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The ESI 55 5000-0737 is a VoIP phone designed for the ESI CS 50 and 50L, CS100, CS200, CS600, CS1000, and IP 900 servers. The ESI IP 55, part number 5000-0737, has 30 programmable buttons, a backlit display, full duplex speakerphone, and headset jack. The ESI 55 is the upgraded version of the IPFP model phones.
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The ESI Digital Cordless II is a DECT 6.0 cordless phone that features eight programmable buttons, a backlit display, speakerphone, headset jack and more. The ESI 5000-0526 Digital Cordless 2 is supported on the ESI IP Server 900 as well as ESI CS servers.
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The ESI SIP 8 Card is designed for the ESI Communications Servers and offers eight SIP trunk ports. The ESI 5000-0550 Card features dual LAN ports for connectivity as well as a single USB port for configuration.