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Cisco Bug: CSCuo08995 - Callers may hear silence when there are large number of queued calls

Last Modified

Jul 03, 2017

Products (7)

  • Cisco Unified Communications Manager (CallManager)
  • Cisco Intercompany Media Engine
  • Cisco Business Edition 5000 Version 9.1
  • Cisco Unity Connection Version 9.1
  • Cisco Business Edition 6000 Version 9.1
  • Cisco Unified Communications Manager Version 9.1
  • Cisco Unified Communications Manager Session Management Edition

Known Affected Releases


Description (partial)

MoH callers hear silence or some initial audio and then silence.
A syslog message "IpVms: No free USR buffers. ..."

Very high volume of MoH callers using initial/greeting announcement and possibly many MoH Audio sources.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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