Aastra Telecom 57I CT User Manual
IP Phone Models
RN-001029-00, Release 2.0.2, Rev 02
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SIP IP Phone Models 53i, 55i, 57i, 57i CT Release Notes
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.
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.