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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Do you have Dedicated MWI ports? It looks like you don’t.
As a rule of thumb, you should dedicate 25% of your ports to MWI, Meaning you
do not send calls to these ports on the auto attendant Hunt Group. On the
Unity, you should also set them to MWI only. This Should fix your problem. Keep
in mind that by doing this you are effectively reducing the amount of port that
will answer and depending on you port usage, you could be in need of adding
ports. Set up 4 ports for mwi and 12 for Voice calls, If 12 is not enough, your
next step should be to add ports, no to reduce the amount of MWI dedicated
ports.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hope this Helps;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jorge Rodríguez Aguila<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>CCNA,CCVP<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Senior Network Consultant<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Netxar Technologies<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>jorge.rodriguez@netxar.com<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Office 787-765-0058<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>PCS 787-688-8530<o:p></o:p></span></p>
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color:#1F497D'><img width=101 height=34 id="Picture_x0020_1"
src="cid:image001.png@01C88434.9CDB9060" alt=netxar></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net]
<b>On Behalf Of </b>Todd Franklin<br>
<b>Sent:</b> Wednesday, March 12, 2008 9:39 AM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] MWI Collisions<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Yesterday we had a failure with
the system whereby calls coming in on the PRI were not happening, but we could
call out on the PRI.<br>
The entire event lasted maybe 15 minutes.<br>
When I looked at the Unity event viewer, I see many THOUSANDS of these during
that timeframe (on average it looks like 60 every second were logged):<br>
<br>
"Cisco Unity-CM TSP device 20 (Cisco Unity port 16): An attempt to turn ON
the message waiting indicator (MWI) for extension 1212 failed because a
collision occurred with an incoming call on the same port. <br>
<br>
The MWI request will be retried. But to prevent collisions, we recommend that
ports setting MWIs be isolated from ports handling incoming calls. If the MWI
status remains unchanged for an extended period of time or if there are many of
these warnings from Cisco Unity in a short period of time, there may be an MWI
misconfiguration or another problem." <br>
<br>
---<br>
<br>
Any ideas anyone? Unity looks quiet today, but this was a bizarre failure
right out of the blue. If I need to do something to avoid a repeat of
this, I'm more than willing!!<br>
<br>
Thanks!<o:p></o:p></p>
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