EHS for Polycom APP-51 IP Phones320*, 330*, 321*, 331*, 335, 430, 450, 550, 560, 650, 670,:
An EHS cable will allow remote answer or hang up with your Polycom Unified IP phone.
It is compatible with the following Polycom Unified IP Phone models: 320, 330, 430, 550, 560, 650, 670.
With the EHS cable, no handset lifter is required. Answer/end your phone call up to 350 ft away.
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