[cisco-voip] IOS 15 Bug - CSCtf08864

[H, Tim]

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

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