The solution is here - Headset Adapter for your telephone.

So, how does it work? Headset Adapter plug allows use of standard PBX/ACD headset with modular telephones. PBX headsets equipped with the standard PJ327 dual brass plug may now plug into telephone consoles with 4X4 jack.

Westek brings us another delightfully innovative headset adapter to extend the functionality and provide more stability and the same range (or greater) than the any other headset adapter. However, buying the latest product always such a gamble, never mind the fact that they are quick to become obsolete, but primary think of the idea to invest in a product that you genuinely need and that you can use for the long haul.

Westek Electronics, Inc., is a leading provider of telecommunications cords, cable and test assemblies that introduce new Laptop Kit that allows technicians to quickly and easily interface with multiple types of test equipment while in the field or central office.