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9GHz frequency for clear
The Polycom SoundStation DUO is a dual mode conference phone that can be used as either a deployable SIP conference phone or an analog PSTN unit
8622 Features:
TLP transmit input range of -3
making it ideal for converged voice and data networks
ESI 55D Digital Business Phone (5000-0736) Phone Systems 9GHz frequency for clearESI 55D Digital Phone (5000 0736) Description: The 55D is a digital phone designed for the ESI IP 900 and Communication Servers. The ESI 55D 5000 0736 features thirty programmable buttons, a voicemail button, full duplex speakerphone, integrated headset jack, and a three lined backlit display. The ESI 55 series is the next generation upgraded from the DFP and IPFP series. ESI 5000 0736 Features: Network: Digital 30 Programmable Buttons Voicemail
