Quick Disconnect RJ9 Headset for Professional Jobs Works RJ9 Modular Headset Jack Make sure if your Phone has a RJ9 Modular type Headset Jack before purchase. For Pin Type (called 2.5mm) Jack, Refer to the headset below chart Bundle Package Package includes A Headset, built Quick Disconnect A Quick Disconnet Phone Adapter to RJ9 Headset Jack of a Desk Phone Quick Disconnet Benefit The QD connection, essential connector for professional headsets, also enables you to place a call on hold by simply disconnecting the headset at the QD during a call. It enables you to walk away from the telephone without having to remove the headset 8 selectable Smart Cord compatible with Most Desk Phones Audio processor cords make it possible to connect virtually any desk phone Even though the headset and desk phone may be plug-compatible, the wiring is determined by the individual telephone manufacturerCisco, Polycom and Avaya have different wiring so need different cord.Eliminates the need for multiple cords for connecting to different phone systems Microphone Volume Boost - Mic amplifier on switch positions 6 through 8 boosts signal gain by approximately 12 dB(Double). Selectable switch RJ9 Headset Compatible with Polycom, Cisco, Avaya, NEC ,Toshiba, Mitel,Aastra,Shortel, Allworks,3Com Gigaset,Zultys Comdial,,ESI,Fotinet,Digium and most IP phones with RJ9 Phone jack. NOT Computer/Smartphone. At a noisy call center or office, INNOTALK Changer Pro headset with office phones or VoIP phones is the great choice. Noisy reduction of microphone to decrease background noise delivers clear, noise-free conversation.Flexible microphone boom arm by Elastomer Sheathed metal spring pipe for optimal positioning from the mouth optimizes sound, so your callers will hear conversations more clearly. Wideband frequency receiver with Noise reduction for a high quality hearing sound is the best for at a call center or noisy office.The included virtual RJ9 cord has an 8-Position selector switch, providing compatibility to work with most phones. Plus, Like the GN1200 smart code, switch positions 6 to 8 can double loud your voice to the other side.The INNOTALK headband-style headset frees up your hands while multi-tasking as searching reference documents or managing a computer can be more productive as it’s comfortable enough to wear all day.Acoustic shock protection receiver Binaural Headset Monaural Headset RJ9 Innotalk Classic Headset RJ9 Innotalk Supersonic Headset Innotalk ChangeProV RJ9 Headset Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.1 out of 5 stars 6 — 4.5 out of 5 stars 5 3.1 out of 5 stars 6 3.1 out of 5 stars 6 Price $69.00$69.00 $65.00$65.00 $52.00$52.00 $74.00$74.00 $69.00$69.00 Jack Type RJ9 RJ9 RJ9 RJ9 RJ9 Speaker Both Single Both Both Both Noise Cancel Mic ✓ ✓ ✓ ✓ Clear Voice