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Upcoming scheduled Yahoo / PIC maintenance window - November 17, 2009

Posted Wednesday, November 11, 2009 3:28 PM by Scott Oseychik
Summary: Yahoo will be performing scheduled maintenance on their OCS Gateway Servers during the following maintenance window: Confirmed Maintenance Start Date: Tuesday, November 17, 2009, 5:00pm Pacific Time Projected Maintenance End Date: Tuesday, November Read More...
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Upcoming scheduled AOL / PIC maintenance window - October 8, 2009

Posted Wednesday, October 07, 2009 7:11 PM by Scott Oseychik
Summary: America Online will be performing scheduled maintenance on their SIP Access Gateways during the following maintenance window: Confirmed Maintenance Start Date: 10/08/2009 04:00 ET (24 Hour Time) Projected Maintenance End Date: 10/08/2009 06:00 Read More...
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Temporary Yahoo! PIC Maintenance: September 24, 2009 – September 25, 2009

Posted Thursday, September 24, 2009 11:37 PM by Scott Oseychik
Summary: Yahoo! will be performing maintenance that will affect their OCS gateways. The outage is scheduled to be brief, but as a precautionary measure, the following maintenance window has been declared: Maintenance Start Date/Time: 9/24/2009, 10:00pm Read More...
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Additional troubleshooting step when encountering PIC issues w/AOL

Posted Friday, July 24, 2009 11:48 AM by Scott Oseychik
Summary: America Online ("AOL") uses Global Server Load Balancing ("GSLB") to maintain their SIP gateway farm. Their configuration uses sub VIPs, one for each of their two datacenters. Whenever AOL performs maintenance (new code, hardware, etc.), they Read More...
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Upcoming scheduled AOL / PIC maintenance window - July 15, 2009 - July 16, 2009

Posted Wednesday, July 15, 2009 12:52 PM by Scott Oseychik
Summary: America Online will be performing scheduled maintenance on their SIP Access Gateways during the following maintenance window: Confirmed Maintenance Start Date : 07/15/2009 22:00 ET (24 Hour Time) Projected Maintenance End Date : 07/16/2009 00:00 Read More...
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Federation and/or PIC may fail against partners using 2048-bit signed Root CAs

Posted Tuesday, July 14, 2009 4:18 PM by Scott Oseychik
Summary: You may find that OCS 2007 / OCS 2007 R2's Federation and/or PIC fails against partners who do not support Entrust root certificates signed using a 2048-bit public key. For example, the "broken" certificate chain may resemble the following: Edge Read More...
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Attachment(s): 2048-to-1024-Cross-Cert.txt

Tweaking OCS for PIC with Windows Live/MSN Messenger

Posted Thursday, June 18, 2009 10:59 AM by Scott Oseychik
Summary: Windows Live/MSN Messenger defines both Minimum and Maximum values for Presence subscriptions. If the SUBSCRIBE method uses a value out of this range, it may result in a SIP failure. The minimum value is 3600 seconds and the MAX value is 13000 Read More...
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RESOLVED - Technical inaccuracy in KB 897567 (specific to PIC, LCS/OCS, and Windows Live/MSN Messenger)

Posted Saturday, June 13, 2009 3:13 PM by Scott Oseychik
Update: As of June 25, 2009, the KB article 897567 has been updated, and now is accurate. Summary: As of June 13, 2009, the content of the KB article 897567 contains an inaccuracy. The last octet for the second MSN IP address was improperly transposed. Read More...
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Upcoming scheduled AOL / PIC maintenance window - June 4, 2009

Posted Wednesday, June 03, 2009 3:14 PM by Scott Oseychik
Summary: America Online will be performing scheduled maintenance on their SIP Access Gateways during the following maintenance window: Confirmed Maintenance Start Date: 06/04/2009 04:00 ET (24 Hour Time) Projected Maintenance End Date: 06/04/2009 06:00 Read More...
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Failure to establish PIC connectivity to MSN

Posted Tuesday, May 12, 2009 1:28 PM by Scott Oseychik
Symptoms: LCS 2005, OCS 2007, and/or OCS 2007 R2 fail to establish PIC connectivity to MSN after changes were made to the MSN infrastructure on May 9, 2009 Data: In the logs, you'll see the following data: TL_ERROR(TF_CONNECTION) [1]08B4.146C::05/12/2009-15:32:27.115.00004bcf Read More...
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RESOLVED - Federation with Microsoft is down (aka: "It's not you, it's me.")

Posted Tuesday, April 07, 2009 11:18 AM by Scott Oseychik
We're actively debugging this, and I'll update this post once we have this resolved. UPDATE (6pm, Eastern): We have identified the issue, and will be making changes this evening to rectify the issue. Things should be resolved by tomorrow morning. UPDATE Read More...
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RESOLVED - OCS 2007 R2 PIC fails against AOL

Posted Friday, April 03, 2009 2:14 PM by Scott Oseychik
Issue: Microsoft Office Communicator 2007 R2 in conjunction with Office Communications Server 2007 R2 would intermittently fail to communicate with AOL AIM clients via PIC. Note that this would only reproduce if your OCS 2007 R2 Edge role is running Windows Read More...
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Additional Windows Live Messenger PIC/Federation IP Addresses

Posted Monday, March 09, 2009 1:04 PM by Scott Oseychik
Notification In an effort to provide enhanced capacity and service reliance, Windows Live Messenger will soon be adding additional IP addresses used for PIC/Federation traffic. Some organizations have chosen to restrict this type of traffic to specific Read More...
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Upcoming scheduled AOL / PIC maintenance window

Posted Friday, January 30, 2009 10:10 AM by Scott Oseychik
Summary: America Online will be performing scheduled maintenance on their SIP Access Gateways during the following maintenance window: Confirmed Maintenance Start time: 2009-02-03 04:00 ET Projected Maintenance End time: 2009-02-03 06:00 ET There may Read More...
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PIC stops functioning after installing/renewing your certificate

Posted Tuesday, December 30, 2008 9:00 AM by Scott Oseychik
Summary: After installing or renewing your DigiCert public certificate for your OCS 2007 Edge server(s), PIC stops functioning properly (however, Remote Access still works correctly). Cause: This issue occurs if the certificate issued uses the Certificate Read More...
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