{
  "Media": {
    "InactivityTimerRTPSeconds": 15,
    "EnforceEarlyMediaDirection": true,
    "IncludeSDPModeChangeCapability": true,
    "EnableBandwidthSpecifiers": true
  },
  "Signaling": {
    "IgnoreRegNotificationContactExpires": true,
    "AdditionalContactParams": {
      "REGISTER,INVITE,INVITE:*": "+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting"
    },
    "DefaultAuthAlgorithm": "AKAv1-MD5",
    "TriggerCSFBOnSDPError": true,
    "ussdEnabled": true,
    "SupportPEarlyMediaHeader": true,
    "EarlyMediaNeedsHeader": true,
    "WaitForRingingTimerMOSeconds": 21,
    "AdditionalHeaders": {
      "INVITE,INVITE:*": "Feature-Caps: *;+g.3gpp.srvcc-alerting"
    },
    "AlwaysUnsubscribeFromRegEvents": false,
    "SubscriptionTerminatedMeansRegistrationTerminated": true,
    "InviteErrorResponsesToTriggerCSFB": "3XX,5XX,6XX",
    "DropRegistrationOnSRVCC": true,
    "MaxUdpMessageSize": 5000,
    "AlwaysSendSessionProgress": true,
    "strictCallFlows": true,
    "RingbackTimerSeconds": 130,
    "AlwaysAddPrivacyHeader": true,
    "WaitForRingingTimerMTSeconds": 21,
    "RequirePreconditionsWhenMandatory": false,
    "Preconditions": "Supported",
    "UseIPSec": true,
    "RingingTimerSeconds": 130,
    "RegistrationExpirationSeconds": 7200
  },
  "XCAP": {
    "supported": false
  },
  "ConferenceCalling": {
    "AlwaysSubscribeToConferenceEvents": true,
    "TreatAllNotificationsAsPartial": true,
    "SendConferenceSubscribeInNewDialog": true,
    "conferenceServer": "mmtel@conf-factory.ims.mnc001.mcc427.3gppnetwork.org"
  },
  "SMS": {
    "enableInNonVoLTEMode": false,
    "allowCSFBInVolteMode": true
  },
  "Voice": {
    "EnableVolteByDefault": true
  }
}