We specialize in used & refurbished business phones for existing phone systems

Partner Phone Equipment

Business Telephone Sales sells Avaya Partner Phone equiment at the lowest prices. We help you maintain your older phone system without having to deal with an expensive upgrade.  Business Telephone Sales sells the Partner Plus, Partner II, and Partner ACS phone systems, replacement phones such as the Partner 18D and MLS12D, as well as phone labels and handsets.  

Avaya used to be known originally as AT&T and then it was bought out by Lucent.  Your Partner phone system may have all three logos on different pieces.  For example, the processor could be an Avaya ACS processor with an AT&T 206e card attached to it.  The label on the Partner 6 phone could say Euro 6 or just Partner 6.  Most Partner phones will work on any of the Partner Plus, Partner II, and Partner ACS phone systems. You can mix and match the AT&T MLS12 phones on the same system you have the Avaya Partner 18D Series 2 phones.  If you have questions on compatibility please call us at 800-396-9699.

Avaya Partner 18D phone

12480 12754 12834 14003

Avaya Partner 6 Phone

12483 12763

Avaya Partner 18 Phone


Avaya Partner 34D Series 2 Phone

12868 12903 12904

Avaya Partner 18D Series II Phone


Avaya Partner 34D Phone

12482 12782

Avaya Partner Euro handset


Avaya Partner Euro Series II Handset


Avaya Partner MLS-12 Phone

12492 12755 12776

Avaya Partner MLS-12D Phone

12493 12756 12777

Avaya Partner MLS-18D Phone

12494 12757 12778

Avaya Partner MLS-34D Phone

12496 12758

Avaya Partner MLS Handset


Avaya Partner VS 5.0 Voicemail


Avaya Partner ACS Processor 6.0


Avaya Partner ACS 308EC 3.0


Avaya Partner ACS Phone System

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