Plantronics CS540 Wireless Headset Speaker the SIP-based Cisco SPA504G 4-Line

the SIP-based Cisco SPA504G 4-Line IP Phone has been tested to ensure comprehensive interoperability with equipment from voice over IP (VoIP) infrastructure leaders

0 technology to improve downlink performance to all mobile devices including one-

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The supported speeds are 100 Mbps

Plantronics CS540 Wireless Headset Speaker the SIP-based Cisco SPA504G 4-LinePlantronics CS540 Wireless Headset Refurbished with a 1 Year Warranty Note: These units do NOT work with a computer or USB. Lightweight and versatilefor any office or contact center Business grade headsetweighing only 21 grams Distance to cover most offices with 350 feet of range 7 hours of talk time to get you through the busiest days Over the Ear & Over the Head wearing styles included