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<font size="-1"></font><small>Hi Krzysztof,<br>
<br>
Thank you for your reply. It is greatly appreciated!<br>
<br>
Please find my responses below.<br>
<br>
>Alignment on link does not mean that - you start counting CICs
from "1" and your partner does the same (one is one on both sides,
some telco switches count 1st >CIC as 0, or even 2).<br>
Yes. That makes sense.<br>
<br>
<br>
>Here you say, that first available channel has logical number
one, and<br>
>you try to make 1st call on CIC 1, so it looks good.<br>
>Maybe simply - you should try to disable one E1 link? Simply
comment<br>
>out - the second E1 and see if it's not mis-cabling ?<br>
<br>
The system is in another African country so instead of me
physically pulling out the E1 cable from the system I tested by
'blocking' certain CICs in my linkset1 by using the 'ss7 block cic
1 [channel]' command. The provider said that he could see the
corresponding blocked CICs and they appeared to match up to his
CICs. Unfortunately without me being at the same physical location
I am unable to view the provider's equipment and logs to verify
that the CICs are actually matching on his side.<br>
<br>
>If the same "no audio" happen on the only one digital link
(one E1) -<br>
>it's in 99.999% - mis numbered CIC - have you access to any
passive<br>
>"recording" equipment ?<br>
>Another Sangoma card with at least 2 ports could allow for
listening<br>
>if audio is being put on any timeslot (CIC, timeslot, Bchannel
- call<br>
>it as you wish).<br>
Unfortunately I don't have access to recording equipment or
another Sangoma card.<br>
<br>
Something I have picked up in my Asterisk log is the following:<br>
<i>[Aug 1 20:01:21] VERBOSE[30284] chan_dahdi.c: Resetting CIC 47<br>
[Aug 1 20:01:21] WARNING[30284] chan_dahdi.c: RSC on
unconfigured CIC 47<br>
[Aug 1 20:01:51] VERBOSE[30284] chan_dahdi.c: Resetting CIC 63<br>
[Aug 1 20:01:51] WARNING[30284] chan_dahdi.c: RSC on
unconfigured CIC 63</i><br>
<br>
<br>
Could this possibly confirm the CIC alignment problem that we
suspect? I don't have a bchan/CIC configured for 47 or 63<br>
Applicable piece from chan_dahdi.conf:<br>
;First E1<br>
sigchan=16<br>
cicbeginswith=1<br>
channel=1-15<br>
cicbeginswith=17<br>
channel=17-31<br>
<br>
;Second E1<br>
sigchan=47<br>
cicbeginswith=32<br>
channel=32-46<br>
cicbeginswith=48<br>
channel=48-62<br>
<br>
<br>
Thank you for your assistance so far! <br>
<br>
<br>
</small>
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<br>
<font color="#000000"><font face="arial" size="2">Kind regards,</font><br>
<br>
<font color="#000000"><font face="arial"><font size="4">David
Wilson</font></font></font><br>
<font color="#000000"><font face="arial"><font size="1">CNS,CLS,
LINUX+, CLA, DCTS, LPIC3</font></font></font><br>
<font color="#0779b5"><font face="arial"><font size="3"><b>LinuxTech
CC t/a DcData</b></font></font></font><br>
<font color="#0779b5"><font face="arial"><font size="1">CK
number: 2001/058368/23</font></font></font><br>
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<br>
On 08/01/2012 06:41 PM, Krzysztof Drewicz wrote:
<blockquote
cite="mid:CA+7dJfcYBKYz4eZufYt0fCUChEakFEmHMsiVAuw28QjGgfrMfQ@mail.gmail.com"
type="cite">
<pre wrap="">2012/8/1 David Wilson <a class="moz-txt-link-rfc2396E" href="mailto:dave@dcdata.co.za"><dave@dcdata.co.za></a>
</pre>
<blockquote type="cite">
<pre wrap="">
With debugging enabled on my SS7 linkset I see the following in my logs. Unfortunately not being familiar with SS7 it doesn't mean too much to me. Everything that I've read indicates that a "no audio" problem with SS7 generally indicates misaligned CICs but according to the operator they are reported to be aligned ok.
</pre>
</blockquote>
<pre wrap="">
Alignment on link does not mean that - you start counting CICs from
"1" and your partner does the same (one is one on both sides, some
telco switches count 1st CIC as 0, or even 2).
</pre>
<blockquote type="cite">
<pre wrap=""> CIC: 1
;Sangoma A102 port 1 [slot:4 bus:12 span:1] <wanpipe1>
</pre>
</blockquote>
<pre wrap="">
So - it should be 1st CIC
</pre>
<blockquote type="cite">
<pre wrap="">;First E1
sigchan=16
cicbeginswith=1
channel=1-15
</pre>
</blockquote>
<pre wrap="">
Here you say, that first available channel has logical number one, and
you try to make 1st call on CIC 1, so it looks good.
Maybe simply - you should try to disable one E1 link? Simply comment
out - the second E1 and see if it's not mis-cabling ?
If the same "no audio" happen on the only one digital link (one E1) -
it's in 99.999% - mis numbered CIC - have you access to any passive
"recording" equipment ?
Another Sangoma card with at least 2 ports could allow for listening
if audio is being put on any timeslot (CIC, timeslot, Bchannel - call
it as you wish).
--
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