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Cisco Bug: CSCsz73630 - CUCM SIP trunk error 500 if DA is returning Block PotentialMatchesExist

Last Modified

Jul 06, 2017

Products (3)

  • Cisco Unified Communications Manager (CallManager)
  • Cisco Unity Connection Version 7.1
  • Cisco Unified Communications Manager Version 7.1

Known Affected Releases


Description (partial)


CUCM disconnects the call from secure SIP trunk if DA is returning PotentialMatchesExist with SIP/2.0 500 Internal Server Error


The diaplan  has wildcard !
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