The Avaya Partner, Partner Plus and Partner II Telephone Systems have been discontinued but are still widely in use throughout the world. Many of the modules and parts from these lines can still be used in the current Avaya ACS systems and the phones are also compatible. The differences in these systems and the new ACS systems are features available. If you read closley you will understand the system differences.

Partner, Partner Plus & Partner II--Discontinued Systems

Partner (Baby Partner) Systems-Discontinued Partner Plus Systems-Discontinued Partner II Systems-Discontinued Expansion Modules-Discontinued Accessories-Discontinued Partner Telephones-Discontinued Cordless Phones-Discontinued