Product Catalog: Commercial Systems & Solutions: Avaya Telephone Solutions Categories IP Office System The Avaya IP Office is an intelligent communications solution specially designed to meet the communications challenges facing small and midsized businesses. PARTNER Telephone System The PARTNER telephones are perfect for price-sensitive customers that want to take full advantage of PARTNER's comprehensive feature set. Quick Edition System This simple yet sophisticated phone system is designed for small businesses or small branch offices of enterprises looking for big business communication capabilities.