ISDN Protocol Tester from Germany
Tests ISDN layer 1-3 protocols for digital telephony networks. Telecom-specific under HTS 9030.40.00.00.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Reference ANSI T1.601 standards