{"L1_core": {"type": "cat7", "domain": "networking", "category": "cable", "subcategory": "twisted_pair"}, "L4_features": ["individual_pair_shielding", "gg45_tera_connector", "high_emi_immunity"], "L3_standards": ["ISO/IEC 11801 Class F"], "L2_performance": {"awg": 23, "pairs": 4, "shielding": "S/FTP", "speed_gbps": 10, "frequency_mhz": 600, "max_distance_m": 100}}