[cisco-voip] CCM 5.1 w/ Exchange 2007 UM

[Jeff Mottishaw]

I have configured a SIP trunk as described by numerous articles, as
well as people on this list; however, I am seeing this warning in my
event logs every 15 minutes. I'm wondering if it is a configuration
issue, if it can be safely ignored, etc. Although we only have a few
users on Exchange 2007 UM, (the rest on Unity Connection) everything
appears to be running smoothly.

Event Type:	Warning
Event Source:	MSExchange Unified Messaging
Event Category:	UMService
Event ID:	1088
Date:		11/15/2007
Time:		9:15:47 AM
User:		N/A
Computer:	NAV-MX0
Description:
The IP gateway or IP-PBX did not respond to a PING request from the
Unified Messaging server. The error code that was returned is "405"
and the error text is "Method Not Allowed".

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.