Gonna start a TAC case Thursday, but in the middle of a 400+ phone rollout, we just discovered that 469MHz (licensed) handheld radios cause the 7940's and 7960's to reboot when the radio is keyed within a couple of feet of the phone. A little experimenting says it happens in a range of about [405.5-486.5 MHz].
Is there some new 440MHz processor in some of these phones? It's not all 7940's or 7960's, but a good cross-section of them -- with little logic to serial/rev #'s.
We are experiencing the same issue. Random selection of phones. From a forum search I found this:
"Its likely that there is a floating ground in the ac circuit at this site or ground was lost on conduit. Get an electrician to check it out or get a ground checker from a hardware store (fairly cheap) and check out the circuit. If ground or conduit ground is lost then rf sheilding is lost and RF will induce HF voltage spikes on ac line."
I'm going to have this checked out. Dunno what else to do otherwise.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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Please find the attached HTML document, download and open it on your PC.
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[toc:faq]CUCM Database Replication is an area in which Cisco customers
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