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Cisco Bug: CSCun50430 - phone EW alerting is abnormal after making an incoming call

Last Modified

Sep 25, 2014

Products (4)

  • Cisco IP Phone 7800 Series
  • Cisco IP Phone 7841
  • Cisco IP Phone 7821
  • Cisco IP Phone 7861

Known Affected Releases


Description (partial)


CUCM version:
phone load:sip78xx.10-1-1SR1-3

1.configure the PSP parameters in the phone configuration 
2.while the phone EW alerting occurs, make an incoming to the phone ,then the alerting will disappear and the LED will always be flashing

RT phone is working fine

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