Call Center headset compatible with Cisco SPA phones 2.5mm Quick Disconnect bottom cord included Come with 2.5mm Quick Disconnect cord for Cisco SPA phone models. RF-Shield coiled Quick Disconnect cord with RJ9 connector. Cord Length: 29 inches, stretchable Length: 72 inches. Plus the 34 inches upper cord, total stretchable cord Length: 104 inches. *** 2.5mm connector connects the headset to any desktop phones, cordless phones. But CAN NOT connect to Smartphones and computers! OvisLink Dual Ear Call Center headset works with Cisco SPA phones Compatible with Cisco Small Business SPA phone series support headset function Compatible with Cisco models: SPA303, SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2 HD voice quality and natural human voice phone conversation when use with compatible Cisco Small Business SPA phone models. Lightweight and comfortable. Noise-Canceling microphone Built-in Acoustic Shock Protection, to prevent electric overload RF-Shield, Tangle Free headset cord Rotatable gooseneck microphone boom Connect OvisLink headset to Cisco SPA phone 2.5mm headset jack Cisco Small Business SPA303, SPA501G, SPA502G, SPA504G, SPA508G, SPA509G, SPA512G, SPA514G, SPA525G, SPA525G2 have 2.5mm headset jack at the low right hand side of the phone. Use the 2.5mm Quick Disconnect cord connect OvisLink headset to these Cisco phone models. Make sure the headset connector is all the way into the headset jack. Quick Disconnect at the middle of the headset cord Quick Disconnect function gives user convenience to disconnect and reconnect the headset from the phone easy and fast. While the connector is disconnected, there will be no audio on the headset, but call will not disconnect. User may plug it back to continue the phone conversation. Gooseneck microphone boom With rotatable gooseneck microphone boom, user may fix the microphone at any spot that user feel comfortable and have perfect microphone volume. Press headset key on Cisco SPA phone keypad to use OvisLink headset Press headset key on Cisco SPA phone keypad to use the OvisLink headset connected to the phone. Press the "+" and "-" keys to adjust the headset's volume. Wireless Call Center Headset Compatible with Polycom VVX600 Dual Ear Wireless Call Center headset compatible with Grandstream phones Single Ear Call Center Headset for Polycom Phones Single / Dual Ear Interchangeable Headset Compatible with Polycom Phones Single Call Center Headset Compatible with Polycom Phones Call Center Headset Compatible with Polycom Phones Buying Options Buying Options Buying Options Add to Cart Add to Cart Add to Cart Customer Reviews 2.9 out of 5 stars 6 — — — 3.4 out of 5 stars 6 4.1 out of 5 stars 14 Price — no data — no data — no data $79.95$79.95 $69.95$69.95 $56.95$56.95 Connection Wireless Wireless Corded: RJ9 2.5mm Corded: RJ9 and 2.5mm Corded: RJ9 Corded: 2.5mm Connection Range Up to 30 ft Up to 30 ft Stretchable cord Length: 104 inches Stretchable cord Length: 104 inches Stretchable cord Length: 104 inches Stretchable cord Length: 104 inches Compatible Cisco Phone Models Cisco 8841, 8845, 8851, 8861, 8865, Wireless IP Phone 8821 and SPA 525G2 Cisco 8841, 8845, 8851, 8861, 8865, Wireless IP Phone 8821 and SPA 525G2 All Cisco desktop phones support headset function All Cisco desktop phones support headset function Cisco Unified Series Desktop phones Cisco SPA phone models have 2.5mm headset jack located at low right hand side of the phone Speaker One speaker Speaker on user both ears Speaker on user both ears One speaker Speaker on user both ears One speaker Ear Cushion Soft, leatherette ear cushion Soft, leatherette ear cushion Soft, leatherette ear cushion Super smooth silicone ear cushion Soft, leatherette ear cushion Soft, leatherette ear cushion Rotatable Microphone ✓ ✓ ✓ ✓ ✓ ✓ Noise Canceling ✓ ✓ ✓ ✓ ✓ ✓ Battery Built-in rechargeable battery Built-in rechargeable battery Don't need battery Don't need battery Don't need battery Don't need battery