[cisco-voip] IOS 15 Bug - CSCtf08864

[Dennis Heim]

Providers rarely accommodate one off requests.. so probably far chance in you know where for them changing their signaling to accommodate an IOS bug.

Dennis Heim
Network Voice Engineer
CDW  Advanced Technology Services
11711 N. Meridian Street, Suite 225
Carmel, IN  46032

317.569.4255 Office
317.569.4201 Fax
317.694.6070 Cell
dennis.heim at cdw.com<mailto:dennis.heim at cdw.com>
www.berbee.com<http://www.berbee.com/>

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Thursday, April 29, 2010 9:15 AM
To: Tim H
Cc: cisco-voip voyp list
Subject: Re: [cisco-voip] IOS 15 Bug - CSCtf08864

I know if I asked my service provider for option I they would look at me like an alien.

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Cooking with unix is easy. You just sed it and forget it.
                              - LFJ (with apologies to Mr. Popeil)


----- Original Message -----
From: "Tim H" <TimH at trstone.com>
To: "cisco-voip voyp list" <cisco-voip at puck.nether.net>
Sent: Thursday, April 29, 2010 8:19:01 AM GMT -05:00 US/Canada Eastern
Subject: Re: [cisco-voip] IOS 15 Bug - CSCtf08864


Looks like they have some valid workarounds now:
Workaround:
===========
( I) Ask the service provider to send flags between frames instead of idle
marks. Idle marks [11111111] may be sent to fill the gap between useful
frames. Alternatively, a series of flags [01111110] may be transmitted to
fill gaps between frames instead of transmitting idle marks [11111111].
Continuous transmission of signals is required to keep both the
transmitting and receiving nodes synchronized.

(II) If (I) above is not possible an IOS image with a candidate fix is
available. The candidate fix has a high confidence level of resolving the
PRI voice call issues described above, and has proven to be successful in
several field deployments complaining of similar call problems. Please
contact the Cisco Technical Assistance Center (TAC) for details on
obtaining the candidate fix.

Tim

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Bernhard Albler
Sent: Tuesday, April 27, 2010 12:51 PM
To: cisco-voip voyp list
Subject: Re: [cisco-voip] IOS 15 Bug - CSCtf08864

Hi guys,

for info:
I have been hitting the issue at one of our customer sites. Actually did switch back to a 28xx for now. The good news: we now have a fix (via a test release), that seems to fix the whole mess. So if you are hitting this get in contact with TAC, they should be able to help you.


regards
bernhard

------------------------------------------
Bernhard Albler, CCIE #23747 (Voice), NTS AG
Tel.: +43 (1) 867 6776 -516, email: balbler at nts.at<mailto:balbler at nts.at>


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