RJ9 4P4C Female to 3.5mm Male Headset Adapter Cable for Cisco & Avaya Phones

This RJ9 (4P4C) female to 3.5mm male headset adapter cable allows compatible RJ9/RJ10/RJ22 telephone headsets to be used with devices that feature a standard 3.5mm headphone jack. It is commonly used in office and call-centre environments to adapt Cisco and Avaya telephone headsets for use with smartphones, softphones, laptops, or audio equipment that support a 3.5mm TRRS input.

The adapter provides a simple and reliable way to bridge legacy telephony headsets with modern devices, making it ideal for VoIP, call handling, and professional communication setups.

Please note: this adapter is not compatible with RJ11 ports and will not work with integrated 2-in-1 smartphone headsets.

Key features:

• RJ9 (4P4C) female to 3.5mm male adapter cable

• Converts compatible RJ9/RJ10/RJ22 headsets to 3.5mm devices

• Suitable for Cisco, Avaya, and other VoIP telephone headsets

• Compact and lightweight design for office and mobile use

• Durable cable construction for everyday professional use

Compatibility:

• Works with many Cisco and Avaya telephone headsets using RJ9/RJ10/RJ22

• Compatible with devices that support 3.5mm headset input

• Not compatible with RJ11 ports

• Not suitable for single-jack smartphone headsets with inline controls