When you hit the messages button on an IP phone, if the MWI light is on it will choose that line to dial out on. If there are multiple MWI lights lit, I'm not sure what the rule is on picking a line to dial out on. If no MWIs are lit, it will normally pick your first line to dial out on.
We have run into similiar issues with the Voicemail button and multiple lines (typically in a Boss-Secretary Combination). Here is what Cisco has told me is happening:
When a user presses the "Messages" button on a 79xx phone, the telephone firmware scans through all of its defined DNs, looking for a DN with the message icon set. (This normally appears as an envelope symbol next to the line number on the display.) If any of the DN appearances on the phone have the message icon set, the phone will then call the Voice Mail machine using the last line with a message. (If no message icons are set, the phone will call using the first DN appearance.)
There are plans to change the way that this works but nothing committed as far as I know. You might want to contact your account team to get status on the change. You should reference CSCds51126.
In addition they have added great new features and enhancemnts in 3.3 for boss-secretary that should help.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...