Plantronics M22 Advanced Amplifier Supports VoIP and Wideband for Desk Phone

• Compatible with virtually all single or multi-line professional desk phones
• Separate controls enable independent adjustment of incoming and outgoing volume
• Clearline Audio echnology includes startle protection, incoming call leveling, echo control,incoming noise reductionand background noise reduction
• Receive and transmit bandwidth supports TIA-920 voice bandwidth (150Hz to 6800Hz, up from 300Hz to 3400Hz with traditional telephony)
• Keep incoming sounds at a consistent listening level: fax tones and loud calls will be reduced to your chosen preset incoming audio level
• Quick disconnect between the headset and this amplifier allows you to snap the cords apart without having to remove your headset or disconnect your call
• Ergonomically designed buttons and dials – rotary volume control, headset/handset switch, locking mute button
• Echo management feature reduces echo on VoIP telephone systems
• Utilizes wideband technology for phone systems that are wideband enabled
• If your phone is not wideband the M22 amplifier will still sound great
• M22 replaced the M12 and and has supportswideband (must be wideband end to end)
• M22 buttons are light putty color (M12 buttons were purple) and M22 is light gray compared to the dark gray of the discontinued M12
• Backwards compatible with all phones the M12 was compatible with, and works with traditional phone lines as well as wideband for “future proofing”
• Comes with modular pigtail cord (in back) and 10 foot modular coil cord (front) that has Plantronics Quick Disconnect (QD) for connecting to Plantronics headset tops
• If you would like to use an M22 on a Cisco 7900 phone in the headset port you will also need a 85638-02 adapter
• 2 year Plantronics manufacturer’s warranty