HW251N/HW261N Troubleshooting: Low receive (listening) volume
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The receive volume is low on a Plantronics HW261N/HW251N headset when used with Avaya 96X1 (9621,9641,9611) or 9608 phone with H323 6.1 SP1 firmware. What is the issue?
Avaya has confirmed that this is a phone firmware defect. Avaya has addressed this issue in their latest firmware release H.323 6.2. This fix has been verified by Plantronics.