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Cisco Bug: CSCtc70490 - Call disconnects seen due to %C5510-1-NO_RING_DESCRIPTORS error

Last Modified

Jan 27, 2017

Products (1)

  • Cisco 2800 Series Integrated Services Routers

Known Affected Releases

12.4(15)T10 12.4(15)T11

Description (partial)

Symptoms: A Cisco IOS VoIP gateway may intermittently experience dropped 
  calls and loss of audio.
  Conditions: This symptom is observed when the DSP used in the call fails to 
  respond. When this occurs, the following error messages may be displayed:
  Sep  7 02:09:14.171 PDT: %C5510-1-C5510_CHPI_ERROR: cHPI error for pa_bay 1 
  pump 1 dsp 9.
  Sep  7 02:09:15.555 PDT: %C5510-1-NO_RING_DESCRIPTORS: No more ring 
  descriptors available on slot 1 dsp 9.
  Sep  7 02:09:20.555 PDT: %C5510-1-NO_RING_DESCRIPTORS: No more ring 
  descriptors available on slot 1 dsp 9.
  This symptom is observed only in DSPware 9.4.811. To determine the DSPware 
  version residing on the gateway, enter the <CmdBold>show voice dsp group 
  all<noCmdBold> command in global configuration mode.
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