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[asterisk-users] Asterisk dropping around 2% of ALL calls ever since we moved to EM_W signalling?

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sherwood.mcgowan at gm...
Guest

Posted: Thu May 15, 2008 11:11 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Alright guys and gals, I'm a little lost, I'm primarily a SIP/IAX based guy, and have ended up with a Zap installation. Everything was fine with our old provider when we were using PRI, but the new provider screwed up on provisioning and we've been temporarily stuck with a pair of EM Wink T's. Ever since then, we've been dropping 1-2% of all calls (in or out) and even more strange, when a call gets dropped, a phantom call was being generated on the incoming side, but only by Asterisk, the T providers (Qwest) say they have no records of those calls. So, my question to you is, has anyone else dealt with a EM Wink T before using Asterisk, if so did you experience problems similar to this, and finally, if so how did you deal with it? Here's an outline of our system specs: Dual 2.3Ghz Athlon 2GB RAM Asterisk 1.4.16 (Tried 1.4.19 as well) Zaptel 1.4.10 51 Zap phones connected via SEPARATE TE407 and channel bank 2 EM_W T1's connected via TE407 25 SIP Phones All calls are being recorded by the Monitor() application, there is no timeout on the dial command, I can find NOTHING in the system config that would instruct Asterisk to dump the call. I have spoken with the Qwest technicians who have pulled their call records, and they report that we "disconnected the call".... Any ideas, thoughts? I've reviewed the verbose (full setting, writing to file) and see that the far end channel disconnects, and then the near end goes into TIMEOUT. I've watched full debug output as well, from file, cannot find ANYTHING... Thanks for any help, Sherwood McGowan

astmattf at gmail.com
Guest

Posted: Thu May 15, 2008 11:22 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Hello,

I have quite a bit of experience with E&M Wink T1s, and I have seen
the problem you describe twice. In both cases it was either the
carrier's equipment or the wiring somewhere between the carrier shelf
and your equipment.

In one case it was water in the line that would seem to cause the
problem after it rained, and the other case was bad carrier equipment
at their shelf, once they moved it to another port on another shelf
the problem disappeared.

Good luck,

MATT---
On 5/15/08, Sherwood McGowan <sherwood.mcgowan at gmail.com> wrote:

Quote:

Alright guys and gals,
I'm a little lost, I'm primarily a SIP/IAX based guy, and have ended up
with a Zap installation. Everything was fine with our old provider when
we were using PRI, but the new provider screwed up on provisioning and
we've been temporarily stuck with a pair of EM Wink T's. Ever since
then, we've been dropping 1-2% of all calls (in or out) and even more
strange, when a call gets dropped, a phantom call was being generated on
the incoming side, but only by Asterisk, the T providers (Qwest) say
they have no records of those calls.

So, my question to you is, has anyone else dealt with a EM Wink T before
using Asterisk, if so did you experience problems similar to this, and
finally, if so how did you deal with it?

Here's an outline of our system specs:

Dual 2.3Ghz Athlon
2GB RAM
Asterisk 1.4.16 (Tried 1.4.19 as well)
Zaptel 1.4.10

51 Zap phones connected via SEPARATE TE407 and channel bank
2 EM_W T1's connected via TE407
25 SIP Phones

All calls are being recorded by the Monitor() application, there is no
timeout on the dial command, I can find NOTHING in the system config
that would instruct Asterisk to dump the call.
I have spoken with the Qwest technicians who have pulled their call
records, and they report that we "disconnected the call"....

Any ideas, thoughts? I've reviewed the verbose (full setting, writing to
file) and see that the far end channel disconnects, and then the near
end goes into TIMEOUT. I've watched full debug output as well, from
file, cannot find ANYTHING...

Thanks for any help,
Sherwood McGowan

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sherwood.mcgowan at gm...
Guest

Posted: Thu May 15, 2008 11:42 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Matt Florell wrote:

Quote:

Hello,

I have quite a bit of experience with E&M Wink T1s, and I have seen
the problem you describe twice. In both cases it was either the
carrier's equipment or the wiring somewhere between the carrier shelf
and your equipment.

In one case it was water in the line that would seem to cause the
problem after it rained, and the other case was bad carrier equipment
at their shelf, once they moved it to another port on another shelf
the problem disappeared.

Good luck,

MATT---

On 5/15/08, Sherwood McGowan <sherwood.mcgowan at gmail.com> wrote:

Quote:

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Thanks for the info, I'll see what I can figure out. I'll triple check
the wiring here on our end, and try to figure out how I can convince
Qwest to try putting us on another port on a different shelf

Cheers,
Sherwood

dpobanz at hastingsuti...
Guest

Posted: Thu May 15, 2008 11:59 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

On Thursday, May 15, 2008 11:11 AM - Sherwood McGowan said

...

Quote:

we've been temporarily stuck with a pair of EM Wink T's. Ever since
then, we've been dropping 1-2% of all calls (in or out) and even more
strange, when a call gets dropped, a phantom call was being
generated on
the incoming side, but only by Asterisk, the T providers (Qwest) say
they have no records of those calls.

...

I don't know whether this could be related or not but are you set to
loop timing on your incoming phone company T1 port? I have seen timing
issues create some strange issues.

By the way, we are using incoming EM wink trunks delivered over a T1 and
are not having any issues. We are using Asterisk 1.4.18 with Zaptel
1.4.10.

Don Pobanz

--
MailDefender Message Security: Click below to verify authenticity
http://www.exchangedefender.com/verify.asp?id=m4FH3AwE015747&from=dpobanz at hastingsutilities.com

stotaro at totarotechn...
Guest

Posted: Thu May 15, 2008 12:33 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

On Thu, May 15, 2008 at 12:59 PM, Don Pobanz
<dpobanz at hastingsutilities.com> wrote:

Quote:

On Thursday, May 15, 2008 11:11 AM - Sherwood McGowan said

...

Quote:

sherwood.mcgowan at gm...
Guest

Posted: Thu May 15, 2008 12:43 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Matt Florell wrote:

Quote:

Hello,

I have quite a bit of experience with E&M Wink T1s, and I have seen
the problem you describe twice. In both cases it was either the
carrier's equipment or the wiring somewhere between the carrier shelf
and your equipment.

In one case it was water in the line that would seem to cause the
problem after it rained, and the other case was bad carrier equipment
at their shelf, once they moved it to another port on another shelf
the problem disappeared.

Good luck,

MATT---

On 5/15/08, Sherwood McGowan <sherwood.mcgowan at gmail.com> wrote:

Quote:

I'll check that out, as far as I know I'm not, although our Rhino
channel bank uses loop timing. Another thing I'm worried about is my
zttest results have been dipping VERY low, sometimes down to 95% (worst
hit, not avg)....but this server should be able to handle this
EASILY....we didn't have the accuracy problems when on PRI, and nothing
has changed other than that. Quick note, I've checked and we're not
missing interrupts, and I've gone CRAZY with checking all our Zap
settings with Digium and with Qwest, to no avail.

I'll check the wiring here in the office tonight to make sure the guy I
inherited this from didn't make a mistake somewhere, and act on anything
else you guys might have.

Thanks so far, you're all helping me at least think of new things to
check out. I've barely worked with Zap, and mostly only on the local
side with channel banks.

Sherwood McGowan

sherwood.mcgowan at gm...
Guest

Posted: Thu May 15, 2008 12:45 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Steve Totaro wrote:

Quote:

On Thu, May 15, 2008 at 12:59 PM, Don Pobanz
<dpobanz at hastingsutilities.com> wrote:

Quote:

On Thursday, May 15, 2008 11:11 AM - Sherwood McGowan said

...

Quote:

How did your dialplan change. When do the hangups occur? Is there a pattern?

I have done a few E&M wink setups with no issues other than getting
the configs and dialplan right.

Personally, I would ream your provider rep and demand that your
situation be escalated to the top. If they don't agree, go over their
head, I always get an escalation form with contacts for each
escalation level. Obviously, when thing are straightened out, make it
a point be very thankful to everyone and CC them with what a great job
they did.

Thanks,
Steve Totaro

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Steve,
Thanks for the input. The dialplan did not change when this symptom
started happening. There is no pattern other than we drop 1 or 2 calls
at a time, I've reviewed the dialplan executions (verbose level 3 output
to log file) and the call is executing as normal but then the far end
(trunk side) just disconnects, and we then go to timeout (which it should).

I've tried to be cool with our reps so far, but it IS getting a little
ridiculous, sounds like I may have to go that route.

Sherwood McGowan

Alex.Lopez at OpSys.com
Guest

Posted: Thu May 15, 2008 3:09 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

What does the timing look like in the zapata.conf file??? E&M is very sensitive to timing slips.... Is it B8ZS, ESF, D4, AMI???? Alex Snip

sherwood.mcgowan at gm...
Guest

Posted: Thu May 15, 2008 3:30 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Alexander Lopez wrote:

Quote:

What does the timing look like in the zapata.conf file???
E&M is very sensitive to timing slips....

Is it B8ZS, ESF, D4, AMI????

Alex

Snip

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/etc/zaptel.conf
*snip*
span=1,1,0,esf,b8zs
span=2,2,0,esf,b8zs
e&m=1-48
*snip*

eric at fnords.org
Guest

Posted: Thu May 15, 2008 4:25 pm Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Make SURE you are not using callprogress=yes or busydetect=yes (they
default to no). These options are commonly known in the Asterisk world
as "randomlydisconnectmycalls=yes".

Sherwood McGowan wrote:

Quote:

Steve Totaro wrote:

Quote:

On Thu, May 15, 2008 at 12:59 PM, Don Pobanz
<dpobanz at hastingsutilities.com> wrote:

Quote:

On Thursday, May 15, 2008 11:11 AM - Sherwood McGowan said

...

Quote:

--
Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS,
T-1, PRI, Frame Relay, Linux, and network design. Based near
Birmingham, AL. Now accepting clients worldwide.

sherwood.mcgowan at gm...
Guest

Posted: Fri May 16, 2008 10:20 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Eric Wieling wrote:

Quote:

Steve Totaro wrote:

Quote:

On Thu, May 15, 2008 at 12:59 PM, Don Pobanz
<dpobanz at hastingsutilities.com> wrote:

Quote:

On Thursday, May 15, 2008 11:11 AM - Sherwood McGowan said

...

Quote:

Thanks for the tip. I had those enabled, but not for the EM_W trunks,
only for my POTS end. After speaking with Digium I have disabled them
completely, and I'm waiting to see the results from today's set of calls.

Thanks to everyone so far for the suggestions, it's good to know that
even after all these years (and an absence from the mailing lists) I
still find the community just as helpful and kind as before Smile

Sherwood McGowan

sherwood.mcgowan at gm...
Guest

Posted: Tue May 20, 2008 11:09 am Post subject: [asterisk-users] Asterisk dropping around 2% of ALL calls ev

Thank you all for your input. Currently, nothing has improved the dropped call rate by more than .2%, leaving me at 1.8% dropped calls still..Luckily, our switch back to PRI is due anytime in the next day or so.. Sherwood McGowan

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