ISDN Protocol Tester from Japan
Tests ISDN layer 1-3 protocols for digital telephony networks. Telecom-specific under HTS 9030.40.00.00.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Reference ANSI T1.601 standards