16.<br>
<br>
jvb<br>
Andrew Latham wrote:
<blockquote
cite="midc39c115d0512070445k61fdbd0eu52d8034c846e4d19@mail.gmail.com"
type="cite">
<pre wrap="">If I remember correctly an E1 has two D-Channels. Check your notes on
what channels 31, 32 really do.....
On 12/7/05, Laszlo Megyer <a class="moz-txt-link-rfc2396E" href="mailto:laszlo.megyer@gmail.com"><laszlo.megyer@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hey folks,
I have my linuxbox connected to a PBX through a digium te110p card, E1 line.
The asterisk is set up to be the timing master for the line.
recently run into the following error message when starting asterisk:
The message:
---------
== Primary D-Channel on span 1 down
Dec 7 11:34:02 WARNING[1105]: chan_zap.c:2282 pri_find_dchan: No
D-channels available! Using Primary channel 16 as D-channel anyway!
== Primary D-Channel on span 1 up
Also the yellow alarm is not cleared on the PBX side. Any
recommendations for the problem?
Or should I use Tie-line connection between the PBX and asterisk somehow?
thanks,
lez
config files follow:
my /etc/zaptel.conf:
-------------------8<-----------
span=1,0,0,ccs,hdb3
bchan=1-15,17-31
dchan=16
my /etc/asterisk/zapata.conf:
----------------8<-------------------
[trunkgroups]
[channels]
spanmap => 1,1,1
usecallerid=yes
hidecallerid=no
language=en
callwaiting=no
threewaycalling=yes
transfer=yes
echocancel=yes
echotraining=yes
callreturn=yes
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
immediate=no
; LOCAL CONFIGS:
context = internal
signalling = pri_net
group = 1;
channel => 1-15,17-31
switchtype = national
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</pre>
</blockquote>
<pre wrap=""><!---->
--
---
Andrew Latham - AKA: LATHAMA (lay-th-ham-eh)
<a class="moz-txt-link-abbreviated" href="mailto:lathama@lathama.com">lathama@lathama.com</a> - <a class="moz-txt-link-abbreviated" href="mailto:lathama@yahoo.com">lathama@yahoo.com</a> - <a class="moz-txt-link-abbreviated" href="mailto:lathama@gmail.com">lathama@gmail.com</a>
If any of the above are down we have bigger problems than my email!
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</pre>
</blockquote>
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