Preview Tool

Cisco Bug: CSCtc83493 - 3825 crash at EncodeSequence_SingleBitMask - Bus error at PC 0x0

Last Modified

Feb 15, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Router configured as SRST crashes repeatedly with message Bus error at PC 0x0, address 0x0.
Crashes occur at a particular time everyday.


Removing following commands seem to halt the crashes -
voice service voip
 qsig decode

under serial interfaces:
isdn supp-service name calling
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.