Fanvil T-03 Line Sequence Converter Plug and Play From Q01 to Q03

The Fanvil T-03 Line Sequence Converter is a passive, plug-and-play accessory designed to bridge headset compatibility between Q01 and Q03 line-sequence wiring standards. By converting the pin sequence from Q01 to Q03, it enables Fanvil IP phones to work seamlessly with Q03 line-sequence headsets without any configuration, software, or additional hardware. Its compact form factor and straightforward RJ9-to-RJ9 construction make it an efficient solution for IT administrators and office deployments where headset interoperability is a recurring challenge.

Key features & benefits

• Plug-and-Play Deployment — Requires no drivers, software, or configuration. Simply connect the converter between the IP phone and the headset to immediately resolve line-sequence mismatches.
• Q01 to Q03 Line Sequence Conversion — Rewires the signal path from Q01 to Q03 pin order, expanding the range of compatible headsets that can be used with Fanvil IP phones.
• RJ9 (4P4C) Interface on Both Ends — Features a standard RJ9 socket on one end and an RJ9 plug on the other, fitting directly into existing headset ports without adapters or tools.
• Flexible Cable Length — A 150 mm (±30 mm) cable provides just enough reach to route cleanly at the handset port without creating desk clutter.
• Broad Environmental Tolerance — Rated for operating temperatures of 0–45 °C and humidity levels of 20–85%, suitable for typical office and light-industrial environments.