Proxy side Media negotiation failed – Polycom VVX Call transfer failure

  Environment: Skype for Business Enterprise Edition Trunk Configuration Identity : PSTN:GatewayIP OutboundTranslationRulesList : {} SipResponseCodeTranslationRulesList : {} OutboundCallingNumberTranslationRulesList : {} PstnUsages : {} Description : ConcentratedTopology : True EnableBypass : True EnableMobileTrunkSupport : False EnableReferSupport : True EnableSessionTimer : False EnableSignalBoost : False MaxEarlyDialogs : 20 RemovePlusFromUri : False RTCPActiveCalls : True RTCPCallsOnHold : […]

Call drop on transfer – RTP Broken Connection

  Environment: Skype for Business Enterprise Edition Trunk Configuration Identity : PSTN:GatewayIP OutboundTranslationRulesList : {} SipResponseCodeTranslationRulesList : {} OutboundCallingNumberTranslationRulesList : {} PstnUsages : {} Description : ConcentratedTopology : True EnableBypass : False EnableMobileTrunkSupport : False EnableReferSupport : False EnableSessionTimer : True EnableSignalBoost : False MaxEarlyDialogs : 20 RemovePlusFromUri : False RTCPActiveCalls : False RTCPCallsOnHold : […]

Call drop after 5 min Conference Sonus/Toshiba

Environment: Skype for Business Standard Edition Sonus 1000 Toshiba PBX Toshiba <-> Sonus <-> Skype for Business Issue: When on a SFB Conference call  and a user dials in from Toshiba PBX via Sonus to the SFB Conference, after exactly 5 minutes the call would hang up. Resolution: Here were the steps to troubleshoot the […]