{
  "Signaling": {
    "AllowedPdpTypeMask": 1,
    "preconditions": "Supported",
    "AdditionalContactParams": {
      "REGISTER,INVITE,INVITE:*": "+g.3gpp.mid-call;+g.3gpp.srvcc-alerting;+g.3gpp.ps2cs-srvcc-orig-pre-alerting"
    },
    "AlwaysAddSipInstance": true,
    "maxUdpMessageSize": 1500,
    "ForbiddenRegistrationErrorCodes": "-4XX",
    "ContactUser": "IMSI",
    "OutgoingDomain": "1",
    "inviteErrorResponsesToTriggerCSFB": "3XX,4XX,5XX,6XX",
    "useIPSec": false,
    "alwaysSendSessionProgress": true,
    "triggerCSFBOnSDPError": true,
    "earlyMediaNeedsHeader": true,
    "registrationRetryIntervals": "30,60+15,120,480,900,1800",
    "IncomingCallEndReasons": {
      "CallToVoicemail": {
        "TerminationEvent": "RemoteRequestCanceled",
        "StatusCode": 408,
        "ReasonHeaderText": "CC_TERM_NOREPLY_TMR_EXPIRED"
      }
    },
    "MaxForbiddenErrors": "100",
    "ringingTimer": 90,
    "ringbackTimer": 90,
    "allowResponsesOverDifferentTransport": false,
    "supportPEarlyMediaHeader": true
  },
  "ConferenceCalling": {
    "conferenceServer": "sip:mmtel@conf-factory.ims.mnc002.mcc250.3gppnetwork.org",
    "sendConferenceSubscribeInNewDialog": true,
    "TreatAllNotificationsAsPartial": true
  },
  "Media": {
    "MaxRed": 220,
    "includeSDPModeChangeCapability": true,
    "RingbackTone": "CEPT",
    "UseSDPTemplateWhenAnswering": true,
    "IncludeSDPMaxRed": true,
    "enableBandwidthSpecifiers": true
  }
}