Avaya Plug Base Amplifier - Headset Dual Prong Adapter for AT&T Definity Telephones

• Adjusts strong and weak calls to a comfortable level
• Reduces background noise heard by your caller
• One Touch Operation: Available for the following Avaya Definity Model Numbers.
• Attendant Console A,B
• Attendant Console C
• Callmaster I, II, III, IV
• Com. Code#: 406445601
• Plantronics Part#: 49348-01