{
  "Signaling": {
    "strictCallFlows": true,
    "InviteErrorResponsesToTriggerCSFB": "3XX,4XX,5XX,6XX",
    "SupportPEarlyMediaHeader": true,
    "RingbackTimerSeconds": 60,
    "RingingTimerSeconds": 60,
    "SendPreferredServiceInInvite": true,
    "WaitForRingingTimerMTSeconds": 25,
    "DefaultAuthAlgorithm": "AKAv1-MD5",
    "TriggerCSFBOnSDPError": true,
    "Preconditions": "Supported",
    "AdditionalContactParams": {
      "REGISTER,INVITE,INVITE:*": "+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting"
    },
    "AlwaysSendSessionProgress": true,
    "UseFakeSAsForDeregistration": true,
    "UseIPSec": true
  },
  "ConferenceCalling": {
    "conferenceServer": "sip:mmtel@conf-factory.ims.mnc005.mcc284.3gppnetwork.org",
    "SendConferenceSubscribeInNewDialog": true,
    "AlwaysSubscribeToConferenceEvents": true
  },
  "Media": {
    "PreferredAMRWBMode": 8,
    "EnableBandwidthSpecifiers": true,
    "RingbackTone": "CEPT",
    "IncludeSDPMaxRed": true
  },
  "Voice": {
    "EnableVolteByDefault": true,
    "E911OverCSIfNoIMSReg": true
  }
}