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Cisco Bug: CSCup82037 - SPA5x5 SCA Line seizure - phone reboot issue

Last Modified

Dec 19, 2014

Products (11)

  • Cisco Small Business SPA500 Series IP Phones
  • Cisco SPA301 1 Line IP Phone
  • Cisco SPA512G 1-Line GigE IP Phone
  • Cisco SPA504G 4-Line IP Phone
  • Cisco SPA514G 4-Line GigE IP Phone
  • Cisco SPA501G 8-Line IP Phone
  • Cisco SPA502G 1-Line IP Phone
  • Cisco SPA508G 8-Line IP Phone
  • Cisco SPA303 3 Line IP Phone
  • Cisco SPA525G 5-line IP Phone with Color Display
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Known Affected Releases


Description (partial)

SPA5x5 SCA Line seizure - phone reboot issue
1. Phone goes off-hook. SUBSCRIBE (line-seize) sent, switch sends NOTIFY with subscription-state:active, expiry=15s
2. Rapidly toggle on/off-hook for 3s. Phone eventually sends a SUBSCRIBEs which is answered with 480 responses.
3. At this point 'NoLine' is shown on screen.
4. Phone UI becomes unresponsive, phone no longer responds to SIP messages, etc. Syslog shows a KERN.ERR message and once again 'request reboot type=4 reason=System 4(8000)'

SPA5x5 running 7.5.6
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Bug Details Include

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