Aastra Telecom 55I, 57I CT IP Phone Models, IP phone family - benefits without the compromise

SIP IP Phone Models 53i, 55i, 57i, 57i CT Release Notes

IP Phone Models

IP Phone Models

The IP Phone Models 53i, 55i, 57i, and 57i CT are multi-line open-standards desktop phones that communicate over an IP network allowing you to receive and place calls in the same manner as a regular business telephone.

The Aastra 53i is designed for use by the occasional users to the power users. The Aastra 55i is designed for the power users and executives who require a graphical display for advanced XML applications. The Aastra 57i is designed for the power users and executives who require a large graphical display for advanced XML applications. The Aastra 57i CT is designed for the power users, executives, and warehouse, support, and retail staff who require mobility within a single site facility. It includes an integrated WDCT cordless mobility handset for coverage of up to 300,000 square feet.

Built on Aastra’s global form factor, the 5i Series IP phones maintain the same quality and features that you are accustomed to with our existing

IP phone family - benefits without the compromise.

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