{
  "Signaling": {
    "IgnoreRegNotificationContactExpires": true,
    "AllowedPdpTypeMask": 3,
    "AdditionalContactParams": {
      "REGISTER,INVITE,INVITE:*": "+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting"
    },
    "maxUdpMessageSize": 5000,
    "alwaysAddPrivacyHeader": true,
    "strictCallFlows": true,
    "AdditionalHeaders": {
      "INVITE,INVITE:*": "Feature-Caps: *;+g.3gpp.srvcc-alerting"
    },
    "AlwaysUnsubscribeFromRegEvents": false,
    "registrationExpiration": 7200,
    "InviteErrorResponsesToTriggerCSFB": "3XX,5XX,6XX",
    "TriggerCSFBOnWaitForRingingTimeout": true,
    "WaitForRingingTimerMO": 21,
    "TriggerCSFBOnSdpError": true,
    "DropRegistrationOnSRVCC": true,
    "AlwaysSendSessionProgress": true,
    "useIPSec": false,
    "earlyMediaNeedsHeader": true,
    "defaultAuthAlgorithm": "AKAv1-MD5",
    "forceTcp": false,
    "Preconditions": "Supported",
    "inviteResponseTimeout": 10000,
    "ringbackTimer": 130,
    "WaitForRingingTimerMT": 21,
    "ringingTimer": 130,
    "subscriptionTerminatedMeansRegistrationTerminated": true,
    "supportPEarlyMediaHeader": true
  },
  "ConferenceCalling": {
    "conferenceServer": "mmtel@conf-factory.ims.mnc001.mcc427.3gppnetwork.org",
    "SendConferenceSubscribeInNewDialog": true,
    "TreatAllNotificationsAsPartial": true,
    "AlwaysSubscribeToConferenceEvents": true
  },
  "SMS": {
    "allowCSFBInVolteMode": true
  },
  "Media": {
    "includeSDPModeChangeCapability": true,
    "EnforceEarlyMediaDirection": true,
    "inactivityTimerRTPRTCP": 15,
    "RingbackTone": "CEPT",
    "UseSDPTemplateWhenAnswering": true,
    "enableBandwidthSpecifiers": true
  }
}