The Netcom 8800 01 Headset Adapter from GN Jabra offers good sound quality  comfort  durability  and selection. This quick-disconnect cord with modular plug lets you plug-in the LB 2100 headsets directly into your phone without the need of an amplifier. This cord is designed for use with telephone systems such as Mitel  NEC  Nortel  Lucent and Siemens. With all these features and more  it is ideal for you.