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AVAYA Legacy Small Business Telephone Systems

Partner PhonesFull Spectrum Systems can help you with your legacy AVAYA systems such as the AVAYA / Lucent / AT&T Partner ACS, AVAYA Merlin Magix, Lucent Legend, AT&T Spirit, AT&T / Lucent 820, and many others. We have personally worked with these systems for more than 20 years and have the knowledge, expertise, and parts to repair, maintain, and program your equipment for years to come.



Nortel Legacy Small Business Telephone Systems

We are one of the few contractors in the area who still provide programming and repair assistance on several of the Nortel telephone systems inlcuding the MICS, 824, CICS, NAM, Flash, Call Pilot, and others.

Nortel Phones



Looking for a Refurbished Small Business Telephone System?

Full Spectrum Systems has many legacy telephone systems available for purchase at competitive prices. We are especially proud to provide entire Partner ACS telephone systems including everything you need to keep your business communications running for many years down the road. We offer 90 day warranties on most refurbished products and also provide training and user / administration manuals.



Engenius Long Range Cordless Systems

Looking for a long-range cordless telephone solution? Try the Engenius Durafon. Up to 250,000 sq. ft of coverage, up to 3000 acres in open range, up to 12 floors in multi-story buildings. Phones can be connected to any analog line or analog PBX port. Multiple handsets can be assigned to a single base. Handsets are built with a durable rubber housing and rated for industrial use.

Engenius Durafon Brochure.pdf file


We carry high-end conferencing equipment as well as a full line of headsets. We also carry lightning / surge protection, battery backup systems, and a full line of Plantronics headsets.