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<p class=MsoNormal><tt><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;color:black'>Hello, </span></font></tt><tt><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p></o:p></span></font></tt></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>Here are my observations / Report on
what I see about the new Digium <br>
TE110P Card. </span></font><o:p></o:p></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- Recently we switched to the new TE110P
card in replacement of the old <br>
E110P Interface. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- Unlike previous times with the old
E110P, this time we are seeing <br>
some Random Problems with the new Digium card as describe in the following <br>
report: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- We have two sites where the problem
show up involving the following <br>
equipment: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> 1.-
Asterisk/Digium to Nortel Option-11 Switch with 620 users <br>
and <br>
2.- Asterisk / Digium to Cirilium Euro-ISDN-PRI
Analog/Digital <br>
Gateway/Call Manager <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- In both cases, after Power Up, we
observe that PCM signal comes up <br>
very <br>
clean and Layer 2 and 3 start-up nicely as expected with the following <br>
characteristics: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> Customer
Site
(Nortel)
Digium <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> L1 Clock=
Slave
Master <br>
CRC = Enabled both sides <br>
HDB3 = Enabled both sides <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> L2 =
User
Network <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> L3 = Euro
ISDN=PRI-E1 both sides....Channels: 0=Sync 1-15 <br>
Bearer <br>
16= D channel 17-31= Bearer <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- We notice that Layer 1 (L1) stays up
very clean for several hours <br>
before <br>
the proble shows up. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- Layer 2 initializes correctly with a
sequence like this: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> SABME--> <br>
<---UA <br>
RR---> <br>
<---RR <br>
RR---> <br>
<---RR <br>
RR---> <br>
<---RR <br>
And stays like that for a long time. Actually we don't see it to fail <br>
at all <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>- At some point, we see that
unexpectedly, Digium sends a Burst of CRC <br>
errors and then in returns to normal. This happens for about 2 seconds <br>
and <br>
it is short enouth to the point where Layers 2 and 3 stay up without <br>
noticing the media failure (Note we are using only certified Factory <br>
Made <br>
Cables...So wiring errors are discarded) <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>If we restart manually our Euro-ISDN
interface, Layer 3 starts with a <br>
standard RESTART / RESTART ACK Sequence including all 30 BEARER <br>
channels <br>
exchanged between both devices.. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>HOWEVER, at some point (usually after a
few hours after restart), we <br>
see the <br>
following two phenomenon: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>1.- All of a sudden, at Level 1, Digium
sends a Burst of CRC and Frame <br>
Check <br>
Sequences (FCS) errors for about 2-3 seconds towards the Customer <br>
Premises. <br>
Please notice that Layer 2 ( In state RR >,,< RR) stay Up and L3 stay <br>
also <br>
Up. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>2.- In several other occasions (about
50% of the time), we notice that <br>
Digium, Unexpectedly Starts sending L3 Restarts (Restart-->
<--Restart <br>
Ack) <br>
for all 30 channels and at the Same time, Layer 1 sends a burst of <br>
Errors <br>
(CRC's and FCS's). This is the most worring situation because it <br>
trashes all <br>
calls. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>At the same time, the /var/log/asterisk/messages
log, reports: <br>
Jun 24 04:44:58 NOTICE[7449]: PRI got event: HDLC Abort (6) on Primary <br>
D-channel of span 1 <br>
Jun 24 04:44:58 DEBUG[7449]: Got event HDLC Abort (6) on D-channel for <br>
span <br>
1 <br>
Jun 24 04:56:19 NOTICE[7449]: PRI got event: HDLC Bad FCS (8) on <br>
Primary <br>
D-channel of span 1 <br>
Jun 24 04:56:19 DEBUG[7449]: Got event HDLC Bad FCS (8) on D-channel <br>
for <br>
span 1 <br>
Jun 24 05:08:39 NOTICE[7449]: PRI got event: HDLC Bad FCS (8) on <br>
Primary <br>
D-channel of span 1 <br>
Jun 24 05:08:39 DEBUG[7449]: Got event HDLC Bad FCS (8) on D-channel <br>
for <br>
span 1 <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>3.- Also, in about 20% of the cases, we
have observed that sometimes <br>
(about <br>
every 40 minutes), Digium totally removes for about 2-3 seconds PCM <br>
signal <br>
apparently shortly after Layer 3 collapses and restarts with the <br>
following <br>
information: <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>Jun 24 07:21:11
VERBOSE[301]: -- B-channel 0/17 successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/1
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/2
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/3
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/4
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/5
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/6
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/7
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/8
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/9
successfully <br>
restarted on <br>
span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/10
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/11
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/12
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/13
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/14
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/15
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/18
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/19
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/20
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/21
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/22
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/23
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:11 VERBOSE[301]: -- B-channel 0/24
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/25
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/26
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/27
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/28
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/29
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/30
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:21:12 VERBOSE[301]: -- B-channel 0/31
successfully <br>
restarted <br>
on span 1 <br>
Jun 24 07:23:33 NOTICE[301]: PRI got event: HDLC Abort (6) on Primary <br>
D-channel of span 1 <br>
Jun 24 07:56:03 NOTICE[301]: PRI got event: HDLC Abort (6) on Primary <br>
D-channel of span 1 <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>In all cases the Link recovers but
active calls drop. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>I am using Asterisk-1.0.7, zaptel-1.0.7
, zapata-1.0.1 and libpri-1.0.7 <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>If you think, you need to access my
Asterisk server, I can give you my server's login information. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>I would appreciate for help. <o:p></o:p></span></font></p>
<p><font size=2 color=black face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>Regards </span></font><font color=black><span
style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Rockwell><span style='font-size:10.0pt;
font-family:Rockwell'>Nahid</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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