Get your proprietary business telephones from The Telecom Spot's broad lines of manufacturers available and be assured you're getting the best service, product and expertise. Top branded phones including ones from Avaya, Aksys, Cisco, NEC, Nortel, TalkSwitch / Fortinet, XBlue, MS Lync optimized phones and more! Proprietary system phones are telephones that will only work with a specific telephone system.