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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Client of ours came across this issue for a batch of phones last
year. Performed a factory reset, moved the phones off to a different switch
port, moved them to a completely different switch, upgraded the firmware,
swapped out the patch cables, checked call statistics for lost packets….. As
for codec mismatches or unregistration events, CCM traces didn’t show any codec
mismatches (no transcoders invoked) or gateway unregistration events or
d-channel flaps during the time the problem occurred. SCCP and Q931 signaling
showed the disconnect was issued from the end user, not PSTN. Eventually opened
a TAC case and was told it was due to hardware failure. Client RMA’ed the IP
phones and never encountered the issue again.<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 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 style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Daniel<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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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
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>CarlosOrtiz@bayviewfinancial.com<br>
<b>Sent:</b> Monday, March 17, 2008 3:00 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] Temp Fail message on phones<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Started seeing
this error message last week at a remote location connected via MPLS on several
phones intermittently. People are actually on a phone call and get
disconnected when the message appears. After searching the archives it looks
like there are multiple possibilites for the cause of this message: Packet
loss, DSP issues, Codec mismatch, MGCP gateways unregistering, etc.</span> <br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Anyone have a
clue what the likely cause would be when you have an H.323 gateway and calls
are already connected but get dropped in the middle?</span> <br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Carlos</span><o:p></o:p></p>
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