{
  "Signaling": {
    "PreferredSenderIdentity": "from",
    "UseOutgoingSipUri": false,
    "InviteErrorResponsesToTriggerCSFB": "3XX,4XX,5XX,6XX",
    "SecurityAgreementAlgs": "",
    "SupportPEarlyMediaHeader": true,
    "RingbackTimerSeconds": 35,
    "RingingTimerSeconds": 35,
    "EarlyMediaNeedsHeader": true,
    "AlwaysSendSessionProgress": true,
    "TriggerCSFBOnSDPError": true,
    "Preconditions": "Supported",
    "RegistrationExpirationSeconds": 3600,
    "SessionExpiresSeconds": 1800,
    "AdditionalContactParams": {
      "REGISTER,INVITE,INVITE:*": "+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting"
    },
    "TriggerCSFBOnWaitForRingingTimeout": true,
    "UseFakeSAsForDeregistration": true,
    "UseIPSec": true
  },
  "ConferenceCalling": {
    "conferenceServer": "sip:mmtel@conf-factory.ims.mnc00.mcc740.3gppnetwork.org",
    "SendConferenceSubscribeInNewDialog": true
  },
  "Media": {
    "EnableBandwidthSpecifiers": true,
    "InactivityTimerRTCPSeconds": 36000,
    "RingbackTone": "ANSI",
    "UseSDPTemplateWhenAnswering": true,
    "UseSDPTemplateForAllInvites": false,
    "IncludeSDPModeChangeCapability": true
  },
  "Voice": {
    "EnableVolteByDefault": true
  }
}