Rotary Telephone Converter Pulse DTMF RJ11 VOIP Fiber GSM SIP PBX

Give your old rotary phone new life without modifying it.

This converter automatically transforms the pulse dialing of vintage telephones into the modern DTMF (Dual Tone Multi Frequency) signal, allowing vintage telephones to be used with current telephone networks, switchboards, fiber modems, VOIP adapters and GSM converters.

It's the ideal solution for continuing to use historic Italian, European, American, and Japanese telephones even where pulse dialing is no longer supported by telephone operators.

Main features

• Automatically converts pulse dialing to DTMF tones.
• Compatible with European, American and Japanese rotary phones.
• Tested with the famous Italian SIP Grey Telephone (see photo).
• Compatible with traditional telephone lines, fiber modems, VOIP adapters, telephone switchboards and GSM gateways.
• It also supports the * and # keys, essential for automatic services and voice switchboards.
• Last number redial function.
• Standard RJ11 telephone output.
• Self-powered directly from the telephone line, no external power supply required.
• Completely transparent during the conversation: it intervenes only while the number is being dialed.
• Quick and easy installation without modifying the original phone.

Installation

Installation takes just a few minutes. Simply connect the two telephone wires to the converter's terminals and insert the RJ11 connector into the telephone line. There's no need to modify or alter the original telephone.

Once connected, the converter automatically detects the pulses generated by the dial and converts them into the corresponding DTMF tones, allowing dialing on modern telephone networks.

Compatibility

• Vintage rotary phones.
• Italian SIP Gray Phones.
• European, American and Japanese phones.
• Analog telephone lines.
• Telephone switchboards.
• VOIP adapters.
• Fiber Modem.
• GSM Gateway.
• Modern telephone systems that support DTMF dialing exclusively.

Technical specifications

• Pulse → DTMF conversion.
• RJ11 interface.
• Power supply directly from the telephone line.
• No external power required.
• Supports * , # and redial functions.
• International compatibility.
• Plug & Play installation.

Thanks to this converter, you can continue to use your old phone every day while maintaining its original functionality, without permanent modifications and with full compatibility with modern telephone infrastructures.