Preview Tool

Cisco Bug: CSCun36367 - SPA525G: Phone lockup with 'Ringing' on LCD display

Last Modified

Apr 18, 2014

Products (1)

  • Cisco Small Business IP Phones

Known Affected Releases


Description (partial)

SPA525G: Phone lockup with 'Ringing' on LCD display

SPA525G running 7.5.5 / SIP

1.       Enable STUN on UUT. (<STUN Enable > = Yes, <STUN Server> = x.x.x.x,< NAT Mapping Enable > = Yes)
2.       RU1 calls RU2 and connect the call.
3.       RU2 holds RU1 and call UUT.
4.       UUT answers the call.
5.       RU2 transfers RU1 to UUT.
6.       End the call between RU1 and UUT. UUT is in idle status.
7.       Make a new call on UUT.

Result: If SPA525G is UUT, it will always display 'Ringing'. An outbound call cannot be made anymore, and we need to power cycle or receive an incoming call to make the phone come back to normal status.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.