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Cisco Bug: CSCtb85098 - RT: Lkem gets no power after downgraded with host phone

Last Modified

Jul 28, 2010

Products (1)

  • Cisco Unified IP Phones 9900 Series

Known Affected Releases

9.0(1) 9.0(2)

Description (partial)


lkem is not powered after downgraded with host phone.


1) RT phone 9951 registers to CUCM with 2 lkems connected in load sip9951.9-0-1TLT4-2dev, powered by POE.
2) Set phone load to be sip9951.9-0-1TLT3-5dev through CUCM device page and reset the phone.
3) Phone downgrades to 3-5dev and starts up successfully. The 2nd lkem keeps off after phone finishes starting up. Check Application -> accessory, the 2nd lkem is not detected.
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