{
  "version": "1.0",
  "thresholds": {
    "supported": 70,
    "likely": 40
  },
  "missing_critical_penalty": 20,
  "hard_negative_penalty": 40,
  "hard_negative_patterns": [
    "voiceoverps[^\\n\\r]*notsupported",
    "voice-over-ps[^\\n\\r]*notsupported",
    "srvcc[^\\n\\r]*notsupported"
  ],
  "critical_signals": [
    {
      "name": "ims",
      "patterns": ["ims-parameters", "ims-support"]
    },
    {
      "name": "voice_over_ps",
      "patterns": ["voiceoverps", "voice-over-ps", "vops"]
    },
    {
      "name": "srvcc",
      "patterns": ["\\bsrvcc\\b"]
    }
  ],
  "rules": [
    {
      "rule_id": "explicit_ims_voice_over_ps",
      "category": "explicit_positive",
      "weight": 50,
      "patterns": ["voiceoverps[^\\n\\r]*\\bsupported\\b", "voice-over-ps[^\\n\\r]*\\bsupported\\b", "vops[^\\n\\r]*\\bsupported\\b"],
      "description": "Explicit voice over PS support indicator."
    },
    {
      "rule_id": "explicit_srvcc_indicator",
      "category": "explicit_positive",
      "weight": 30,
      "patterns": ["srvcc[^\\n\\r]*\\bsupported\\b"],
      "description": "Explicit SRVCC support indicator."
    },
    {
      "rule_id": "explicit_ims_indicator",
      "category": "implicit_positive",
      "weight": 10,
      "patterns": ["ims-parameters", "ims-support"],
      "description": "IMS context present but without explicit voice support state."
    },
    {
      "rule_id": "implicit_interrat_utra",
      "category": "implicit_positive",
      "weight": 15,
      "patterns": ["supportedbandlistutra-fdd", "e-redirectionutra"],
      "description": "Inter-RAT UTRA capabilities useful for voice fallback scenarios."
    },
    {
      "rule_id": "implicit_interrat_geran",
      "category": "implicit_positive",
      "weight": 10,
      "patterns": ["supportedbandlistgeran", "e-redirectiongeran"],
      "description": "Inter-RAT GERAN capabilities useful for fallback scenarios."
    },
    {
      "rule_id": "implicit_release_rel9plus",
      "category": "implicit_positive",
      "weight": 10,
      "patterns": ["accessstratumrelease=rel(9|1[0-9])"],
      "description": "Access stratum release at least Rel-9."
    }
  ]
}